著者

中田 征克 出村 慎一 出村 友寛 山本 裕太 内山 応信 福留 彰教 田島 東海男

出版者

神奈川体育学会

雑誌

Journal of Kanagawa Sport and Health Science (ISSN:24367249)

巻号頁・発行日

vol.41, pp.1-4, 2008 (Released:2022-03-05)

参考文献数

15

---

This study aimed to examine the relationships between changes in the center of foot pressure (COP) during the static one leg standing posture and in the balance test on one leg with eyes closed. Subjects consisted of 51 healthy young males (height 173.1±4.3cm, body weight 66.9±5.9kg, and age 21.1±1.5years). Four COP factors were interpreted by applying factor analysis to a correlation matrix consisting of 32 parameters representing the 6 domains of distance, distribution of amplitude, area, velocity, power spectrum, and body sway vector which were used to evaluate COP sway. Unit time sway factor (F1) reflects movement distance (sway velocity) per unit time. Front-back sway factor (F2) and left-right sway factor (F3) reflect the amount of front-back sway and the amount of left-right sway, respectively. The high frequency band power factor (F4) reflects high frequency sway. The COP during the one leg standing posture for 90 sec was divided into three intervals (first interval : 0-30 sec, second interval : 30-60 sec, and third interval : 60-90 sec). F1 and F2 factors during the first interval were significantly higher than during the second and third intervals. The increase in front-back body sway may contribute to the ability to hold postural stability just after the front elevation of the right leg. F3 and F4 factors tended to increase with time. The duration time of balancing on one leg with eyes closed showed insignificant correlation with COP factors (F1-F4) in all intervals. COP factors may not be involved in balancing on one leg with eyes closed.