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骨骼系统是人体的支架,也是运动器官重要的组成部分。早在1941年Albnight就首先报导缺乏体力活动会影响骨中无机盐沉积,易形成骨质疏松症。以后又有人证明,运动还可以逆转骨质疏松症。缺乏运动、长期卧床,将使尿钙排出量增加,即使减少饮食中含钙量,也不能防止钙的排出量增多。其原因是缺乏重力应力对骨骼系统的作用,使骨的吸收率大于成骨速率。近些年来又发现过量的运动又会使人体内性激素分泌量减少而削弱骨骼系统。长时期持续运动,可以使运动员或健康的非运动员尿钙排出量增加20%—30%。绝
The skeletal system is a human body scaffold and is also an important part of the moving organ. As early as 1941 Albnight first reported that lack of physical activity will affect the deposition of inorganic salts in bone, easy to form osteoporosis. Someone later proved that exercise can also reverse osteoporosis. Lack of exercise, bedridden, will increase urinary calcium excretion, even reducing the amount of calcium in the diet, but also can not prevent the increase in calcium excretion. The reason is the lack of the role of gravity stress on the skeletal system, the bone absorption rate greater than the rate of osteogenesis. In recent years, it has been found that excess exercise can reduce the body’s secretion of sex hormones and weaken the skeletal system. Long-term continuous exercise, can make athletes or healthy non-athletes urinary calcium excretion increased by 20% -30%. Absolutely