加速度计衍生的每日冲击分数与青少年时期的骨强度积累有积极的关联
Christina J Alexander1, Heather M Macdonald2, Heather A McKay2
1Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada; Biomedical Engineering Graduate Program, Schulich School of Engineering, University of Calgary, Calgary, AB, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Bone
|November 17, 2025
概括
新的加速度计指标,如每日冲击得分 (DIS),更好地捕捉身体活动.
科学领域:
- 骨生物学和生物力学
- 儿童体育活动评估儿童体育活动评估
- 骨质疏松症的研究研究.
背景情况:
- 青少年骨发育对于终身骨健康至关重要.
- 加速度计测量身体活动 (PA),但常见的指标可能过于简化数据.
- 新的加速度计指标可以更深入地了解PA对骨的影响.
研究的目的:
- 调查是否新的加速度计指标,强度梯度 (IG) 和每日冲击分数 (DIS),解释PA与青少年骨强度积累的关系.
- 将IG和DIS的有效性与传统的PA指标 (充满活力的PA分钟) 进行比较.
主要方法:
- 长度观察队列研究 (健康骨研究III) 涉及300多名儿童和青少年.
- 收集了4年的加速度计数据和高分辨率的外围定量计算断层扫描 (HR-pQCT) 以估计骨强度 (远距离骨失效负载).
- 分析了使用线性混合效应模型的关联,独立评估IG和DIS,并与强烈的体力活动 (VPA) 相联系.
主要成果:
- 强度梯度 (IG) 与骨强度没有显著关联,独立于VPA.
- 每日冲击评分 (DIS) 与骨强度有积极关联,独立于VPA.
- 传统的每天几分钟的PA指标没有显示与DIS相同的关联强度.
结论:
- 每日冲击评分 (DIS) 可能是一个比传统的基于持续时间的指标更合适的指标,用于评估身体活动对青少年骨强度的影响.
- 这一发现可以完善如何测量PA及其在关键发育时期优化骨健康中的作用.
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