However , a positive osteogenic effect depends on sufficient stimulation provided in terms of the intensity of the exercise workload , duration of the exercise , frequency of training , length of the training period , and site affected by the physical activity 大體上,阻力運(yùn)動(dòng)訓(xùn)練、承重型的耐力訓(xùn)練、甚至于日常步行訓(xùn)練均有助于減緩骨質(zhì)流失的速度,然而欲得到足夠的骨骼刺激效果仍需視所采用的運(yùn)動(dòng)型態(tài)與運(yùn)動(dòng)量而定,而且養(yǎng)成長(zhǎng)期持續(xù)運(yùn)動(dòng)的習(xí)慣才能確保正面效果的維持。