Quantification of lower extremity physical exposures in various combinations of sit/stand time duration associated with sit-stand workstation.
Med Pr
; 68(3): 315-327, 2017 May 16.
Article
en En
| MEDLINE
| ID: mdl-28512361
ABSTRACT
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 ANDMETHODS:
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.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Postura
/
Lugar de Trabajo
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Músculo Esquelético
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Extremidad Inferior
Tipo de estudio:
Qualitative_research
/
Risk_factors_studies
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Med Pr
Año:
2017
Tipo del documento:
Article