1F22 座位姿勢における若年者と高齢者の動的バランス能力の比較

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  • 1F22 The comparison of dynamic balance ability of young fellow and elderly person in a seating position posture

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This paper presents a system for evaluating balance in elderly people to prevent fells. The proposed system comprises a position sensor for measuring the upper body joint position, a stabilometer for measuring the center of pressure trajectory and the seat reaction force, a one-degree-of-freedom platform for producing seat perturbation. The seat reaction force and joint position of the upper body were used to calculate the joint torque of the 3rd lumbar vertebra. In addition, electromyography was measured a line call of the young to watch the function of human of trunk line at the time of the unrest. In the experiments, 29 young and 17 older healthy adults tried to maintain a sitting posture relative to the seat perturbation (0.3 Hz 7 deg amplitude). The root mean square of COP trajectory and the joint torque of the 3rd lumber vertebra in elderly people were significantly higher than those in young subjects. Line activity for the unrest was seen with almost all human trunk lines of the young. Results of experiments show that the COP trajectory and the joint torque were significantly higher in elderly subjects.

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