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Age-related Leg-Extension Power

与年龄相关的腿部伸展力

基本信息

批准号：
09480012
负责人：
MIYASHITA Mitsumasa
金额：
$ 4.61万
依托单位：
Toyo Eiwa University, Faculty of Human Sciences
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09480012/
关键词：
isotonic dynamometer maximal power of leg extension reduction rate brisk walking エクササイズ・ウォーキング歩数

项目摘要

In the present study, a new isotonic dynamometer was used for measuring the power exerted by the leg extension, and (1) the reduction rate of the maximal power of leg extension with age, (2) the effects of training (brisk walking) on the leg extension power in the middle-aged and old persons, and (3) the minimal values of leg extension power for maintaining the ability to walk for a relatively long distance were investigated in the old persons.More than 2,000 Japanese aged from 20 to 91 years were tested. The normal distribution curves of the power in each age and sex groups were assessed by the cu-square method for normality test (P(]SY.di-substituted right.[)0.05).(1) The maximal power decreases almost linearly with age from 25.9 W/kg (20-24 years of age) to 13.5 W/kg (over 70 years of age) for males and from 14.1 W/kg to 7.3 W/kg for females, respectively. The annual reduction rate of the maximal power from 20 to 80 years of age were calculated ; 0.85% for males and 0.83% for females. These values are very similar to the generally accepted reduction rates of the physical performance and ability. (2) The gain in the maximal leg extension power through the 10-12 week training of brisk walking was on an average approximately 2-3 W/kg. (3) The minimal value of the leg extension power required for physically active living in the old persons was estimated to be 12-13 W/kg for males and 7-8 W/kg for females, respectively.

本研究采用新型等张测力计测量下肢最大伸展功率，并研究了下肢最大伸展功率随年龄增长的下降率和训练效果（快走）对中老年人腿部伸展力量的影响，（3）研究了老年人维持较长距离步行能力的最小伸腿功率值，大于2，000名年龄在20至91岁的日本人接受了测试。采用正态性检验的平方根法对各年龄组和性别组的功率的正态分布曲线进行了评估（P <0.05）。[）0.05）。(1)最大功率随年龄增长几乎呈线性下降，男性从25.9 W/kg（20-24岁）降至13.5 W/kg（70岁以上），女性从14.1 W/kg降至7.3 W/kg。计算了20 - 80岁最大功率的年下降率;男性为0.85%，女性为0.83%。这些数值与普遍接受的体能和能力下降率非常相似。(2)通过10-12周的快步走训练，最大腿部伸展功率的增加平均约为2-3 W/kg。(3)老年人进行体力活动所需的最小伸腿功率，男性为12-13 W/kg，女性为7-8 W/kg。