Sleep and physical activity:a mixed method study in people with chronic pain

This thesis investigates how people make judgements of their sleep quality and thetemporal association between sleep and physical activity in people with and withoutchronic pain. In doing so, the thesis used a multi-methodological approach comprisingqualitative (Chapter 3), experimental (Chapter 4)...

Full description

Saved in:
Bibliographic Details
Main Author: Fatanah Ramlee
Format: thesis
Language:eng
Published: 2017
Subjects:
Online Access:https://ir.upsi.edu.my/detailsg.php?det=5250
Tags: Add Tag
No Tags, Be the first to tag this record!
id oai:ir.upsi.edu.my:5250
record_format uketd_dc
institution Universiti Pendidikan Sultan Idris
collection UPSI Digital Repository
language eng
topic QP Physiology
spellingShingle QP Physiology
Fatanah Ramlee
Sleep and physical activity:a mixed method study in people with chronic pain
description This thesis investigates how people make judgements of their sleep quality and thetemporal association between sleep and physical activity in people with and withoutchronic pain. In doing so, the thesis used a multi-methodological approach comprisingqualitative (Chapter 3), experimental (Chapter 4) and daily process studies (Chapters 5and 6). The qualitative study presented in Chapter 3 explored how people with andwithout chronic pain define their sleep quality and to what extent judgments of sleepquality differ with the presence of pain (n= 17). The experimental study presented inChapter 4 quantitatively examined the relative importance of 17 parameters of sleepquality in good and poor sleepers (n= 100). This study conceptualised sleep quality as adecision-making process and used a choice-based conjoint analysis to identifyparameters that shape people's judgement of sleep quality. Then the thesis shifts itsfocus to the relationship between sleep and physical activity in Chapters 5 and 6. Usingself-reported measures, the daily process study presented in Chapter 5 investigated thetemporal within-person association between sleep and physical activity in healthy youngadults (n= 118). Using both self-reported and objective measures of sleep and physicalactivity, a follow-up daily process study was conducted in people with chronic pain (n=51, Chapter 6). In addition, the study presented in Chapter 6 also explored the roles ofpain and other psychological variables (e.g., mood) that may interact with sleep to affectthe regulation of physical activity. The results across studies converge to suggest thatsleep quality judgement is a retrospective decision-making process dependent on bothdaytime and nighttime processes and that subsequently influence daytime functioningsuch as physical activity and mood in chronic pain patients. Therefore, futureinvestigations and interventions should consider the possibility of broadening the focusto addressing chronic pain patient's perception of sleep quality and the impact of poorsleep on daytime processes, for improving sleep quality, engagement in physical activityand the overall quality of life.
format thesis
qualification_name
qualification_level Doctorate
author Fatanah Ramlee
author_facet Fatanah Ramlee
author_sort Fatanah Ramlee
title Sleep and physical activity:a mixed method study in people with chronic pain
title_short Sleep and physical activity:a mixed method study in people with chronic pain
title_full Sleep and physical activity:a mixed method study in people with chronic pain
title_fullStr Sleep and physical activity:a mixed method study in people with chronic pain
title_full_unstemmed Sleep and physical activity:a mixed method study in people with chronic pain
title_sort sleep and physical activity:a mixed method study in people with chronic pain
granting_institution Universiti Pendidikan Sultan Idris
granting_department Fakulti Pembangunan Manusia
publishDate 2017
url https://ir.upsi.edu.my/detailsg.php?det=5250
_version_ 1747833175836459008
spelling oai:ir.upsi.edu.my:52502020-09-22 Sleep and physical activity:a mixed method study in people with chronic pain 2017 Fatanah Ramlee QP Physiology This thesis investigates how people make judgements of their sleep quality and thetemporal association between sleep and physical activity in people with and withoutchronic pain. In doing so, the thesis used a multi-methodological approach comprisingqualitative (Chapter 3), experimental (Chapter 4) and daily process studies (Chapters 5and 6). The qualitative study presented in Chapter 3 explored how people with andwithout chronic pain define their sleep quality and to what extent judgments of sleepquality differ with the presence of pain (n= 17). The experimental study presented inChapter 4 quantitatively examined the relative importance of 17 parameters of sleepquality in good and poor sleepers (n= 100). This study conceptualised sleep quality as adecision-making process and used a choice-based conjoint analysis to identifyparameters that shape people's judgement of sleep quality. Then the thesis shifts itsfocus to the relationship between sleep and physical activity in Chapters 5 and 6. Usingself-reported measures, the daily process study presented in Chapter 5 investigated thetemporal within-person association between sleep and physical activity in healthy youngadults (n= 118). Using both self-reported and objective measures of sleep and physicalactivity, a follow-up daily process study was conducted in people with chronic pain (n=51, Chapter 6). In addition, the study presented in Chapter 6 also explored the roles ofpain and other psychological variables (e.g., mood) that may interact with sleep to affectthe regulation of physical activity. The results across studies converge to suggest thatsleep quality judgement is a retrospective decision-making process dependent on bothdaytime and nighttime processes and that subsequently influence daytime functioningsuch as physical activity and mood in chronic pain patients. Therefore, futureinvestigations and interventions should consider the possibility of broadening the focusto addressing chronic pain patient's perception of sleep quality and the impact of poorsleep on daytime processes, for improving sleep quality, engagement in physical activityand the overall quality of life. 2017 thesis https://ir.upsi.edu.my/detailsg.php?det=5250 https://ir.upsi.edu.my/detailsg.php?det=5250 text eng closedAccess Doctoral Universiti Pendidikan Sultan Idris Fakulti Pembangunan Manusia Achermann, P. (2004). The two-process model of sleep regulation revisited. Aviation, Space andEnvironmental Medicine, 75(3), A37-A43.Adam, K., & Oswald, I. (1984). Sleep helps healing. British Medical Journal, 289(6456), 1400-1401.Affleck, G., Urrows, S., Tennen, H., Higgins, P., & Abeles, M. (1996). Sequential daily relationsof sleep, pain intensity, and attention to pain among women with fibromyalgia. Pain, 68(2),363-368.Affleck, G., Zautra, A., Tennen, H., & Armeli, S. (1999). Multilevel daily process designs forconsulting and clinical psychology: a preface for the perplexed. Journal of Consulting and ClinicalPsychology, 67(5), 746-754.Afolalu, E. F., Moore, C., Ramlee, F., Goodchild, C. E., & Tang, N. K. Y. (2016).Development of the pain-related beliefs and attitudes about sleep (PBAS) scale for the assessmentand treatment of insomnia comorbid with chronic pain. Journal of Clinical Sleep Medicine, 12(9),1269-1277.Akerstedt, T., Hume, K., Minors, D., & Waterhouse, J. (1994). The meaning of goodsleep: a longitudinal study of polysomnography and subjective sleep quality.Journal of Sleep Research, 3, 152-158.Akerstedt, T., Hume, K., Minors, D., & Waterhouse, J. (1994). The subjective meaning of good sleep,an intraindovidual approach using the karolinska sleep diary.Perceptual and Motor Skills, 79, 287-296.Alamri, A., Hassan, M. M., Hossain, M.A., AI-Qurishi, M., Aldukhayyil, Y., & Hossain, S.M. (2014). Evaluating the impact of a cloud-based serious game on obese people.Computers in Human Behavior, 30, 468-475.Allender, s., Foster, c., Scarborough, P., & Rayner, M. (2007). The burden of physicalactivity-related ill health in the UK. Journal of Epidemiology and Community Health,61(4), 344-348.AI-Obaidi, S. M., Nelson, R. M., AI-Awadhi, S., & AI-Shuwaie, N. (2000). The role of anticipationand fear of pain in the persistence of avoidance behavior in patientswith chronic low back pain. Spine, 25(9), 1126-1131.Alschuler, K. N., Theisen-Goodvich, M. E., Haig, A. J., & Geisser, M. E. (2008). A comparison ofthe relationship between depression, perceived disability, and physical performance in persons withchronic pain. European Journal of Pain, 12(6), 757-764.American Association of Sleep Technologist. (2012). Clinical use of actigraphy. AmericanAssociation of Sleep Technologist. (2012). Standard polysomnography.American Psychiatric Association. (2013). The diagnostic and statistical manual of mentaldisorders 5th Edition. Washington, DC: American Psychiatric Association.Ancoli-lsrael, S., Cole, R., Alessi, C., Chambers, M., Moorcroft, W., & Pollak, C. P. (2003).The role of actigraphy in the study of sleep and circadian rhythms. Sleep, 26(3), 342-92.Andrews, N. E., Strong, J., Meredith, P. J., & D'Arrigo, R. G. (2014). Association betweenphysical activity and sleep in adults with chronic pain: A momentary, within-person perspective.Physical Therapy, 94(4), 499-510.Arber, S., Bate, M., & Meadows, R. (2009). Gender and socio-economic patterning ofself-reported sleep problems in Britain. Social Science and Medicine, 68(2), 281-289.Argyropoulos, S. V., Hicks, J. A., Nash, J. R., Bell, C. J., Rich, A. S., Nutt, D. J., & Wilson, S.J. (2003). Correlation of subjective and objective sleep measurements at different stages of thetreatment of depression. Psychiatry Research, 120(2), 179-190.Asmundson, G. J. G., Norton, P. J., & Vlaeyen, J. S. (2004). Fear-avpidance model of chronic pain:an overview. In G. J. G. Norton, J. S. Vlaeyen, & G. Crombez (Eds.). Understanding and treatingfear of pain (pp. 3-24). Oxford: Oxford University Press.Atkinson, G., & Davenne, D. (2007). Relationships between sleep, physical activity andhuman health. Physiology & Behavior, 90(2), 229-235.Balakrishnan, P. v. s., & Jacob, V. S. (1996). Genetic algorithms for product design.Management Science, 42(8), 1105-1117.Bandura, A. (1977). Self-efficacy: Toward a unifying theory of behavioral change.Psychological Review, 84{2}, 191-215.Baron, K. G., Reid, K. L, & Zee, P. C. (2013). Exercise to improve sleep in insomnia:Exploration of the bidirectional effects. Journal of Clinical Sleep Medicine, 9(8),819-824.Basler, H.-D., Luckmann, J., Wolf, U., & Quint, 5. (2008). Fear-avoidance beliefs, physicalactivity, and disability in elderly individuals with chronic low back pain and healthycontrols. The Clinical Journal of Pain, 24(7), 604-610.Bastien, C. H., Fortier-Brochu, E., Rioux, I., LeBlanc, M., Daley, M., & Morin, C. M. (2003).Cognitive performance and sleep quality in the elderly suffering from chronicinsomnia. Relationship between objective and subjective measures. Journal ofPsychosomatic Research, 54(1), 39-49.Bastien, C. H., Vallieres, A., & Morin, C. M. (2001). Validation of the Insomnia SeverityIndex as an outcome measure for insomnia research. Sleep Medicine, 2(4), 297-307.Bauman, A. E. (2004). Updating the evidence that physical activity is good for health: anepidemiological review 2000-2003. Journal of Science and Medicine in Sport, 7(1),6-19.Bauman, A., Merom, D., Bull, F. c., Buchner, D. M., & Fiatarone Singh, M. A. (2016).Updating the evidence for physical activity: summative reviews of theepidemiological evidence, prevalence, and interventions to promote "activeAging." The Gerontologist, 56(2), 5268-5280.Baeyer, C. L., Piira, T., Chambers, C. T., Trapanotto, M., & Zeltzer, L. K. (2005). Guidelinesfor the cold pressor task as an experimental pain stimulus for use with children.Journal of Pain, 6(4), 218-227.Benloucif, S., Orbeta, L., Ortiz, R., Janssen, I., Finkel, S. I., Bleiberg, J., & Zee, P. C. (2004).Morning or evening activity improves neuropsychological performance andsubjective sleep quality in older adults. Sleep, 27(8), 1542-1551.Bernard, P., Ivers, H., Savard, M. H., & Savard, J. (2016). Temporal relationships betweensleep and physical activity among breast cancer patients with insomnia. HealthPsychology, 35{12}, 1307-1315.Blagestad, T., Pallesen, 5., Lunde, L. H., Sivertsen, B., Nordhus, I. H., & Gronli, J. {2012}.Sleep in older chronic pain patients A comparative polysomnographic study. ClinicalJournal of Pain, 28{4}, 277-283.Bonnet, M. H., & Arand, D. L. {1992}. Caffeine use as a model of acute and chronicinsomnia. Sleep, 15{6}, 526-536.Booth, J. N., Bromley, L. E., Darukhanavala, A. P., Whitmore, H. R., Imperial, J. G., &Penev, P. D. {2012}. Reduced physical activity in adults at risk for type 2 diabeteswho curtail their sleep. Obesity, 20(2), 278-284.Borbely, A. A. {1982}. A two process model of sleep regulation. Human Neurobiology, 1,195-194.Borbely, A. A., & Achermann, P. {1999}. Sleep homeostasis and models of sleepregulation. Journal of Biological Rhythms, 14{6}, 559-568.Bousema, E. J., Verbunt, J. A., Seelen, H. A. M., Vlaeyen, J. W. 5., & Knottnerus, J. A.{2007}. Disuse and physical deconditioning in the first year after the onset of backpain. Pain, 130{3}, 279-286.Braun, V., & Clarke, V. {2006}. Using thematic analysis in psychology. QualitativeResearch in Psychology, 3{2}, 77-101.Breivik, H., Collett, B., Ventafridda, V., Cohen, R., & Gallacher, D. {2006}. Survey ofchronic pain in Europe: Prevalence, impact on daily life, and treatment. EuropeanJournal of Pain, 10, 287-333.Breivik, H., Eisenberg, E., & O'Brien, T. (2013). The individual and societal burden ofchronic pain in Europe: the case for strategic prioritisation and action to improveknowledge and availability of appropriate care. BMC Public Health, 13{1}, 1229-1243.Brickman, P., Coates, D., & Janoff-Bulman, R. {1978}. Lottery winners and accidentvictims: is happiness relative? Journal of Personality and Social Psychology, 36{8},917-927.Brooks, S. P. B., & Gelman, A. G. {1998}. General methods for monitoring convergence ofiterative simulations. Journal of Computational and Graphical Statistics, 7(4),434-455.Buckelew, S. P., Murray, S. E., Hewett, J. E., Johnson, J., & Huyser, B. (1995). Selfefficacy,pain, and physical activity among fibromyalgia subjects. Arthritis Care andResearch, 8(1), 43-50.Buman, M. P., Hekler, E. B., Bliwise, D. L., & King, A. C. (2011). Exercise effects on nightto-night fluctuations in self-rated sleep among older adults with sleep complaints.Journal of Sleep Research, 20(1), 28-37.Burton, N. W., Turrell, G., Oldenburg, B., & Sallis, J. F. (2005). The relative contributionsof psychological, social, and environmental variables to explain participation inwalking, moderate-, and vigorous- intensity leisure-time physical activity. Journal ofPhysical Activity and Health, 2(2), 181-196.Bussmann, J. B. J., Ebner-Priemer, U. W., & Fahrenberg, J. (2009). Ambulatory activitymonitoring: Progress in measurement of activity, posture, and specific motionpatterns in daily life. European Psychologist, 14(2), 142-152.Buysse, D. J., Reynolds, C. F., Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989). ThePittsburgh Sleep Quality Index: a new instrument for psychiatric practice andresearch. Psychiatry Research, 28(2), 193-213.Buysse, D. J., Thompson, W., Scott, J., Franzen, P. L., Germain, A., Hall, M., ... Kupfer, D. J.(2007). Daytime symptoms in primary insomnia: a prospective analysis usingecological momentary assessment. Sleep Medicine, 8(3), 198-208.Buysse, D. J., Yu, L., Moul, D. E., Germain, A., Stover, A., Dodds, N. E., ... Pilkonis, P. A.(2010). Development and validation of patient-reported outcome measures forsleep disturbance and sleep-related impairments. Sleep, 33(6), 781-792.Cane, D., Nielson, W. R., McCarthy, M., & Mazmanian, D. (2013). Pain-related activitypatterns: measurement, interrelationships, and associations with psychosocialfunctioning. The Clinical Journal of Pain, 29(5), 435-442.Cappuccio, Francesco P., D'Elia, L., Strazzullo, P., & Miller, M. A. (2010). Sleep durationand all-cause mortality: a systematic review and meta-analysis of prospectivestudies. Sleep, 33(5), 585-592.Cappuccio, F. P., Cooper, D., D'Elia, L., Strazzullo, P., & Miller, M. A. (2011). Sleepduration predicts cardiovascular outcomes: a systematic review and meta-analysisof prospective studies. European Heart Journal, 32(12),1484-1492.Carey, T., Moul, D., & Pilkonis, P. (2005). Focusing on the experience of insomnia.Behavioral Sleep Medicine, 3(2), 37-41.Carney, C. E., Buysse, D. J., Ancoli-Israel, 5., Edinger, J. D., Krystal, A. D., Lichstein, K. L., &Morin, C. M. (2012). The consensus sleep diary: standardizing prospective sleepself-monitoring. Sleep, 35(2), 287-302.Carskadon, M. A., & Dement, W. C. (2011). Normal human sleep: an overview. In M. H.Kryger, T. Roth, & W. C. Dement (Eds.), Principles And Practice Of Sleep Medicine(pp. 16-26). St. Louis: Elsevier Saunders.Chau, J. Y., van der Ploeg, H. P., Merom, D., Chey, T., & Bauman, A. E. (2012). Crosssectionalassociations between occupational and leisure-time sitting, physicalactivity and obesity in working adults. Preventive Medicine, 54(3), 195-200.Cleeland, C. 5., & Ryan, K. M. (1994). Pain assessment: global use of the brief paininventory. Annals Academy of Medicine, 23,129-138.Craig, C. L., Marshall, A. L., Sjostrom, M., Bauman, A. E., Booth, M. L., Ainsworth, B. E., ...Oja, P. (2003). International physical activity questionnaire: 12-country reliabilityand validity. Medicine and Science in Sports and Exercise, 35(8), 1381-1395.Crombez, G., Eccleston, c., van Damme, 5., Vlaeyen, J. W. 5., & Karoly, P. (2012). Fearavoidancemodel of chronic pain: the next generation. The Clinical Journal of Pain,28(6), 475-83.Cronlein, T., Wagner,S., Langguth, B., Geisler, P., Eichhammer, P., & Wetter, T. C.(2014). Are dysfunctional attitudes and beliefs about sleep unique to primaryinsomnia? Sleep Medicine, 15(12), 1463-1467.Daley, M., Morin, C. M., LeBlanc, M., Gregoire, J.-P., & Savard, J. (2009). The economicburden of insomnia: direct and indirect costs for individuals with insomniasyndrome, insomnia symptoms, and good sleepers. Sleep, 32(1), 55-64.Dam, T.T. L., Ewing,S., Ancoli-Israel, 5., Ensurd, K., Redline, 5., & Stone, K. (2008).Association between sleep and physical function in older men: the MrOS sleepstudy. Journal of the American Geriatrics Society, 56(9),1665-1673.Davies, K. A., Macfarlane, G. J., Nicholl, B. I., Dickens, c., Morriss, R., Ray, D., & McBeth,J. (2008). Restorative sleep predicts the resolution of chronic widespread pain:results from the EPIFUND study. Rheumatology, 47(12), 1809-1813.Denison, E., Asenl6f, P., & Lindberg, P. (2004). Self-efficacy, fear avoidance, and painintensity as predictors of disability in subacute and chronic musculoskeletal painpatients in primary health care. Pain, 111(3), 245-252.Desmeules, J. A., Cedraschi, C, Rapiti, E., Baumgartner, E., Finckh, A., Cohen, P., ...Vischer, T. L. (2003). Neurophysiologic evidence for a central sensitization inpatients with fibromyalgia. Arthritis and Rheumatism, 48(5), 1420-1429.Diaz-Piedra, C, Catena, A., Sanchez, A. I., Miro, E., Martinez, M. P., & Buela-Casal, G.(2015). Sleep disturbances in fibromyalgia syndrome: The role of clinical andpolysomnographic variables explaining poor sleep quality in patients. SleepMedicine, 16(8), 917-925.Diaz, K. M., Krupka, D. J., Chang, M. J., Shaffer, J. A., Ma, Y., Goldsmith, J., ... Davidson, K.W. (2016). Validation of the Fitbit One() for physical activity measurement at anupper torso attachment site. BMC Research Notes, 9(1), 213.Dijk, D. J., Duffy, J. F., & Czeisler, C. A. (2000). Contribution of circadian physiology andsleep homeostasis to age-related changes in human sleep. ChronobiologyInternational, 17(3), 285-311.Dijk, D., Shanahan, T. L., Duffy, J. F., Ronda, J. M., & Czeisler, c. A. (1997). Variation ofelectroencephalographic activity during non-rapid eye movement and rapid eyemovement sleep with phase of circadian melatonin rhythm in humans. Journal ofPhysiology, 505(3), 851-858.Dolan, P., & Kahneman, D. (2008). Interpretations of Utility and Their Implications forthe Valuation of Health. The Economic Journal, 118, 215-234.Dragioti, E., Levin, L.-A., Bernfort, L., Larsson, B., & Gerdle, B. (2017). Insomnia severityand its relationship with demographics, pain features, anxiety, and depression inolder adults with and without pain: cross-sectional population-based results fromthe PainS65+ cohort. Annals of General Psychiatry, 16(1), 15-25.Dzierzewski, J. M., Buman, M. P., Giacobbi, P. R., Roberts, B. L., Aiken-Morgan, A. T.,Marsiske, M., & McCrae, C. S. (2014). Exercise and sleep in community-dwellingolder adults: evidence for a reciprocal relationship. Journal of Sleep Research,23(1), 61-68.Edinger, J. D., Fins, A. I., Glenn, D. M., Sullivan, R. J., Bastian, L. A., Marsh, G. R., ...Vasilas, D. (2000). Insomnia and the eye of the beholder: are there clinical markersof objective sleep disturbances among adults with and without insomniacomplaints? Journal of Consulting and Clinical Psychology, 68(4), 586-593.Edinger, J. D., Glenn, D. M., Bastian, L. A., Marsh, G. R., Dailey, D., Hope, T. V., ... Meeks,G. (2003). Daytime testing after laboratory or home-based polysomnography:Comparisons of middle-aged insomnia sufferers and normal sleepers. Journal ofSleep Research, 12(1), 43-52.Edinger, J. D., Wohlgemuth, W. K., Krystal, A. D., & Rice, J. R. (2005). Behavioralinsomnia therapy for fibromyalgia patients: a randomized clinical trial. Archives ofInternal Medicine, 165(21), 2527-2535.Edwards, R. R., Almeida, D. M., Klick, B., Haythornthwaite, J. A, & Smith, M. T. (2008).Duration of sleep contributes to next-day pain report in the general population.Pain, 137(1), 202-207.Edwards, R. R., Bingham, C. 0., Bathon, J., & Haythornthwaite, J. A. (2006).Catastrophizing and pain in arthritis, fibromyalgia, and other rheumatic diseases.Arthritis Care and Research, 55(2), 325-332.Egan, S. J., Piek, J. P., Dyck, M. J., Rees, C. S., & Hagger, M. S. (2013). A clinicalinvestigation of motivation to change standards and cognitions about failure inperfectionism. Behavioural and Cognitive Psychotherapy, 41(5), 565-578.Elfving, B., Andersson, T., & Grooten, W. (2007). Low levels of physical activity in backpain patients are associated with high levels of fear-avoidance beliefs and paincatastrophizing. Physiotherapy Research International, 12{1}, 14-24.Espie, C. A., Broomfield, N. M., MacMahon, K. M. A., Macphee, L. M., & Taylor, L. M.{2006}. The attention-intention-effort pathway in the development ofpsychophysiologic insomnia: A theoretical review. Sleep Medicine Reviews, 10{4},215-245.Fayaz, A., Croft, P., Langford, R. M., Donaldson, L. J., & Jones, G. T. {2016}. Prevalence ofchronic pain in the UK: a systematic review and meta-analysis of populationstudies. BMJ Open, 6{6}, eOl0364.Feige, B., AI-Shajlawi, A., Nissen, c., Voderholzer, U., Hornyak, M., Spiegelhalder, K., .. ,Riemann, D. {2008}. Does REM sleep contribute to subjective wake time in primaryinsomnia? A comparison of polysomnographic and subjective sleep in 100 patients.Journal of Sleep Research, 17{2}, 180-190.Fernandez, A., Saamefio, J. A. B., Pinto-Meza, A., Luciano, J. V., Autonell, J., Palao, D., ...Serrano, A. {2010}. Burden of chronic physical conditions and mental disorders inprimary care. The British Journal of Psychiatry, 196{4}, 302-309.Fichten, C. S., Creti, L., Amsel, R., Brender, W., Weinstein, N., & Libman, E. {1995}. Poorsleepers who do not complain of insomnia: Myths and realities about psychologicaland lifestyle characteristics of older good and poor sleepers. Journal of BehavioralMedicine, 18{2}, 189-223.Field, A., Miles, J., & Field, Z. {2012}. Discovering statistics using R. London: SAGEPublications Ltd.Finan, P. H., Goodin, B. R., & Smith, M. T. {2013}. The association of sleep and pain: Anupdate and a path forward. Journal of Pain, 14{12}, 1539-1552.Flor, H., Diers, M., & Birbaumer, N. {2004}. Peripheral and electrocortical responses topainful and non-painful stimulation in chronic pain patients, tension headachepatients and healthy controls. Neuroscience Letters, 361{1-3}, 147-150.Foley, D., Ancell-Israel. S., Britz, P., & Walsh, J. {2004}. Sleep disturbances and chronicdisease in older adults: Results of the 2003 National Sleep Foundation Sleep inAmerica Survey. Journal of Psychosomatic Research, 56{5}, 497-502.Follick, M. J., Smith, W., & Ahern, D. K. (1985). The sickness impact profile: a globalmeasure of disability in chronic low back pain. Pain, 21(1),67-76.Fortier-Brochu, E., Beaulieu-Bonneau, 5., Ivers, H., & Morin, C. M. (2012). Insomnia anddaytime cognitive performance: a meta-analysis. Sleep Medicine Reviews, 16(1),83-94.Fortier, M.S., Guerin, E., Williams, T., & Strachan, s. (2015). Should I exercise or sleep tofeel better? A daily analysis with physically active working mothers. Mental Healthand Physical Activity, 8, 56-61.Garaulet, M., FB, 0., JR, R., JP, R.-L., Beghin, L., Manios, Y., ... LA, M. (2011). Short sleepduration is associated with increased obesity markers in European adolescents:effect of physical activity and dietary habits. The HELENA study. InternationalJournal of Obesity, 35(10), 1308-1317.Garland, s. N., Carlson, L. E., Stephens, A. J., Antle, M. c., Samuels, c., & Campbell, T. S.(2014). Mindfulness-based stress reduction compared with cognitive behavioraltherapy for the treatment of insomnia comorbid with cancer: A randomized,partially blinded, noninferiority trial. Journal of Clinical Oncology, 32,1-9.Gellis, L. A., Park, A., Stotsky, M. T., & Taylor, D. J. (2014). Associations between sleephygiene and insomnia severity in college students: cross-sectional and prospectiveanalyses. Behavior Therapy, 45(6),806-816.Glombiewski, J. A., Sawyer, A. T., Gutermann, J., Koenig, K., Rief, W., & Hofmann, S. G.(2010). Psychological treatments for fibromyalgia: a meta-analysis. Pain, 151(2),280-295.Godet-Cavre, V., Pelletier-Fleury, N., Le Vaillant, M., Dinet, J., Massuel, M. A., & Leger, D.(2006). Insomnia and absenteeism at work. Who pays the cost? Sleep, 29(2),179-184.Goldman, S. E., Stone, K. L., Ancoli-Israel, 5., Blackwell, T., Ewing, S. K., Boudreau, R., ...Newman, A. B. (2007). Poor sleep is associated with poorer physical performanceand greater functional limitations in older women. Sleep, 30(10), 1317-1324.Green, P. E., & Rao, V. R. (1971). Conjoint Measurement for Quantifying JudgmentalData. Journal of Marketing Research, 8(3), 355.Griffin, D. W., Harmon, D. c., & Kennedy, N. M. (2012). Do patients with chronic lowback pain have an altered level and/or pattern of physical activity compared tohealthy individuals? A systematic review of the literature. Physiotherapy, 98(1), 13-23.Groeger, J. A., Zijlstra, F. R. H., & Dijk, D. J. (2004). Sleep quantity, sleep difficulties andtheir perceived consequences in a representative sample of some 2000 Britishadults. Journal of Sleep Research, 13(4), 359-371.Guest, G., Bunce, A., & Johnson, L. (2006). How many interviews are enough?: Anexperiment with data saturation and variability. Field Methods, 18(1), 59-82.Gupta, A., Silman, A. J., Ray, D., Morriss, R., Dickens, C, MacFarlane, G. J., ... McBeth, J.(2007). The role of psychosocial factors in predicting the onset of chronicwidespread pain: Results from a prospective population-based study.Rheumatology, 46(4), 666-671.Haack, M., Sanchez, E., & Mullington, J. M. (2007). Elevated inflammatory markers inresponse to prolonged sleep restriction are associated with increased painexperience in healthy volunteers. Sleep, 30(9), 1145-1152.Harrison, Y. (2012). The functions of sleep. In c. M. Morin & c. A. Espie (Eds.), TheOxford Handbook of Sleep and Sleep Disorders (pp. 61-74). Oxford: OxfordUniversity Press.Harman, K., Pivik, R. T., D'Eon, J. L., Wilson, K. G., Swenson, J. R., & Matsunaga, L. (2002).Sleep in depressed and nondepressed participants with chronic low back pain:electroencephalographic and behaviour findings. Sleep, 25(7), 47-55.Hartescu, I., Morgan, K., & Stevinson, C. D. (2015). Increased physical activity improvessleep and mood outcomes in inactive people with insomnia: A randomizedcontrolled trial. Journal of Sleep Research, 24(5), 526-534.Hartmann, J. A., Carney, c. E., Lachowski, A., & Edinger, J. D. (2015). Exploring theconstruct of subjective sleep quality in patients with insomnia. Journal of ClinicalPsychiatry, 76(6), 768-773.Harvey, A. G. (2000). Pre-sleep cognitive activity: a comparison of sleep-onsetinsomniacs and good sleepers. The British Journal Of Clinical Psychology, 39(3t275-286.Harvey, A. G. (2002). A cognitive model of Insomnia. Beahaviour Research and Therapy,40(8L 869-893.Harvey, A. G., Sharpley, A. L., Ree, M. J., Stinson, K., & Clark, D. M. (2007). An open trialof cognitive therapy for chronic insomnia. Behaviour Research and Therapy, 45(10t2491-2501.Harvey, A. G., Stinson, K., Whitaker, K. L., Moskovitz, D., & Virk, H. (2008). The subjectivemeaning of sleep quality: a comparison of individuals with and without insomnia.Sleep, 31(3L 383-93.Harvey, A. G., & Tang, N. K. Y. (2012). (Mis)perception of sleep in insomnia: A puzzle anda resolution. Psychological Bulletin, 138, 77-101.Hasenbring, M. (2000). Attentional control of pain and the process of chronification.Progress in Brain Research, 129, 525-534.Hasenbring, M. I., Hallner, D., Klasen, B., Streltlein-Bohme, I., Will burger, R., & Rusche,H. (2012). Pain-related avoidance versus endurance in primary care patients withsubacute back pain: Psychological characteristics and outcome at a 6-month followup.Pain, 153(1), 211-217.Hasenbring, M. I., Plaas, H., Fischbein, B., & Willburger, R. (2006). The relationshipbetween activity and pain in patients 6 months after lumbar disc surgery: Do painrelatedcoping modes act as moderator variables? European Journal of Pain, 10(8t701-709.Hasenbring, M. I., & Verbunt, J. A. (2010). Fear-avoidance and endurance-relatedresponses to pain: new models of behavior and their consequences for clinicalpractice. The Clinical Journal of Pain, 26(9t 747-753.Haskell, W. L., Lee, I. M., Pate, R. R., Powell, K. E., Blair, S. N., Franklin, B. A., ... Bauman,A. (2007). Physical activity and public health: Updated recommendation for adultsfrom the American College of Sports Medicine and the American Heart Association.Medicine and Science in Sports and Exercise, 39(8), 1423-1434.Hay, J. L., White, J. M., Bochner, F., Somogyi, A. A., Semple, T. J., & Rounsefell, B. (2009).Hyperalgesia in opioid-managed chronic pain and opioid-dependent patients. TheJournal of Pain, 10(3), 316-322.Hays, R. D., Martin, S. a., Sesti, A. M., & Spritzer, K. L. (2005). Psychometric properties ofthe Medical Outcomes Study Sleep measure. Sleep Medicine, 6(1), 41-44.Helmus, M., Schiphorst Preuper, H. R., Hof, A L., Geertzen, J. H. B., & Reneman, M. F.(2012). Psychological factors unrelated to activity level in patients with chronicmusculoskeletal pain. Eurppean Journal of Pain, 16(8), 1158-1165.Hirshkowitz, M., Whiton, K., Albert, S. M., Alessi, c., Bruni, 0., DonCarlos, l., ... AdamsHillard, P. J. (2015). National sleep foundation's sleep time durationrecommendations: Methodology and results summary. Sleep Health, 1(1), 40-43.Hoffman, M. D., & Hoffman, D. R. (2007). Does aerobic exercise improve pain perceptionand mood? A review of the evidence related to healthy and chronic pain subjects.Current Pain and Headache Reports, 11(2), 93-97.Hoffman, M. D., Shepanski, M. A, Ruble, S. B., Valle, Z., Buckwalter, J. B., & Clifford, P. S.(2004). Intensity and duration threshold for aerobic exercise-induced analgesia topressure pain. Archives of Physical Medicine and Rehabilitation, 85(7), 1183-1187.Horne, J. A., & Ostberg, O. (1976). A self-assesment questionnaire to determinemorningness-eveningness in human circadian rhythms. International Journal ofChronobiology, 4(2),97-110.Horne, J. A., & Shackell, B. S. (1991). Alpha-like EEG activity in non-REM sleep and thefibromyalgia (fibrositis) syndrome. Electroencephalography and clinicalNeurophysiology, 79(4),271-276.Hu, F. B., Willett, W. c., li, T., Stampfer, M. J., Colditz, G. a, & Manson, J. E. (2004).Adiposity as compared with physical activity in predicting mortality among women.The New England Journal of Medicine, 351(26), 2694-2703.Huijnen, I. P. J., Verbunt, J. A, Peters, M. l., & Seelen, H. AM. (2010). Is physicalfunctioning influenced by activity-related pain prediction and fear of movement inpatients with subacute low back pain? European Journal of Pain, 14(6), 661-666.Huijnen, I. P. J., Verbunt, J. A., Peters, M. L., Smeets, R. J. E. M., Kindermans, H. P. J.,Roelofs, J., ... Seelen, H. A. M. (2011). Differences in activity-related behaviouramong patients with chronic low back pain. European Journal of Pain, 15(7), 748-755.Huijnen, I. P. J., Verbunt, J. a, Peters, M. L., Delespaul, P., Kindermans, H. P. J., Roelofs, J.,... Seelen, H. A. M. (2010). Do depression and pain intensity interfere with physicalactivity in daily life in patients with Chronic Low Back Pain? Pain, 150(1), 161-166.IASP Task Force on Taxonomy. (1994). The present classification. In H. Merskey & N.Bogduk (Eds.), Classification of chronic pain (p. 11). Seattle, WA: IASP Press.1lIJackson, T., Wang, Y., Wang, Y., & Fan, H. (2014). Self-efficacy and chronic painoutcomes: a meta-analytic review. Pain Research and Management, 15(8), 800-814.Jenkins, C. D., Stanton, B.-A., Niemcryk, S. J., & Rose, R. M. (1988). A scale for theestimation of sleep problems in clinical research. Journal of Clinical Epidemiology,41(4), 313-321.Jensen, C. V., & Bendix, T. (1992). Spontaneous movements with various seatedworkplaceadjustments. Clinical Biomechanics, 7(2), 87-90.Johannes, C. B., Le, T. K., Zhou, X., Johnston, J. A., & Dworkin, R. H. (2010). Theprevalence of chronic pain in United States adults: results of an internet-basedsurvey. Journal of Pain, 11(11), 1230-1239.Johns, M. W. (1991). A new method for measuring daytime sleepiness: The EpworthSleepiness Scale. Sleep, 14(6), 540-545.Jones, B. T., Macphee, L. M., Broomfield, N. M., Jones, B. c., & Espie, C. A. (2005). Sleeprelatedattentional bias in good, moderate, and poor (primary insomnia) sleepers.Journal of Abnormal Psychology, 114(2), 249-258.Jones, K. D., Sherman, C. A., Mist, S. D., Carson, J. W., Bennett, R. M., & Li, F. (2012). Arandomized controlled trial of 8-form Tai chi improves symptoms and functionalmobility in fibromyalgia patients. Clinical Rheumatology, 31(8), 1205-1214.Jungquist, C. R., O'Brien, c., Matteson-Rusby, 5., Smith, M. T., Pigeon, W. R., Xi a, Y., ...Perlis, M. L. (2010). The efficacy of cognitive behavioral therapy for insomnia inpatients with chronic pain. Sleep Medicine, 11(3), 302-309.Kaplan, K. A., Hirshman, J., Hernandez, B., Stefanick, M. L., Hoffman, A. R., Redline, 5., ...Zeitzer, J. M. (2017). When a gold standard isn't so golden: lack of prediction ofsubjective sleep quality from sleep polysomnography. Biological Psychology, 123,37-46.Keklund, G., & Akerstedt, T. (1997). Objective components of individual differences insubjective sleep quality. Journal of Sleep Research, 6, 217-220.Kerns, R. D., Turk, D. c., & Rudy, T. E. (1985). The West Haven-Yale MultidimensionalInventory (WHYMPI). Pain, 23,345-356.Kishi, A., Natelson, B. H., Togo, F., Struzik, Z. R., Rapoport, D. M., & Yamamoto, Y. (2011).Sleep-stage dynamics in patients with chronic fatigue syndrome with or withoutfibromyalgia. Sleep, 34(11}, 1551-1560.Kitson, A., Marshall, A., Bassett, K., & Zeitz, K. (2013). What are the core elements ofpatient-centred care? A narrative review and synthesis of the literature from healthpolicy, medicine and nursing. Journal of Advanced Nursing, 69(1), 4-15.Kleinman, L., Buysse, D. J., Harding, G., Lichstein, K., Kalsekar, A., & Roth, T. (2013).patient-reported outcomes in insomnia: development of a conceptual frameworkand endpoint model. Behavioral Sleep Medicine, 11(1), 23-36.Kline, C. E., Durstine, J. L., Davis, J. M., Moore, T. A., Devlin, T. M., Zielinski, M. R., &Youngstedt, S. D. (2007). Circadian variation in swim performance. Journal ofApplied Physiology, 102(2), 641-649.Kline, C. E., Irish, L. a, Krafty, R. T., Sternfeld, B., Kravitz, H. M., Buysse, D. J., ... Hall, M. H.(2013). Consistently high sports/exercise activity is associated with better sleepquality, continuity and depth in midlife women: the SWAN sleep study. Sleep,36(9),1279-1288.Kop, W. J., Lyden, A., Berlin, A. a, Ambrose, K., Olsen, c., Gracely, R. H., ... Clauw, D. J.(2005). Ambulatory monitoring of physical activity and symptoms in fibromyalgiaand chronic fatigue syndrome. Arthritis and Rheumatism, 52{1}, 296-303.Korszun, A., Young, E. A, Engleberg, N. c., Brucksch, C. B., Greden, J. F., & Crofford, L. A.{2002}. Use of actigraphy for monitoring sleep and activity levels in patients withfibromyalgia and depression. Journal of Psychosomatic Research, 52{6}, 439-43.Kraft, P., Yen, Y. c., Stram, D.O., Morrison, J., & Gauderman, W. J. {2007}. Exploitinggene-environment interaction to detect genetic associations. Human Heredity,63{2},111-119.Krystal, A. D., & Edinger, J. D. {2008}. Measuring sleep quality. Sleep Medicine, 9, SiDS17.Krystal, A. D., Edinger, J. D., Wohlgemuth, W. K., & Marsh, G. R. {2002}. NREM sleep EEGfrequency spectral correlates of sleep complaints in primary insomnia subtypes.Sleep, 25{6}, 630-640.Kyle, S. D., Espie, C. A., & Morgan, K. {2010}. "... Not just a minor thing, it is somethingmajor, which stops you from functioning daily": quality of life and daytimefunctioning in insomnia. Behavioral Sleep Medicine, 8{3}, 123-40.Kyle, S. D., Morgan, K., & Espie, C. A. {2010}. Insomnia and health-related quality of life.Sleep Medicine Reviews, 14{1}, 69-82.Lacey, R. J., Lewis, M., Jordan, K., Jinks, c., & Sim, J. {2005}. Interrater reliability ofscoring of pain drawings in a self-report health survey. Spine, 30{16}, E455-E458.Lambiase, M. J., Gabriel, K. P., Kuller, L. H., & Matthews, K. A. {2013}. Temporalrelationships between physical activity and sleep in older women. Medicine andScience in Sports and Exercise, 45{12}, 2362-2368.Landis, C. A., Lentz, M. J., Rothermel, J., Buchwald, D., & Shaver, J. L. F. {2004}.Decreased sleep spindles and spindle activity in midlife women with fibromyalgiaand pain. Sleep, 27{4}, 741-750.Landis, C. A., Lentz, M. J., Tsuji, J., Buchwald, D., & Shaver, J. L. F. {2004}. Pain,psychological variables, sleep quality, and natural killer cell activity in midlifewomen with and without fibromyalgia. Brain, Behavior, and Immunity, 18, 304-313.Landis, c. A., Frey, c. A, Lentz, M. J., Rothermel, J., Buchwald, D., & Shaver, J. L. F. (2003).Self-reported sleep quality and fatigue correlates with actigraphy in midlife womenwith fibromyalgia. Nursing Research, 52(3), 140-147.Lang, c., Kalak, N., Brand,S., Holsboer-Trachsler, E., Puhse, U., & Gerber, M. (2016). Therelationship between physical activity and sleep from mid adolescence to earlyadulthood. A systematic review of methodological approaches and meta-analysis.Sleep Medicine Reviews, 28, 32-45.Langhorst, J., Klose, P., Dobos, G. J., Bernardy, K., & Hauser, W. (2013). Efficacy andsafety of meditative movement therapies in fibromyalgia syndrome: A systematicreview and meta-analysis of randomized controlled trials. RheumatologyInternational, 33(1), 193-207.Lautenbacher, 5., Kundermann, B., & Krieg, J. (. (2006). Sleep deprivation and painperception. Sleep Medicine Reviews, 10(5), 357-369.Lavigne, G., Brousseau, M., Kato, T., Mayer, P., Manzini, C, Guitard, F., & Monplaisir, J.(2004). Experimental pain perception remains equally active over all sleep stages.Pain, 110(3), 646-655.LeBlanc, M., Merette, c.. Savard, J., Ivers, H., Baillargeon, L., & Morin, (. M. (2009).Incidence and risk factors of insomnia in a population-based sample. Sleep, 32(8),1027-1037.Lee, I. M., Shiroma, E. J., Lobelo, F., Puska, P., Blair, S. N., & Katzmarzyk, P. T. (2012).Impact of physical inactivity on the world's major non-communicable diseases. TheLancet, 380(9838), 219-229.Leonhardt, (., Lehr, D., Chenot, J. F., Keller,S., Luckmann, J., Basler, H. D., ... Becker, A.(2009). Are fear-avoidance beliefs in low back pain patients a risk factor for lowphysical activity or vice versa? A cross-lagged panel analysis. GMS Psycho-SocialMedicine, 6, 1-12.Lichstein, K. L., & Rosenthal, T. L. (1980). Insomniacs' perceptions of cognitive versussomatic determinants of sleep disturbance. Journal of Abnormal Psychology, 89(1),105-107.Lichstein, K. L., Stone, K. c., Donaldson, J., Nau, S. D., Soeffing, J. P., Murray, D., ...Aguillard, R. N. (2006). Actigraphy Validation with Insomnia. Sleep, 29(2), 232-239.Lin, C. W. c., McAuley, J. H., Macedo, L., Barnett, D. c., Smeets, R. J., & Verbunt, J. A.(2011). Relationship between physical activity and disability in low back pain: asystematic review and meta-analysis. Pain, 152(3), 607-613.Linton, S. J. (1985). The relationship between activity and chronic back pain. Pain, 21(3),289-294.Lundh, L. & Broman, J. (2000). Insomnia as an interaction between sleep-interfering andsleep-interpreting processes. Journal of Psychosomatic Research, 49(5), 299-310.Mannerkorpi, K. & Hernelid, C. (2005). Leisure time physical activity instrument andphysical activity at home and work instrument. Development, face validity,construct validity and test-retest reliability for subjects with fibromyalgia. Disabilityand Rehabilitation, 27(12), 695-701.Mansfield, M., Thacker, M., Spahr, N., & Smith, T. (2017). Factors associated withphysical activity participation in adults with chronic cervical spine pain. Asystematic review. Physiotherapy.Martin, J. B., Griffiths, T. L., & Sanborn, A. N. (2012). Testing the efficiency of Markovchain Monte Carlo with people using facial affect categories. Cognitivescience, 36(1), 150-162.Martinez, M. P., Miro, E., Snchez, A. I., Diaz-Piedra, c., Caliz, R., Vlaeyen, J. W. S., &Buela-Casal, G. (2014). Cognitive-behavioral therapy for insomnia and sleephygiene in fibromyalgia: A randomized controlled trial. Journal of BehavioralMedicine, 37(4), 683-697.McAuley, E., & Blissmer, B. (2000). Self-efficacy determinants and consequences ofphysical activity. Exercise and Sport Sciences Reviews, 28(2), 85-88.McBeth, J., Nicholl, B. I., Cordingley, L., Davies, K. A., & MacFarlane, G. J. (2010). Chronicwidespread pain predicts physical inactivity: Results from the prospective EPIFUNDstudy. European Journal of Pain, 14(9), 972-979.McCracken, L. M., & Iverson, G. L. (2002). Disrupted sleep patterns and daily functioningin patients with chronic pain. Pain Research and Management, 7{2}, 75-79.McCracken, l. M., Williams, J. l., & Tang, N. K. Y. {20ll}. Psychological flexibility mayreduce insomnia in persons with chronic pain: A preliminary retrospective study.Pain Medicine, 12, 904-912.McCrae, C. S., McNamara, J. P. H., Rowe, M. A., Dzierzewski, J. M., Dirk, J., Marsiske, M.,& Craggs, J. G. {2008}. Sleep and affect in older adults: using multilevel modeling toexamine daily associations. Journal of Sleep Research, 17{1}, 42-53.McGlinchey, E. l., Gershon, A., Eidelman, P., Kaplan, K. A., & Harvey, A. G. {2014}.Physical activity and sleep: Day-to-day associations among individuals with andwithout bipolar disorder. Mental Health and Physical Activity, 7{3}, 183-190.McLoughlin, M. J., Colbert, l. H., Stegner, A. J., & Cook, D. B. {2011}. Are women withfibromyalgia less physically active than healthy women? Medicine and Science inSports and Exercise, 43{5}, 905-912.Menefee, l. a, Cohen, M. J., Anderson, W. R., Doghramji, K., Frank, E. D., & Lee, H.{2000}. Sleep disturbance and nonmalignant chronic pain: A comprehensive reviewof the literature. Pain Medicine, 1(2), 156-172.Mercer, J. D., Bootzin, R. R., & Lack, l. C. (2002). Insomniacs' perception of wake insteadof sleep. Sleep, 25(5), 559-566.Milross, M. A., Piper, A. r., Norman, M., Dobbin, C. J., Grunstein, R. R., Sullivan, C. E., &Bye, P. T. P. (2002). Subjective sleep quality in cystic fibrosis. Sleep Medicine, 3{3},205-212.Moldofsky, H., Scarisbrick, P., England, R., & Smythe, H. (1975). Musculoskeletalsymptoms and non-REM sleep disturbance in patients with "fibrositis syndrome IIand healthy subjects. Psychosomatic Medicine, 37(4), 341-351.Mollayeva, T., Thurairajah, P., Burton, K., Mollayeva, S., Shapiro, C. M., & Colantonio, A.{2016}. The Pittsburgh sleep quality index as a screening tool for sleep dysfunctionin clinical and non-clinical samples: A systematic review and meta-analysis. SleepMedicine Reviews, 25, 52-73.Moorcroft, W. H. (2013). Understanding sleep and dreaming. New York: SpringerMorin, C. M. (1993). Insomnia psychological assessment and management. NewYork:Guildford Press.Morin, C. M., Gibson, D., & Wade, J. (1998). Self-reported sleep and mood disturbancein chronic pain patients. The Clinical Journal of Pain, 14(4), 311-314.Morin, C. M., Stone, J., Trinkle, D., Mercer, J., & Remsberg, S. (1993). Dysfunctionalbeliefs and attitudes about sleep among older adults with and without insomniacomplaints. Psychology and Aging, 8(3), 463-467.Morin, C. M., Vallieres, A., & Ivers, H. (2007). Dysfunctional beliefs and attitudes aboutsleep (DBAS): validation of a brief version (DBAS-16). Sleep, 30(11), 1547-1554.Mork, P. J., & Nilsen, T. I. L. (2012). Sleep problems and risk of fibromyalgia: Longitudinaldata on an adult female population in Norway. Arthritis and Rheumatism, 64(1),281-284.Morphy, H., Dunn, K. M., Lewis, M., Boardman, H. F., & Croft, P. R. (2007). Epidemiologyof insomnia: a longitudinal study in a UK population. Sleep, 30(3), 274-280.Mystakidou, K., Parpa, E., Tsilika, E., Pathiaki, M., Gennatas, K., Smyrniotis, V., &Vassiliou, I. (2007). The relationship of subjective sleep quality, pain, and quality oflife in advanced cancer patients. Sleep, 30(6), 737-742.Najafi, B., Aminian, K., Paraschiv-ionescu, A., Loew, F., BOla, C. J., & Robert, P. (2003).Ambulatory system for human motion analysis using a kinematic sensor:monitoring of daily physical activity in the elderly. IEEE Transactions on BiomedicalEngineering, 50(6), 711-723.Najafi, B., Crews, R. T., & Wrobel, J. S. (2010). Importance of time spent standing forthose at risk of diabetic foot ulceration. Diabetes Care, 33(11), 2448-2450.Najafi, B., Wrobel, J., & Armstrong, D. (2008). A novel ambulatory device for continuous24-h monitoring of physical activity in daily life. In Proceedings of American Societyof Biomechanics.National Health Service (2005). Creating a patient-led NHS: delivering the NHSimprovement plan. London: National Health Service. IIINaughton, F., Ashworth, P., & Skevington, S. M. (2007). Does sleep quality predict painrelated disability in chronic pain patients? The mediating roles of depression andpain severity. Pain, 127, 243-252.Neal, R. M. {1993}. Probabilistic inference using Markov Chain Monte Carlo Methods.Technical Report CRG- TR-93-1.Nicassio, P. M., Moxham, E. G., Schuman, c. E., & Gevirtz, R. N. {2002}. The contributionof pain, reported sleep quality, and depressive symptoms to fatigue infibromyalgia. Pain, 100{3), 271-279.Nicassio, P. M., & Wallston, K. A. {1992}. Longitudinal relationships among pain, sleepproblems, and depression in rheumatoid arthritis. Journal of Abnormal Psychology,101{3}, 514-520.Nitter, A. K., Pripp, A. H., & Forseth, K. {2012}. Are sleep problems and non-specifichealth complaints risk factors for chronic pain? A prospective population-basedstudy with 17 year follow-up. Scandinavian Journal of Pain, 3{4}, 21D-217.O'Donoghue, G. M., Fox, N., Heneghan, C, & Hurley, D. A. {2009}. Objective andsubjective assessment of sleep in chronic low back pain patients compared withhealthy age and gender matched controls: a pilot study. BMC MusculoskeletalDisorders, 10, 122.O'brien, E. M., Waxenberg, L. B., Atchison, J. W., Gremillion, H. A., Staud, R. M., McCrae,C. 5., & Robinson, M. E. {2010}. Negative mood mediates the effect of poor sleepon pain among chronic pain patients. The Clinical Journal of Pain, 26{4), 310-319.degard, S. S., Sand, T., Engstrern, M., Zwart, J. A., & Hagen, K. (2013). The impact ofheadache and chronic musculoskeletal complaints on the risk of insomnia:longitudinal data from the Nord-Trendelag health study. The Journal of HeadacheAnd Pain, 14{1}, 24-36.Ohayon, M. M. {2005}. Relationship between chronic painful physical condition andinsomnia. Journal of Psychiatric Research, 39{2}, 151-159.Ohida, T., Kamal, A. M., Uchiyama, M., Kim, K., Takemura, S., Sone, T., & Ishii, T. {2001}.The influence of lifestyle and health status factors on sleep loss among theJapanese general population. Sleep, 24{3}, 333-338.Okifuji, A., Donaldson, G., Barck, L., & Fine, P. (2010). Relationship between fibromyalgiaand obesity in pain, function, mood, and sleep. The Journal of Pain, 11(12), 1329-1337.Onen, S. H., Alloui, A., Gross, A., Eschallier, A., & Dubray, C. (2001). The effects of totalsleep deprivation, selective sleep interruption and sleep recovery on pain tolerancethresholds in healthy subjects. Journal of Sleep Research, 10(1), 35-42.Onen, S. H., Onen, F., Courpron, P., & Dubray, C. (2005). How pain and analgesics disturbsleep. The Clinical Journal of Pain, 21(5), 422-431.Oudegeest-Sander, M. H., Eijsvogels, T. H. M., Verheggen, R. J. H. M., Poelkens, F.,Hopman, M. T. E., Jones, H., & Thijssen, D. H. J. (2013). Impact of physical fitnessand daily energy expenditure on sleep efficiency in young and older humans.Gerontology, 59(1), 8-16.Owen, N., Healy, G. N., Matthews, C. E., & Dunstan, D. W. (2010). Too much sitting: thepopulation-health science of sedentary behavior. Exercise and Sports ScienceReviews, 38(3), 105-113.Ozminkowski, R. J., Wang,S., & Walsh, J. K. (2007). The direct and indirect costs ofuntreated insomnia in adults in the United States. Sleep, 30(3), 263-273.Parrino, L., Ferri, R., Bruni, 0., & Terzano, M. G. (2012). Cyclic alternating pattern (CAP):The marker of sleep instability. Sleep Medicine Reviews, 16(1), 27-45.Patel, S. R., & Hu, F. B. (2008). Short Sleep Duration and Weight Gain: A SystematicReview. Obesity, 16(3), 643-653.Patel, A. V., Bernstein, L., Deka, A., Feigelson, H. 5., Campbell, P. T., Gapstur, S. M., ...Thun, M. J. (2010). leisure time spent sitting in relation to total mortality in aprospective cohort of US adults. American Journal of Epidemiology, 172(4),419-429.Paul, S. 5., Tiedemann, A., Hassett, l. M., Ramsay, E., Kirkham, c., Chagpar, 5., &Sherrington, C. (2015). Validity of the Fitbit activity tracker for measuring steps incommunity-dwelling older adults. BMJ Open Sport & Exercise Medicine, 1(1), 1-5.Perl is, M. l., Giles, D. E., Mendelson, W. B., Bootzin, R. R., & Wyatt, J. K. (1997).Psychophysiological insomnia: the behavioural model and a neurocognitiveperspective. Journal of Sleep Research, 6(3), 179-188.Perl is, M. L., Smith, M. T., Orff, H. J., Andrews, P. J., & Giles, D. E. (2001). The mesogradeamnesia of sleep may be attenuated in subjects with primary insomnia. Physiologyand Behavior, 74(1), 71-76.Pilcher, J. J., Ginter, D. R., & Sadowsky, B. (1997). Sleep quality versus sleep quantity:relationships between sleep and measures of health, well-being and sleepiness incollege students. Journal of Psychosomatic Research, 42(6), 583-596.Pope, c., & Mays, N. (1995). Reaching the parts other methods cannot reach: anintroduction to qualitative methods in health and health services research. BritishMedical Journal, 311(6996), 42-45.111Ramlee, F., Afolalu, E. F., & Tang, N. K. Y. (2016). Do people with chronic pain judge theirsleep differently? A qualitative study. Behavioral Sleep Medicine, 1-16.Ramlee, F., Sanborn, A. N., & Tang, N. K. Y. (2017). What sways people?s judgement ofsleep quality? A quantitative choice-making study with good and poor sleepers.Sleep, 40(7).Rao, V. R. (2014). Applied conjoint analysis. Applied Conjoint Analysis (Vol. 9783540877).New York: Springer Berlin Heidelberg.Raymond, I., Nielsen, T. A., Lavigne, G., Manzini, c., & Choiniere, M. (2001). Quality ofsleep and its daily relationship to pain intensity in hospitalized adult burn patients.Pain, 92(3), 381-388.Rechtschaffen, A., & Bergmann, B. M. (2002). Sleep deprivation in the rat: an update ofthe 1989 paper. Sleep, 25(1}, 18-24.Rechtschaffen, A., Bergmann, B. M., Everson, C. A., Kushida, C. A., & Gilliland, M. A.(1989). Sleep deprivation in the rat: x. Integration and discussion of the findings.Sleep, 12(1), 68-87.Reid, K. J., Baron, K. G., Lu, B., Naylor, E., Wolfe, L., & Zee, P. C. (2010). Aerobic exerciseimproves self-reported sleep and quality of life in older adults with insomnia. SleepMedicine, 11(9), 934-940.Reiner, M., Niermann, c., Jekauc, D., & WolI, A. (2013). Long-term health benefits ofphysical activity - a systematic review of longitudinal studies. BMC Public Health,13(1), 822.Rejeski, W. J., Craven, T. E., Ettinger, W. H., McFarlane, M., & Shumaker, s. (1996). selfefficacyand pain in disability with osteoarthritis of the knee. Journal ofGerontology, 51B(1), P24-P29.Riemann, D., Spiegel halder, K., Feige, B., Voderholzer, U., Berger, M., Perlis, M., &Nissen, C. (2010). The hyperarousal model of insomnia: A review of the conceptand its evidence. Sleep Medicine Reviews, 14(1}, 19-31.Rizzi, M., Sarzi-puttinl, P., Atzeni, F., Capsoni, F., Andreoli, A., Colombo,S., ... Sergi, M.(2004). Cyclic Alternating Pattern: A New Marker of Sleep Alteration in Patientswith Fibromyalgia? The Journal of Rheumatology, 31(6}, 1193-1199.Roizenblatt, 5., Moldofsky, H., Benedito-Silva, A. A., & Tufik, s. (2001). Alpha sleepcharacteristics in fibromyalgia. Arthritis and Rheumatism, 44(1}, 222-230.Roshanaei-Moghaddam, B., Katon, W. J., & Russo, J. (2009). The longitudinal effects ofdepression on physical activity. General Hospital Psychiatry, 31(4}, 306-315.Russell, c.. Wearden, A. J., Fairclough, G., Emsley, R. A., & Kyle, s. D. (2016). Subjectivebut not actigraphy-defined sleep predicts next-day fatigue in chronic fatiguesyndrome: A prospective daily diary study. Sleep, 39(4}, 937-944.Ryan, C. G., Grant, P. M. M., Dall, P. M., Gray, H., Newton, M., & Granat, M. H. (2009).Individuals with chronic low back pain have a lower level, and an altered pattern, ofphysical activity compared with matched controls: an observational study. TheAustralian Journal of Physiotherapy, 55(1}, 53-58.Sallis, J. F., & Owen, N. (1999). Physical activity and behavioural medicine. London: SAGEPublications.Sanborn, A. N., Griffiths, T. L., & Shiffrin, R. M. (2010). Uncovering mentalrepresentations with Markov chain Monte Carlo. Cognitive Psychology, 60(2}, 63-106.scascighini, L. & Sprott, H. (2008). Chronic nonmalignant pain: a challenge for patientsand clinicians. Nature Reviews. Rheumatology, 4(2), 74-81.Schaal, S., Peter, M., & Randier, C. (2010). Morningness-eveningness and physicalactivity in adolescents. International Journal of Sport and Exercise Psychology, 8(2),147-159.Schmid, S. M., Hallschmid, M., Jauch-Chara, K., Wilms, B., Benedict, c., Lehnert, H., ...Schultes, B. (2009). Short-term sleep loss decreases physical activity under freelivingconditions but does not increase food intake under time-deprived laboratoryconditions in healthy men. The American Journal of Clinical Nutrition, 90(6), 1476-1482.Schopflocher, D., Taenzer, P., & Jovey, R. (2011). The prevalence of chronic pain inCanada. Pain Research And Management, 16(6), 445-450.Schutte-Rodin, S., Broch, L., Buysse, D., Dorsey, c., & Sateia, M. (2008). Clinical guidelinefor the evaluation and management of chronic insomnia in adults. Journal ofClinical Sleep Medicine, 4(5),487-504.Schwarz, G. (1978). Estimating the dimension of a model. The Annals of Statistics, 6(2),461-464.Semler, C. N. & Harvey, A. G. (2007). An experimental investigation of daytimemonitoring for sleep-related threat in primary insomnia. Cognition & Emotion,21(1), 146-161.Semler, C. N., & Harvey, A. G. (2005). Misperception of sleep can adversely affectdaytime functioning in insomnia. Behaviour Research and Therapy, 43(7), 843-56.Siegel, J. M. (2001). The REM sleep-memory consoliadation hypothesis. Science,294(5544),1058-1063.Smets, E. M. A., Garssen, B., Bonke, B. D., & De Haes, J. C. (1995). The MultidimensionalFatigue Inventory (MFI) psychometric qualities of an instrument to assess fatigue.Journal of Psychosomatic Research, 39(3), 315-325.Smith, H. S., Barkin, R. L., & Barkin, S. J. (2011). Personalized pharmacotherapy fortreatment approaches focused at primary insomnia. American Journal ofTherapeutics, 18, 227-240.Smith, J. a., & Osborn, M. (2007). Pain as an assault on the self: An interpretativephenomenological analysis of the psychological impact of chronic benign low backpain. Psychology & Health, 22(5), 517-534.Smith, M. T., Edwards, R. R., McCann, U. D., & Haythornthwaite, J. A. (2007). The effectsof sleep deprivation on pain inhibition and spontaneous pain in women. Sleep,30(4),494-505.Smith, M. T., & Haythornthwaite, J. A. (2004). How do sleep disturbance and chronicpain inter-relate? Insights from the longitudinal and cognitive-behavioral clinicaltrials literature. Sleep Medicine Reviews, 8(2), 119-132.Smith, M. T., Perlis, M. L., Carmody, T. P., Smith, M.S., & Giles, D. E. (2001). Presleepcognitions in patients with insomnia secondary to chronic pain. Journal ofBehavioral Medicine, 24(1), 93-114.Smith, M. T., Perlis, M. L., Smith, M. 5., Giles, D. E., & Carmody, T. P. (2000). Sleep qualityand presleep arousal in chronic pain. Journal of Behavioral Medicine, 23(1),1-13.Smith, M. T., Quartana, P. J., Okonkwo, R. M., & Nasir, A. (2009). Mechanisms by whichsleep disturbance contributes to osteoarthritis pain: A conceptual model. CurrentPain and Headache Reports, 13,447-454.Smith, M. T., Nasir, A., Campbell, C. M., & Okonkwo, R. (2012). Sleep disturbance andchronic pain: biobehavioral interactions. In C. M. Morin & c. A. Espie (Eds.), TheOxford Handbook of Sleep and Sleep Disorders (pp. 846-863). Oxford: OxfordUniversity Press.Smith,S., & Trinder, J. (2000). The effect of arousals during sleep onset on estimates ofsleep onset latency. Journal of Sleep Research, 9(2),129-135.Spenkelink, C. D., Hutten, M. M. R., Hermens, H. J., & Greitemann, S. O. L. (2002).Assessment of activities of daily living with an ambulatory monitoring system: acomparative study in patients with chronic low back pain and nonsymptomaticcontrols. Clinical Rehabilitation, 16(1), 16-26.Spiegelhalder, K., Kyle, 5. D., Feige, S., Prem, M., Nissen, c., Espie, c., & Riemann, D.(2010). The impact of sleep-related attentional bias on polvsomnographicallvmeasured sleep in primary insomnia. Sleep, 33(1), 107-112.Spielman, A. J., Caruso, L. 5., & Glovinsky, P .. (1987). A behavioral perspective oninsomnia treatment. Psychiatric Clinics of North America, 10(4), 541-553.Sporndly-Nees, 5., Asenlof, P., & Linberg, E. (2017). High or increasing levels of physicalactivity protect women from future insomnia. Sleep Medicine, 32, 22-27.Stewart, W. F., Ricci, J. A., Chee, E., Morganstein, D., & Lipton, R. (2003). Lost productivetime and cost due to common pain conditions in the US workforce. JAMA, 290(18),2443-2454.Stubb, B., Hurley, M., & Smith, T. (2015). What are the factors that influence physicalactivity participation in adults with knee and hip osteoarthritis? A systematicreview of physical activity correlates. Clinical Rehabilitation, 29(1), 80-94.Sullivan, M. J. L., Bishop, S. R., & Pivik, J. (1995). The pain catastrophizing scale:development and validation. Psychological Assessment, 7(4), 524-532.Sullivan, M. J., Thorn, B., Haythornthwaite, J. A., Keefe, F., Martin, M., Bradley, L. A., &Lefebvre, J. C. (2001). Theoretical perspectives on the relation betweencatastrophizing and pain. The Clinical Journal of Pain, 17(1), 52-64.Tang, N. K. V., Schmidt, D. A., & Harvey, A. G. (2007). Sleeping with the enemy: clockmonitoring in the maintenance of insomnia. Journal of Behavior Therapy andExperimental Psychiatry, 38(1), 40-55.Tang, N. K. V., Goodchild, C. E., Hester, J., & Salkovskis, P. M. (2012). Pain-relatedinsomnia versus primary insomnia: A comparison study of sleep pattern,psychological characteristics, and cognitive-behavioral processes. The ClinicalJournal of Pain, 28(5), 428-436.Tang, N. K. V., Goodchild, C. E., & Salkovskis, P. M. (2012). Hybrid cognitive-behaviourtherapy for individuals with insomnia and chronic pain: a pilot randomisedcontrolled trial. Behaviour Research and Therapy, 50(12), 814-21.Tang, N. K. V., Goodchild, C. E., Sanborn, A. N., Howard, J., & Salkovskis, P. M. (2012).Deciphering the temporal link between pain and sleep in a heterogeneous chronicpain patient sample: a multilevel daily process study. Sleep, 35(5), 675-687.Tang, N. K. Y., McBeth, J., Jordan, K. P., Blagojevic-Bucknall, M., Croft, P., & Wilkie, R.(2014). Impact of musculoskeletal pain on insomnia onset: a prospective cohortstudy. Rheumatology, 54(2), 248-256.Tang, N. K. Y., Salkovskis, P. M., Hodges, A., Soong, E., Hanna, M. H., & Hester, J. (2009).Chronic pain syndrome associated with health anxiety: a qualitative thematiccomparison between pain patients with high and low health anxiety. The BritishJournal of Clinical Psychology, 48(1), 1-20.Tang, N. K. Y. & Sanborn, A. N. (2014). Better quality sleep promotes daytime physicalactivity in patients with chronic pain? A multilevel analysis of the within-personrelationship. PloS One, 9(3), e92158.Tang, N. K. Y., Wright, K. J., & Salkovskis, P. M. (2007). Prevalence and correlates ofclinical insomnia co-occurring with chronic back pain. Journal of Sleep Research,16(1), 85-95.Tennen, H. & Affleck, G. (1996). Daily processes in coping with chronic pain: methodsand analytic strategies. In M. Zeidner & N. S. Endler (Eds.). Handbookof Coping:Theory, Research, Applications (pp. 151-177). USA: John Wiley & Sons, Inc.Terzano, M. G., Mancia, D., Salati, M. R., Cotani, G., Decembrino, A., & Parrino, L. (1985).The cyclic alternating pattern as a physiologic component of normal nrem sleep.Sleep, 8(2), 137-145.The actiwatch user manual. Cambridge: Cambridge Neurotechnology Ltd.Theadom, A. & Cropley, M. (2008). Dysfunctional beliefs, stress and sleep disturbance infibromyalgia. Sleep Medicine, 9(4), 376-381.Theadom, A. & Cropley, M. (2010). "This constant being woken up is the worst thing"experiencesof sleep in fibromyalgia syndrome. Disability and Rehabilitation,32(23), 1939-47.Theadom, A., Cropley, M., & Humphrey, K. L. (2007). Exploring the role of sleep andcoping in quality of life in fibromyalgia. Journal of Psychosomatic Research, 62(2),145-151.Thun, E., Bjorvatn, B., Osland, T., Steen, V. M., Sivertsen, B., Johansen, T., ... Pallesen, S.(2012). An actigraphic validation study of seven morningness-eveningnessinventories. European Psychologist, 17(3), 222-230.Tong, A., Sainsbury, P., & Craig, J. (2007). Consolidated criteria for reporting qualitativeresearch (COREQ): a 32- item checklist for interviews and focus groups.International Journal for Quality in Health Care, 19(6), 349-357.Treede, R., Rief, W., Barke, A., Aziz, Q., Bennett, M. I., Benoliel, R., ... Wang, S. (2015). Aclassification of chronic pain for ICD-l1. Pain, 156(6), 1003-1007.Trost, S. G., Pate, R. R., Freedson, P. 5., Sallis, J. F., & Taylor, W. C. (2000). Using objectivephysical activity measures with youth: how many days of monitoring are needed?Medicine and Science in Sports and Exercise, 32(2), 426-431.Turk, D. c., Robinson, J. P., & Burwinkle, T. (2004). Prevalence of fear of pain and activityin patients with fibromyalgia syndrome. The Journal of Pain, 5(9), 483-490.Turner, J. A. & Aaron, L. A. (2001). Pain-related catastrophizing: what is it? The ClinicalJournal of Pain, 17(1), 65-71.Turner, J. A., Ersek, M., & Kemp, C. (2005). Self-efficacy for managing pain is associatedwith disability, depression, and pain coping among retirement community residentswith chronic pain. The Journal of Pain, 6(7),471-479.Tyc, V. L. (1992). Psychosocial adaptation of children and adolescents with limbdeficiencies: A review. Clinical Psychology Review, 12(3), 275-291.Urponen, H., Vuori, I., Hasan, J., & Partinen, M. (1988). Self-evaluations of factorspromoting and disturbing sleep: an epidemiological survey in Finland. SocialScience and Medicine, 26(4), 443-450.Ustinov, V., Lichstein, K. L., Wal, G. S. Vander, Taylor, D. J., Riedel, B. W., & Bush, A. J.(2010). Association between report of insomnia and daytime functioning. SleepMedicine, 11(1), 65-68.US Department of Health and Human Services. (2008). Personalized Health Care:Pioneers, Partnerships Progress. Washington, DC: US Department of Health andHuman Services. 111van den Berg-Emons, R. J., Schasfoort, F. c., de Vos, L. A., Bussmann, J. B., & Stam, H. J.(2007). Impact of chronic pain on everyday physical activity. European Journal ofPain, 11(5), 587-593.van Deursen, L. L., Patijn, J., Durinck, J. R., Brouwer, R., Van Erven-Sommers, J. R., &Vortman, B. J. (1999). Sitting and low back pain: the positive effect of rotatorydynamic stimuli during prolonged sitting. European Spine Journal, 8(3), 187-193.van Someren, E. J. W., & Riemersma-Van Der Lek, R. F. (2007). Live to the rhythm, slaveto the rhythm. Sleep Medicine Reviews, 11(6),465-484.Vendrig, A. A., & Lousberg, R. (1997). Within-person relationships among pain intensity,mood and physical activity in chronic pain: A naturalistic approach. Pain, 73(1), 71-76.Verbunt, J. A., Huijnen, I. P. J., & K6ke, A. (2009). Assessment of physical activity in dailylife in patients with musculoskeletal pain. European Journal of Pain, 13(3), 231-242.Verbunt, J. A., Huijnen, I. P. J., & Seelen, H. A. M. (2012). Assessment of physical activityby movement registration systems in chronic pain. The Clinical Journal of Pain,28(6),496-504.Verbunt, J. A., Seelen, H. A., Vlaeyen, J. W. S, van de Heijden, G. J., Heuts, P. H., Pons, K.,& Knottnerus, J. A. (2003). Disuse and deconditioning in chronic low back pain:Concepts and hypotheses on contributing mechanisms. European Journal of Pain,7(1), 9-21.Verbunt, J. A., Sieben, J. M., Seelen, H. A., Vlaeyen, J. W. S., Bousema, E. J., van derHeijden, G. J., & Knottnerus, J. A. (2005). Decline in physical activity, disability andpain-related fear in sub-acute low back pain. European Journal of Pain, 9(4), 417-425.Verbunt, J. A., Smeets, R. J., & Wittink, H. M. (2010). Cause or effect? Deconditioningand chronic low back pain. Pain, 149(3),428-430.Vincent, N. K. & Walker, J. R. (2000). Perfectionism and chronic insomnia. Journal ofPsychosomatic Research, 49(5), 349-354.Vitale, J. A., Calogiuri, G., & Weydahl, A. (2013). Influence of chronotype on responses toa standardized, self-paced walking task in the morning vs afternoon: a pilot study.Perceptual & Motor Skills: Exercise & Sport, 116(3), 1020-1028.Vlaeyen, J. W. 5. & Linton, 5. J. (2000). Fear-avoidance and its consequences in chronicmusculoskeletal pain: A state of the art. Pain, 85(3), 317-332.Voiders, 5., Meulders, A., De Peuter, 5., & Vlaeyen, J. W. S. (2015). The reduction of fearof movement-related pain: does motivational context matter? The Clinical Journalof Pain, 31(11), 933-945.Walker, M. P., & van der Helm, E. (2009). Overnight therapy? The role of sleep Inemotional brain processing. Psychological Bulletin, 135(5), 731-748.Warburton, D. E. R., Nicol, C. W., & Bredin, S. S. D. (2006). Health benefits of phvslcalactivity: the evidence. Canadian Medical Association Journal, 174(6), 801?809.Webb, W. B., Bonnet, M., & Blume, G. (1976). Post-seep inventory. Perceptual andMotor Skills, 43(3), 987-993.Wells, G., Li, T., Maxwell, L., Maclean, R., & Tugwell, P. (2008). Responsiveness of patientreported outcomes including fatigue, sleep quality, activity limitation, and qualityof life following treatment with abatacept for rheumatoid arthritis. Annals of theRheumatic Diseases, 67(2), 260-265.Westerlund, A., lagerros, Y. T., Kecklund, G., Axelsson, J., & Akerstedt, T. (2014).Relationships Between Questionnaire Ratings of Sleep Quality andPolysomnography in Healthy Adults. Behavioral Sleep Medicine, 14(2), 185=199,World Health Organization. (2010). Global recommendations on physical activity forhealth. Switzerland: WHO Press. 111World Health Organization. (2000). The World Health Report 2000 = Heilith Systems:Improving Performance. Geneva: WHO.Widerstrom-Noga, E. G., Felipe-Cuervo, E., & Yezlerskl, R. p, (2001), ChMnlt p"ln ?ftetspinal injury: Interference with sleep and daily actlvltl??, Atehi?$ @/r??m#Medicine and Rehabilitation, 82(11), 1571=1577.Wilson, K. G., Watson, S. T., & Currie, S. R. (1998). Dailv dit\fV ?f\d ?m?"??mrrq ?1.iN-iib-lmonitoring of sleep in patients with Inscmnla lf>?()?ilt?d with ?ftlffili1lii?musculoskeletal pain. Pain, 75(1), 75-84.Woby, S. R., Roach, N. K., Urmston, M., & Watson, P. J. (2005). Psychometric propertiesof the TSK-11: a shortened version of the Tampa Scale for Kinesiophobia. Pain,117(1-2),137-44.Wolfe, F., & Hauser, W. (2011). Fibromyalgia diagnosis and diagnostic criteria. Annals ofMedicine, 43(7), 495-502.Wyatt, J. K., Bootzin, R. R., Anthony, J., & Bazant, S. (1994). Sleep onset is associatedwith retrograde and anterograde amnesia. American Sleep Disorders Associationand Sleep Research Society, 17(6), 502-511.,Xie, L., Kang, H., Xu, Q., Chen, M. J., Liao, Y., Thiyagarajan, M., ... Nedergaard, M. (2013).Sleep drives metabolite clearance from the adult brain. Science, 342(6156), 373-377.Yang, G., Lai, C. S. W., Cichon, J., Ma, L., Li, W., & Gan, W. B. (2014). Sleep promotesbranch-specific formation of dendritic spines after learning. Science, 344(6188),1173-1178.Yetish, G., Kaplan, H., Gurven, M., Wood, B., Pontzer, H., Manger, P. R., ... Siegel, J. M.(2015). Natural sleep and its seasonal variations in three pre-industrial societies.Current Biology, 25(21), 2862-2868.Yeung, R. P. (1996). The acite effects of exercise on mood state. Journal ofPsychosomatic Research, 4O(2), 123-141.Yi, H., Shin, K., & Shin, C. (2006). Development of the Sleep Quality Scale. Journal ofSleep Research, 15(3), 309-316.Youngstedt, S. D., Kripke, D. F., & Elliott, J. A. (2002). Circadian phase-delaying effects ofbright light alone and combined with exercise in humans. American Journal ofPhysiology. Regulatory, Integrative and Comparative Physiology, 282(1), R259-R266.Youngstedt, S. D., Perl is, M. L., O'Brien, P. M., Palmer, C. R., Smith, M. T., Orff, H. J., &Kripke, D. F. (2003). No association of sleep with total daily physical activity innormal sleepers. Physiology and Behavior, 78(3), 395-401.Yu, L., Buysse, D. J., Germain, A., Maul, D. E., Stover, A., Dodds, N. E., ... Pilkonis, P. A.(2011). Development of short forms from the PROMIS sleep disturbance and sleeprelatedimpairment item banks. Behavioral Sleep Medicine, lO{l}, 6-24.Zigmond, A. S., & Snaith, R. P. {1983}. The hospital anxiety and depression scale. ActaPsychiatrica Scandinavica, 67(6), 361-370.