Bone mineral density in elite 7- to 9-yr-old female gymnasts and swimmers
Bone mineral density in elite 7- to 9-yr-old female gymnasts and swimmers
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DOI：
10.1097/00005768-199610000-00006
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发表时间：
1996-10-01
期刊：
影响因子：
--
通讯作者：
Specker, B
中科院分区：
文献类型：
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作者：
Cassell, C;Benedict, M;Specker, B
有人建议，体力活动可以增加儿童的骨矿物质密度（BMD），从而预防以后患上骨质疏松症。我们研究了 14 名体操运动员、14 名游泳运动员和 17 名对照组，以调查 7-9 岁女孩参加不同类型的运动是否与较高的全身 BMD 相关。体操运动员比游泳运动员和对照组都轻（P = 0.001），并且与游泳运动员和对照组相比，体操运动员的身高和体重低于第 25 个百分位的比例更大。与游泳运动员和对照组相比，体操运动员的脂肪量、体脂百分比和瘦体重较少（所有 P 均小于或等于 0.05）。三组之间总体BMD与体重之间的关系存在差异（体重与运动的交互作用项，P<0.001）；体操运动员每单位体重增加的骨密度增加量高于游泳运动员和对照组。这些结果表明，高强度骨负荷活动可能会导致年轻女孩骨密度增加。
It is has been suggested that physical activity may increase bone mineral density (BMD) in children, thereby preventing development of osteoporosis later in life. We studied 14 gymnasts, 14 swimmers, and 17 controls to investigate whether participation in different types of sports among girls 7-9 yr of age is associated with higher total body BMD. Gymnasts were lighter than both swimmers and controls (P = 0.001), and a larger percent of gymnasts compared with swimmers and controls were below the 25th percentile for height and weight. Fat mass, percent body fat, and lean mass were less in gymnasts compared with swimmers and controls (all P less than or equal to 0.05). The relationship between total body BMD and body weight differed among the three groups (interaction term of weight and sport, P < 0.001); the increase in BMD per unit increase in body weight was more among gymnasts than among swimmers and controls. These results indicate that high impact bone loading activities may lead to increased bone density among young girls.