| Kinetic and Kinematic Comparison of Sit-To-Stand Movement between Healthy Young and Elderly Subjects. |
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Kim, Du Hwan , Park, Sung Min , Jeon, Doyoung , Sung, Duk Hyun |
1Department of Physical Medicine and Rehabilitation, Sungkyunkwan University School of Medicine, Korea. ri-pheonix@hanmail.net
2Department of Mechanical Engineering, Sogang University, Korea. |
| 노인과 청장년에서 앉은 자세에서 일어나기 동작의 생체역학적 분석 |
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김두환, 박성민, 전도영1, 성덕현 |
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성균관대학교 의과대학 재활의학교실, 1서강대학교 기계공학과 |
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| Abstract |
Objective
The purpose of this study was to compare the kinematic and kinetic parameters in sit-to-stand (STS) movement between healthy elderly and young people.
Method
We measured the maximal isometric hip and knee extension moment of the ten healthy young volunteers and ten elderly and analyzed the STS movement using a motion analyzer. The differences of temporal, kinematic, and kinetic variables between young and elderly were assessed.
Results
The maximal knee isometric moment of elderly was lower than that of young. There were no differences in total duration and the range of motion of hip and knee during STS movement between young and elderly. Com-paring the kinetic variables normalized by maximal isometric extension moment, maximal knee extension moment and knee work were significantly higher in elderly. There were no differences in maximal knee power and kinetic variables of hip between young and elderly.
Conclusion
It was the marked difference of STS movement between young and elderly that maximal knee extension moment normalized by maximal isometric extension moment was higher in elderly. It was reasonable that this difference was due to the difference of maximal knee isometric torque. (J Korean Acad Rehab Med 2006; 30: 385-391) |
| Key Words:
Sit-to-stand, Kinetic, Kinematic |
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