Health in old age is lower than the catabolism of assimilation, the growing recession in the body, physical training in the psychological concerns of the more unable to have the burden of the total.

• 老年阶段身体的同化作用低于异化作用，机体日趋衰退，在心理上对体育锻炼顾虑较多，总怀有力不从心的负担。