A study between muscle strength and walking motion in in elderly men and women

老年男性和女性肌肉力量和步行运动的研究

基本信息

批准号：
07558137
负责人：
FUKASHIRO Senshi
金额：
$ 0.58万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07558137/
关键词：
elderly men and women walking ability training コンピュータ通信

项目摘要

Decrease in strength and atrophy of skeletal muscles with age hs been usually observed in elderly men and women. This may be due to the decreased walking ability of elderly people. It has not been clear, however, whether a cause-and-effect relationship exists between leg strength and walking ability. The purpose of the present study is to examine changes in walking style through the resistance training in elderly men and women. The nine subjects (4-male & 5-female, average 47 ye. old) who participated in this study were asked to do the resistance training for leg muscles for a period of 12 weeks. The measurements described below were carried out before and immediately after the training, to study the effects of the training. Isometric knee extension/flexion strength was measured by a Cybex machine. The style of normal walking in the sagittal plane was filmed using a video system (60 f/s). Hip, knee and ankle angles of the supporting leg were calculated in the following three phases in normal walking ; at the contact point of the heel (HC), at medium of the supporting phase (MID), and at the take-off point of the toe (TTO). Although the knee extension strength increased significantly (17%) by the training, the walking speed, the stride frequency and the stride length did not change. However, there are significant correlations between the increment of knee angles at TTO/HC phases in walking and the increment of knee extension strength. Thus, it was suggested from this result that the walking pattern involving an extended knee joint in supporting leg could be obtained by leg resistance training even in elderly men and women.Furthermore, we have examined the basic experiment on the resistance training, and suggested the possibility of the resistance training in elderly men and women.

通常在老年男性和女性中观察到骨骼肌的强度和骨骼肌的萎缩。这可能是由于老年人的步行能力降低。但是，尚不清楚腿部力量和步行能力之间是否存在因果关系。本研究的目的是通过对老年男女的抵抗训练来检查步行风格的变化。参加这项研究的九名受试者（4人和5年女性，平均47岁）被要求进行12周的腿部肌肉的阻力训练。下述测量值是在训练之前和立即进行的，以研究训练的影响。等距膝关节伸展/屈曲强度通过Cybex机器测量。使用视频系统（60 f/s）拍摄了矢状飞机中正常行走的风格。在正常行走中，在以下三个阶段中计算了支撑腿的臀部，膝盖和脚踝角；在脚后跟（HC）的接触点，在支撑阶段（中）和脚趾的起飞点（TTO）的起飞点。尽管训练的膝盖伸展强度显着提高（17％），但步行速度，步幅和步幅长度没有改变。但是，步行中TTO/HC相处的膝盖角度的增加与膝关节伸展强度的增加之间存在显着相关性。因此，从这个结果提出的是，即使在老年男女中，涉及腿部支撑腿的延伸膝关节的步行模式也可以通过腿部抵抗训练获得。Furthermore，我们已经检查了有关抵抗性训练的基本实验，并提出了在老年男女中进行抵抗力训练的可能性。