骨质疏松与运动的关系——运动员骨密度的横断面研究

拟通过对从事高强度训练８年以上的我国男女运动员骨密度（ｂｏｎｅｍｉｎｅｒａｌｄｅｎｓｉｔｙ,ＢＭＤ）值的测定和分析,获得我国运动员ＢＭＤ的有关资料。方法（１）对象：１１－６０岁有８年以上运动员中的身体健康的市级专业运动员或教练员,其中男性７９名,女性８３名,以普通健康人群（每周运动量〈３小时）作为对照进行ＢＭＤ比较。（２）方法：所有入选对象,需通过地评方式完成一份包括个中及医疗史的问卷。采用单光吸

Bone mineral density and exercises: a cross-sectional study on Chinese athletes

OBJECTIVES: To evaluate the effect of exercise to osteoporosis by bone mineral density (BMD) measurement of athelets comparing normal individuals in general population. METHODS: BMD of radium, lumber spine, and femoral neck were measured by single photon absorptiometry (SPA), quantitative CT (QCT), and dual X-ray absorptiometry (DXA) respectively in athletes (n = 162, male 79, female 83) and age matched non-athletes normal population (n = 204, male 91, female 113) in Beijing. RESULTS: BMD of all sites in all age groups of both male and female athletes are significantly higher comparing with that in non-athletic population. This predominance in athletes is even more distinctive in peak bone mass. Peak bone mass of male athletes is significantly higher than that of female athletes. Bone loss with age is less apparent in athletes than in control. However, there is an accelerated decline of BMD in lumber spine and femoral neck in 30-39 year age group in both male and female athletes, which may be due to the wanting of physical exercise. CONCLUSIONS: Long term regular proper exercise started in adolescence may play a very important role in the prevention of osteoporosis by improving peak bone mass and decreasing bone loss.