身体活动中性别差异对儿童和青少年时期特定部位的骨矿物质密度产生剂量反应影响
Shengrong Ouyang1, Dingding Cao1, Yan Yin2
1Department of Biochemistry and Immunology, Capital Institute of Pediatrics, Beijing, China.
Scientific reports
|May 16, 2025
概括
身体活动 (PA) 对男孩和女孩的骨矿物质密度 (BMD) 有不同的影响. 男孩显示线性增长,而女孩受益于达到特定的PA体积和强度值,以获得最佳的骨健康.
科学领域:
- 整形外科和运动医学
- 儿科内分泌学 儿科内分泌学
- 公共卫生 公共卫生
背景情况:
- 身体活动 (PA) 是影响生长过程中骨矿物质密度 (BMD) 的关键因素.
- 了解PA和BMD之间的性别和特定位置的剂量反应关系对于优化骨健康至关重要.
- 目前关于儿童和青少年这些特定关系的知识仍然有限.
研究的目的:
- 在儿童和青少年中调查加速计衍生的PA (体积和强度) 与特定部位的BMD之间的性别相关联.
- 定义PA和BMD的剂量反应关系,包括线性和非线性模式.
- 为促进青年骨健康的公共卫生战略提供信息.
主要方法:
- 使用来自国家健康和营养检查调查 (NHANES 2011-2014) 的数据进行横截面研究.
- 包括2659名8-19岁的儿童和青少年.
- 通过双能X射线吸收度和PA使用监视器独立的运动总结单位 (MIMS) 评估BMD.
主要成果:
- 男孩在承重部位 (骨盆,手臂,腿) 上显示出PA体积和BMD之间的更强的线性关联.
- 女孩显示PA体积的非线性值 (15.0 × 10^3MIMS/天).
- 两种性别都有强度值 (~45-49MIMS/分钟),超过这些水平的回报率下降;男孩每次SD增加PA强度的BMD增长更高.
结论:
- PA-BMD的关系是性别和特定地点的,举重活动显示出更强烈的关联.
- 优先考虑高强度,举重活动是很重要的,特别是对于女孩来说,以最大限度地提高BMD.
- 公共卫生干预措施的目标应该是达到确定的每日强度值,而不是超过它们.
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