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The Relationship between Physical Activity and Bone during Adolescence Differs according to Sex and Biological Maturity

机译:性别和生物成熟度不同青春期运动与骨骼的关系

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摘要

This study examines the relationships between bone mass, physical activity, and maturational status in healthy adolescent boys and girls. Methods. Ninety-nine early high-school (Year 9) students were recruited. Physical activity and other lifestyle habits were recorded via questionnaire. Anthropometrics, muscle power, calcaneal broadband ultrasound attenuation (BUA), bone mineral content (BMC), and lean tissue mass were measured. Maturity was determined by Tanner stage and estimated age of peak height velocity (APHV). Results. Boys had greater APHV, weight, height, muscle power, and dietary calcium than girls (P < .05). Boys exhibited greater femoral neck BMC and trochanteric BMC while girls had higher BUA and spine BMAD (P < .05). Physical activity and vertical jump predicted BMAD and BUA most strongly for boys whereas years from APHV were the strongest predictor for girls. Conclusion. Sex-specific relationships exist between physical activity, maturity and bone mass during adolescence.
机译:这项研究检查了健康的青春期男孩和女孩的骨量,体育活动和成熟状态之间的关系。方法。招募了99名初中(9年级)学生。通过问卷记录体育锻炼和其他生活方式。测量人体测量学,肌肉力量,跟骨宽带超声衰减(BUA),骨矿物质含量(BMC)和瘦组织质量。成熟度由Tanner阶段和峰高速度(APHV)的估计年龄确定。结果。男孩比女孩的APHV,体重,身高,肌肉力量和饮食中的钙含量更高(P <.05)。男孩的股骨颈BMC和股骨转子BMC较大,而女孩的BUA和脊柱BMAD较高(P <.05)。身体活动和垂直跳跃对男孩的BMAD和BUA预测最强,而从APHV开始的年份对女孩的预测最强。结论。青春期期间,身体活动,成熟度和骨量之间存在特定性别的关系。

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