Slemenda C W, Johnston C C
Indiana University School of Medicine, Department of Medicine, Indianapolis 46202.
Bone Miner. 1993 Feb;20(2):125-32. doi: 10.1016/s0169-6009(08)80021-9.
We compared young female figure skaters, aged 10-23, with non-athletic control subjects to ascertain whether there were differences in skeletal densities at various sites. We also compared other characteristics of body size, including height, weight and percent body fat. Although the skaters were thinner and significantly more likely to have oligo- or amenorrhea, they had similar skeletal densities at upper body sites (spine, arms, ribs) and significantly greater densities in the pelvis and legs. These differences were not evident until the mid-teens, however, suggesting that there is little likelihood of selection bias as the cause of the observed differences.
我们将10至23岁的年轻女性花样滑冰运动员与非运动员对照受试者进行比较，以确定不同部位的骨骼密度是否存在差异。我们还比较了身体大小的其他特征，包括身高、体重和体脂百分比。尽管花样滑冰运动员身材更瘦，而且明显更易出现月经过少或闭经，但她们上半身部位（脊柱、手臂、肋骨）的骨骼密度相似，而骨盆和腿部的骨骼密度则明显更高。然而，这些差异直到青少年中期才显现出来，这表明观察到的差异几乎不可能是由选择偏倚导致的。
