身体活动和久坐行为与老年妇女骨质疏松症的关系:剂量反应分析
Frontiers in public health
|February 16, 2026
概括
减少静坐行为 (SEB) 和增加体力活动 (PA),特别是中度至剧烈的体力活动 (MVPA),显著降低了老年妇女的骨质疏松症风险. 即使是短暂的MVPA爆发也提供了相当大的保护.
科学领域:
- 老年学是指老年学的学科.
- 公共卫生 公共卫生
- 运动生理学 运动生理学
背景情况:
- 骨质疏松症是老年妇女的重大健康问题,受日常久坐行为 (SEB) 和体力活动 (PA) 水平的影响.
- 了解SEB和PA的不同强度和持续时间与骨质疏松症风险之间的关系对于预防策略至关重要.
研究的目的:
- 调查SEB,轻度体力活动 (LPA) 和中度至强度体力活动 (MVPA) 与老年女性骨质疏松症风险之间的剂量反应关系.
- 评估SEB和不同PA强度之间重新分配时间对骨质疏松症风险的影响,使用异时代替代分析.
主要方法:
- 在天津,一群1106名60-70岁的社区妇女参加了这项研究.
- 使用加速度计对 SEB,LPA 和 MVPA 的客观评估.
- 采用二元逻辑回归和同时代替代模型来分析活动模式与骨质疏松症之间的关联.
主要成果:
- 与没有骨质疏松症的女性相比,患有骨质疏松症的女性表现出明显更高的SEB和较低的LPA和MVPA.
- 增加SEB持续时间和发作频率与骨质疏松症风险有积极的相关性.
- 增加LPA和MVPA,特别是MVPA,与骨质疏松症风险降低有显著关联.
- 同时代体替代分析表明,用MVPA取代SEB在降低骨质疏松症风险方面最有效.
结论:
- 身体活动模式和久坐不动的行为显示,与老年妇女的骨质疏松症有显著的剂量反应关系.
- 减少长时间的坐着时间和增加整体PA持续时间提供了对骨质疏松症的保护作用.
- 达到足够的中度至剧烈的体力活动水平是预防骨质疏松症在这个人口群体中最有效的策略.
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