- Tytuł:
- Quantification of lower extremity physical exposures in various combinations of sit/stand time duration associated with sit-stand workstation
- Autorzy:
-
Pei, Huining
Yu, Suihuai
Babski-Reeves, Kari
Chu, Jianjie
Qu, Min
Tian, Baozhen
Li, Wenhua - Powiązania:
- https://bibliotekanauki.pl/articles/2164098.pdf
- Data publikacji:
- 2017-05-16
- Wydawca:
- Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
- Tematy:
-
electromyography
ergonomic intervention
perceived level of discomfort
root mean square
body mass index
gender differences - Opis:
- Background Sit-stand workstations are available for office work purposes but there is a dearth of quantitative evidence to state benefits for lower limb outcomes while using them. And there are no guidelines on what constitutes appropriate sit/stand time duration. The primary aim of this study has been to compare muscle activity and perceived discomfort in the lower extremity during various combinations of sit/stand time duration associated with a sit-stand workstation separately and to evaluate the effects of the sit-stand workstation on the lower extremity during the text entry task. Material and Methods During the 5 days, all participants completed a 2-h text entry task each day for various sit/stand time duration combinations as follows: 5/25 min, 10/20 min, 15/15 min, 20/10 min, 25/5 min. Lower extremity muscular exposure of 12 male and 13 female participants was collected at 8 sites by surface electromyography and body discomfort was calculated by a questionnaire under those 5 conditions. Results Results have demonstrated that lower extremity muscle activity has been significantly varied among the 5 sit/stand time duration groups. Perceived level of discomfort (PLD) has not differed significantly for 9 out of 10 body parts. Conclusions The muscle activity of the thigh region was influenced by sit/stand time duration significantly. Ergonomic exposures of lower extremity when using a sit-stand workstation were increased, particularly during the long time standing posture. Results indicate that body mass index (BMI) and gender were not significant factors in this study. Combination of sit/stand time duration 25/5 min appears to show positive effects on relief of muscle exposure of back of thigh in the shifts of sitting and standing work position. Med Pr 2017;68(3):315–327
- Źródło:
-
Medycyna Pracy; 2017, 68, 3; 315-327
0465-5893
2353-1339 - Pojawia się w:
- Medycyna Pracy
- Dostawca treści:
- Biblioteka Nauki
Artykuł