Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers
Introduction: Prolonged standing has been recognized as one of the factors which contributes about83% of MSDs among industrial workers (Zander, King and Ezenwa, 2004). Many ergonomics interventions have been recommended to reduce the effects of prolonged standing andvibration massage was found a...
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my-upm-ir.1041582023-07-26T02:21:15Z Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers 2021-07 Omar, Noreen Adila Introduction: Prolonged standing has been recognized as one of the factors which contributes about83% of MSDs among industrial workers (Zander, King and Ezenwa, 2004). Many ergonomics interventions have been recommended to reduce the effects of prolonged standing andvibration massage was found as an effective solution to delayed onset of muscle pain and discomfort. Objective: Thus, main objective of this study was to study the effect of prototype insole built-in massager on lower leg muscle discomfort among industrial workers during prolonged standing. Methodology: The study was conducted in a controlled room at a selected manufacturing company in Selangor which involved 110 male respondents. First phase of study involved the identification of characteristics in Product Design Specification (PDS) for an ideal prototype insole built-in massager. Then, second phase involved the experimental study design in which the prototype insole built-in massager being compared with other interventions (footrest and anti-fatigue mat) and control group (normalshoe). The respondents evaluated their discomfort rating using Borg’s Scales Questionnaire for every 15 minutes. At the same time, sEMG electrodes were attachedDuring the 2-hours standing, all respondents would do a task which were sorting the mixed items at the workstation provided. Results and discussion: Results indicated that respondents do experience mild discomfort on all their body parts during the experimental study especially at the lower body parts. Interventions (prototype insole built-in massager, footrest and anti-fatigue mat) groups had showed reductions in discomfort rating for all body parts compared to control group.The sEMG results indicated that prototype insole built-in massager gave the lowest percentage of exertion (22.38 – 42.2%) for all muscles studied compared to other interventions (anti-fatigue mat and footrest). There was a positive effect of discomfort level on both left and right Tibialis anterior and Gastrocnemius with the usage of prototype insole built-in massager compared to control group.There was a significant difference of discomfort rating between control and prototype insole built-in massager shoe group at ankle and feet, knee and calf part(p<0.05).Besides, there were significant differences of means for sEMG level (p<0.001) of the prototype built-in massager with other interventions (anti-fatigue mat and footrest). Conclusion and recommendations: Overall, there were positive indicator that the prototype insole built-in massager reduced the muscle discomfort of lower leg muscles to the workers compared to other interventions.Vibration massager in the insoles increase the blood circulation by relaxing foot muscles and decrease the discomfort level of the feet. However, this study recommended a much bigger population and more variation in measurement was needed. This prototype insole built-in massager can also serve as the reference required for the future interventions of prolonged standing among industrial workers. Lower Extremity - injuries Leg - physiology Muscles - physiology 2021-07 Thesis http://psasir.upm.edu.my/id/eprint/104158/ http://psasir.upm.edu.my/id/eprint/104158/1/FPSK%28p%29%202022%2023%20IR.pdf text en public doctoral Universiti Putra Malaysia Lower Extremity - injuries Leg - physiology Muscles - physiology Karuppiah, Karmegam |
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Karuppiah, Karmegam |
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Lower Extremity - injuries Leg - physiology Muscles - physiology |
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Lower Extremity - injuries Leg - physiology Muscles - physiology Omar, Noreen Adila Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers |
| description |
Introduction: Prolonged standing has been recognized as one of the factors
which contributes about83% of MSDs among industrial workers (Zander, King
and Ezenwa, 2004). Many ergonomics interventions have been recommended
to reduce the effects of prolonged standing andvibration massage was found
as an effective solution to delayed onset of muscle pain and discomfort.
Objective: Thus, main objective of this study was to study the effect of
prototype insole built-in massager on lower leg muscle discomfort among
industrial workers during prolonged standing. Methodology: The study was
conducted in a controlled room at a selected manufacturing company in
Selangor which involved 110 male respondents. First phase of study involved
the identification of characteristics in Product Design Specification (PDS) for an
ideal prototype insole built-in massager. Then, second phase involved the
experimental study design in which the prototype insole built-in massager
being compared with other interventions (footrest and anti-fatigue mat) and
control group (normalshoe). The respondents evaluated their discomfort rating
using Borg’s Scales Questionnaire for every 15 minutes. At the same time,
sEMG electrodes were attachedDuring the 2-hours standing, all respondents
would do a task which were sorting the mixed items at the workstation
provided. Results and discussion: Results indicated that respondents do
experience mild discomfort on all their body parts during the experimental
study especially at the lower body parts. Interventions (prototype insole built-in
massager, footrest and anti-fatigue mat) groups had showed reductions in
discomfort rating for all body parts compared to control group.The sEMG
results indicated that prototype insole built-in massager gave the lowest
percentage of exertion (22.38 – 42.2%) for all muscles studied compared to
other interventions (anti-fatigue mat and footrest). There was a positive effect
of discomfort level on both left and right Tibialis anterior and Gastrocnemius
with the usage of prototype insole built-in massager compared to control
group.There was a significant difference of discomfort rating between control and prototype insole built-in massager shoe group at ankle and feet, knee and
calf part(p<0.05).Besides, there were significant differences of means for
sEMG level (p<0.001) of the prototype built-in massager with other
interventions (anti-fatigue mat and footrest). Conclusion and recommendations:
Overall, there were positive indicator that the prototype insole built-in massager
reduced the muscle discomfort of lower leg muscles to the workers compared
to other interventions.Vibration massager in the insoles increase the blood
circulation by relaxing foot muscles and decrease the discomfort level of the
feet. However, this study recommended a much bigger population and more
variation in measurement was needed. This prototype insole built-in massager
can also serve as the reference required for the future interventions of
prolonged standing among industrial workers. |
| format |
Thesis |
| qualification_level |
Doctorate |
| author |
Omar, Noreen Adila |
| author_facet |
Omar, Noreen Adila |
| author_sort |
Omar, Noreen Adila |
| title |
Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers |
| title_short |
Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers |
| title_full |
Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers |
| title_fullStr |
Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers |
| title_full_unstemmed |
Effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers |
| title_sort |
effect of footwear interventions on muscle discomfort and lower leg muscle fatigue among industrial workers |
| granting_institution |
Universiti Putra Malaysia |
| publishDate |
2021 |
| url |
http://psasir.upm.edu.my/id/eprint/104158/1/FPSK%28p%29%202022%2023%20IR.pdf |
| _version_ |
1776100413728096256 |