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KMID : 1002720110090010031
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Journal of Korean Proprioceptive Neuromuscular Facilitation Association
2011 Volume.9 No. 1 p.31 ~ p.38
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The Analysis of Movement time and Ground Reaction Force during Sit to Stand Task in Healthy
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Kim Soo-Min
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Abstract
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Purpose：Sit-to-stand (STS) is one of the important activities of daily living (ADL) and each of its parameters is used frequently. This study aimed to examine the influence of different seat height on performance time and floor reaction force strength during an STS movement.
Methods：Fifteen young-adult male subjects participated in this study. The subjects were divided into three groups based on lower leg length. Subjects performed an STS movement twice from chairs at height adjusted by the lower leg length of each subject. To examine the influence of the chair seat height, ground reaction forces during a STS performed with 3 chair heights adjusted to each subjects lower leg length were compared.
Results：Vertical ground reaction force and time during an STS movement were measured to evaluate. Parameters regarding ground reaction force were selected for analyses. Significant differences were found in ground reaction force at G1 was greater than G2 and G3.
Conclusion：The STS movement achievement strategy differed since chair seat height changes relatively by the difference in lower leg length. When conducting the ability to achieve STS movement rating test, chair seat height considering each subject’s lower leg length may be needed.
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KEYWORD
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Sit to stand movement, Seat height, Lower leg length, Ground reaction force
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