Biomechanical differences between sit-to-stand performances using one leg and two legs in young adults

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Published: Nov 12, 2019
Keywords:
sit-to-stand test one-leg sit-to-stand movement ground reaction force kinematics joint kinetics

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Surachart Thongchoomsin
Department of Occupational Therapy, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom Province, Thailand
Sunee Bovonsunthonchai
Department of Physical Therapy, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom Province, Thailand
Samatchai Chamnongkich
Department of Physical Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai Province, Thailand

Abstract

Background: Sit-to-stand (STS) test is widely used as a functional test for the assessment of lower extremity function in the elderly. Performing the STS movement with one-leg was introduced as an assessment of lower extremity muscle strength in young adults; however, the biomechanical differences between the traditional two-leg STS movement and one-leg STS movement have not been reported. The purposes of this study were to characterize and compare the kinematic and kinetic differences between the one-leg and two-leg STS movements.


Materials and methods: Fifteen young adults (8 men and 7 women) with mean age 26.18±3.88 years participated in this study. The kinematic and kinetic data during one-leg and two-leg STS testing conditions were collected and analyzed using force plates and a three-dimensional motion analysis system.


Results: Performance time was significantly longer in the one-leg STS condition than the two-leg STS condition (p<0.001). The peak joint angular positions of the hip, knee, and ankle were not different between the two STS testing conditions. All kinetic variables of the one-leg STS condition were significantly higher than those of the two-leg STS condition (p<0.05), except peak knee joint power in the concentric phase.


Conclusion: The more demanding task of the one-leg STS condition led to several changes in the joint moment and joint power of the lower extremity. The hip extensor and ankle dorsiflexor muscles demonstrated significant roles in addition to the knee extensor muscles during the one-leg STS task.

Article Details

How to Cite
Thongchoomsin, S., Bovonsunthonchai, S., & Chamnongkich, S. (2019). Biomechanical differences between sit-to-stand performances using one leg and two legs in young adults. Journal of Associated Medical Sciences, 53(1), 29–36. Retrieved from https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/192037
Issue
Vol. 53 No. 1 (2020): January-April
Section
Research Articles
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Personal views expressed by the contributors in their articles are not necessarily those of the Journal of Associated Medical Sciences, Faculty of Associated Medical Sciences, Chiang Mai University.

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