AGE-STAGE DIFFERENCES IN BODY SWAY DURING A STATIC UPRIGHT POSTURE BASED ON SWAY FACTORS AND RELATIVE ACCUMULATION OF POWER FREQUENCY
AGE-STAGE DIFFERENCES IN BODY SWAY DURING A STATIC UPRIGHT POSTURE BASED ON SWAY FACTORS AND RELATIVE ACCUMULATION OF POWER FREQUENCY
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DOI：
10.2466/pms.107.1.89-98
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发表时间：
2008-08-01
影响因子：
1.6
通讯作者：
Aoki, Hiroki
中科院分区：
文献类型：
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作者：
Demura, Shin-Ichi;Kitabayashi, Tamotsu;Aoki, Hiroki
本研究通过身体摇摆因素（单位时间摇摆、前后摇摆、左右摇摆和高频波段功率）、功率谱分布和压力中心频谱的功率频率（25%、50%和75% RAPF）的相对积累来检验年龄阶段（学龄前儿童、年轻人和老年人）压力中心摇摆的差异。用阿尼玛稳定仪测量压力中心运动1分钟2次。数据采样频率设置为20 Hz。除左右摇摆外，其他3个因素存在显著的年龄阶段差异，学龄前儿童和老年人的差异大于年轻人。在任何年龄阶段，身体摇摆的功率谱主要记录在低频波段。在每个年龄阶段差异中，75%的RAPF身体摇摆特征存在显著的年龄阶段差异，而在低频波段，体位摇摆频率存在显著差异。
This study was done to examine age-stage (preschool Children, young adults, and elderly people) differences in the center-of-pressure Sway using body-sway factors (unit-time sway, front-back sway, left-right sway, and high frequency-band power), power-spectrum distribution, and relative accumulation of power frequency (25%, 50%, and 75% RAPF) of the center-of-pressure spectrum. The center-of-pressure movement for 1 min. was measured twice using Anima's stabilometer. Data-sampling frequency was set at 20 Hz. Significant age-stage differences were found for 3 factors except for left-right sway, which was larger for preschool children and elderly than for young adults. The power spectrum of body sway in any age-stage was noted mainly In low frequency bands. A marked age-stage difference was found at 75% RAPF Body-sway characteristics in each age-stage differ, and differences Of postural-sway frequency are marked in the low frequency bands.