论文部分内容阅读
机械性负荷与骨塑型之间的关系已经明确.动物实验研究证明骨的生长受机械性负荷的影响。此外,在生理范围内.肯定地说骨的塑型与负荷水平和应变程度有关.应力的改变及其每天的重复次数达到一定限度,也可增强骨的塑型.同样地,人类骨质(作为骨塑型的一种测量方法)的改变,也与体力活动有关。长期卧床或缺乏重力作用,骨无机质的含量便会随之减少。另一方面,在运动员和终生从事体力劳动的人中骨质增加。以前没有体力活动习惯,仅从事数月体力活动者,骨无机质含量很少增加或根本不增加.本文研究对象是一些青年人,他们进行了短期的强体力活动.由于这一活动的主要负荷在下肢,故将胫骨干远端部分的骨无机质含量选作骨塑型的参数。这一研究的目的在于评价活动对这一部位骨无机质含量的影响。
The relationship between mechanical load and osteoplasticity has been established.Experimental animal studies have shown that bone growth is affected by mechanical loading. In addition, within the physiological range, it is certain that the shape of the bone is related to the level of load and the degree of strain. Stress changes and the number of repetitions per day reach a certain limit, but also enhance the plasticity of the bone. Similarly, human bone mass As a measurement of osteoplastic type) changes, but also with physical activity. Bedridden or lack of gravity, bone mineral content will be reduced. On the other hand, there is an increase in bone mass among athletes and those who are physically engaged throughout their lives. In the past, there was no habit of physical activity, only few months of physical activity, little or no increase in bone inorganic content.This study is targeted at young people, they carried out short-term physical activity.Because of the main load of this activity In the lower extremities, the bone mineral content of the distal part of the tibia shaft is selected as the parameter of the bone type. The purpose of this study was to evaluate the impact of activity on the bone and mineral content of this area.