Effects of high-impact exercise on bone strength evaluation of three dimensional structural analysis

过去经常参加体育运动的机械应力的总和估计为OI为63名年轻女性和79名年轻男性。统计分析显示，在女性中，与青春期后组相比，青春期前和青春期早期的定期体育活动对骨强度参数（包括骨几何结构）的影响似乎更大。另一方面，男性没有表现出这种倾向。我们还发现，在绝经后的96名中年妇女中，不仅年轻时经常锻炼，而且20岁以后经常锻炼可能有助于保持骨强度。

The sum of mechanical stress by the past regular sports participation was estimated as OI for 63 young females and 79 young males. The statistical analysis revealed that in female, the effects of regular sporting activities before and in early puberty appeared to have a greater effect on bone strength parameters including bone geometry compared to the after puberty groups. On the other hand, males did not show this tendency. We also found that in postmenopausal 96 middle-aged women, not only regular exercise during youth, but also regular exercise after the age of 20 may help to maintain the bone strength.