Margulies J Y, Simkin A, Leichter I, Bivas A, Steinberg R, Giladi M, Stein M, Kashtan H, Milgrom C
J Bone Joint Surg Am. 1986 Sep;68(7):1090-3.
The effect of intense physical training on the bone-mineral content of young adults who are unaccustomed to physical activity has not yet been established. In this study, 268 male recruits, eighteen to twenty-one years old, were evaluated before and after fourteen weeks of strenuous physical training. The bone-mineral content of both legs at the level of the distal third of the tibia in each individual was measured using single-beam photon absorptiometry. The subjects started their training with equal values for bone-mineral content in both legs. During the training period, the average bone-mineral content of the left leg increased by 11.1 per cent and that of the right leg, by 5.2 per cent. In the group of subjects who did not complete the training course, mainly because they incurred stress fractures, the increase in bone-mineral content was significantly less than the increase in those who completed the program. This study indicated that in young adults a high level of loading of bone results in either a stress fracture or a rapid increase in bone-mineral content.
高强度体育训练对不习惯体育活动的年轻人骨矿物质含量的影响尚未确定。在本研究中，对268名年龄在18至21岁的男性新兵进行了为期十四周的高强度体育训练，训练前后均进行了评估。使用单束光子吸收法测量每个人胫骨远端三分之一水平处双腿的骨矿物质含量。受试者开始训练时双腿的骨矿物质含量相等。在训练期间，左腿的平均骨矿物质含量增加了11.1%，右腿增加了5.2%。在未完成训练课程的受试者组中，主要是因为他们发生了应力性骨折，其骨矿物质含量的增加明显低于完成训练的受试者。这项研究表明，在年轻人中，高水平的骨骼负荷会导致应力性骨折或骨矿物质含量迅速增加。
