Effects of physical activity and body awareness on stability of body movement and muscle power output in frail elderly and physically disabled children.

为了考察体力活动和身体对运动可能性的意识对体弱老年和肢体残疾儿童的身体运动稳定性和肌肉功率输出的影响，我们进行了以下一系列测量：1.使用动作捕捉系统评估脑瘫儿童创造性舞蹈表达过程中身体运动的重复性。精确再现的结果清楚地显示了通过追踪肢体残疾儿童的身体节段来评价这种身体运动的可能性。2.在最大伸膝力量组、最大步行速度组和2种横杆清除试验组中，考察了15名住院老人的身体素质与身体意识的关系，并与年龄匹配的当地常住老人进行了对比。体弱老年人的肌力和步行速度明显低于当地居民。在虚弱的老年人，尤其是脑血管疾病所致的偏瘫患者中，杆条清除试验中目测与实际试验的差异较大。在这些虚弱的老年人中，随着身体活动量的减少，不仅身体素质下降，而且对运动能力的身体意识似乎也有所下降。3.比较脑瘫儿童和非残疾儿童在次最大自主收缩时肌电和机械肌电输出的稳定性。脑瘫儿童在这些肌肉生理指标上表现出不同的趋势，但与以往的研究相比有一些显著的差异，需要开发更合适的测量情境来阐明体力活动和肢体残疾的影响。此外，必须进行干预研究，以确定肢体残疾儿童的这些特性。

To examine the effects of physical activity and body awareness of movable possibility on stability of body movement and muscle power output in frail elderly and physically disabled children, we conducted a series of measurements as follows ;1.Reproducibility of body movement was assessed by using Motion Capture System in cerebral palsy child during her creative dance expression. The precisely reproduced result clearly showed the possibility of evaluation for this kind of body movement by tracing body segment in physically disabled children.2.Relations of physical fitness and body awareness were examined in institutionalized 15 flail elderly in contrast to age-matched local resident elderly in teams of maximal knee extension strength, maximal walking velocity and 2 types of bar clearance test. Muscle strength and walking velocity of frail elderly were significantly lower than those of local resident. The discrepancy between visual inspection and actual trial during bar clearance test was larger in frail elderly, especially in such patients as hemiplegia induced by cerebrovascular diseases. In these frail elderly not only physical fitness but also body awareness of movable ability seemed to be deteriorated with decrease of physical activity.3.Stability of muscle power out put of cerebral palsy children was compared with non-disabled children in terms of electromyogram and mechanomyogram during submaximal voluntary contraction. CP children showed a tendency of being different in these muscle physiological measures, however, some notable discrepancies were observed compared to previous studies and it must be needed to develop more suitable measurement situation for clarifying the effects of physical activity and physical disability. Also, the intervention study must be needed to ascertain these properties in physically disabled children.