【摘要】 探讨青春发育期男性青少年在生长发育过程中骨密度(bonemineraldensity,BMD)值与下肢跳跃能力的关系及运动训练对其影响。对10～20岁男性青少年63名,依据年龄分为10～15岁和16～20岁组;依据是否从事规律的运动训练,再分为运动员组和非运动员组。超声法测量跟骨BMD,下肢跳跃能力指标使用日产ReboundJumping测跳仪测量。结果:男性青少年的BMD在整个青春期呈上升趋势,且10～15岁和16～20岁组BMD有显著性差异;运动组和非运动组的BMD也呈显著性差异,提示早期运动训练可以改变骨密度;男性青少年的BMD与反映下肢跳跃能力的指标具有明显相关性,且此相关度受运动训练的影响,运动训练具有正向促进作用。更多还原

【Abstract】 To know the relationship between bone mineral density and jump power of the inferior limb in male teenagers and the effect of sport training on it,63 Shanghai schoolboys aged 10-20 years were measured, and they were divided into 10-15 years group (including 26 subjects ) and 16-20 years group (including 37 subjects). Each of the group was re-divided into exercise-training group and non-exercise-training group. The values of BMD were detected by the Hologic Sahara Clinical Bone Sonometer, the jump performances were measured by the Rebound Jumping Device. results: The values of BMD show a increasing tendency during adolescence. And there are significant differences of the values of BMD between 10-15years group and 16-20 years group;The values of BMD in training groups were significant difference with the values of BMD in non- training groups,which showed exercise-training can increase the values of BMD;The index reflecting the jump power of the inferior limb has a significant correlation with the values of BMD,and sport training can affect this correlation.更多还原