Kup czasopismo
PL EN
PRACA ORYGINALNA
Quantification of lower extremity physical exposures in various combinations of sit/stand time duration associated with sit-stand workstation
,
 
,
 
,
 
Min Qu 1
,
 
,
 
 
 
 
Więcej
Ukryj
1
Northwestern Polytechnical University, Xi’an, China (Shaanxi Engineering Laboratory for Industrial Design)
 
2
Mississippi State University, Mississippi, USA (Department of Industrial and Systems Engineering)
 
 
Data publikacji online: 26-04-2017
 
 
Autor do korespondencji
Huining Pei   

Northwestern Polytechnical University, Shaanxi Engineering Laboratory for Industrial Design, West Youyi Road 127, 710072 Xi’an, China
 
 
Med Pr Work Health Saf. 2017;68(3):315-27
 
SŁOWA KLUCZOWE
DZIEDZINY
STRESZCZENIE
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
eISSN:2353-1339
ISSN:0465-5893
Journals System - logo
Scroll to top