Quantification of lower extremity physical exposures in various combinations of sit/stand time duration associated with sit-stand workstation
| Title: | Quantification of lower extremity physical exposures in various combinations of sit/stand time duration associated with sit-stand workstation |
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| Authors: | Huining Pei, Suihuai Yu, Kari Babski-Reeves, Jianjie Chu, Min Qu, Baozhen Tian, Wenhua Li |
| Source: | Medycyna Pracy, Vol 68, Iss 3, Pp 315-327 (2017) |
| Publisher Information: | Nofer Institute of Occupational Medicine, 2017. |
| Publication Year: | 2017 |
| Collection: | LCC:Public aspects of medicine |
| Subject Terms: | electromyography, ergonomic intervention, perceived level of discomfort, root mean square, body mass index, gender differences, Public aspects of medicine, RA1-1270 |
| More Details: | 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 |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English Polish |
| ISSN: | 0465-5893 2353-1339 |
| Relation: | http://medpr.imp.lodz.pl/Quantification-of-lower-extremity-physical-exposures-nin-various-combinations-of-sit-stand-time-duration-nassociated-with-sit-stand-workstation,69240,0,1.html; https://doaj.org/toc/0465-5893; https://doaj.org/toc/2353-1339 |
| DOI: | 10.13075/mp.5893.00613 |
| Access URL: | https://doaj.org/article/4977ac532bc04639b5630c90d038cfe9 |
| Accession Number: | edsdoj.4977ac532bc04639b5630c90d038cfe9 |
| Database: | Directory of Open Access Journals |
| ISSN: | 04655893 23531339 |
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| DOI: | 10.13075/mp.5893.00613 |
| Published in: | Medycyna Pracy |
| Language: | English Polish |