久坐不动的行为并不能预测低BMD,也不能预测基于骨折的人口的加拿大多中心骨质疏松症研究
Sigríður Lára Guðmundsdóttir1, Claudie Berger2, Heather Macdonald3,4
1School of Education, Department of Health Promotion, Sport and Leisure Studies, University of Iceland, 101 Reykjavik, Iceland.
概括
久坐不动行为 (SB) 与较低的基线骨密度有关,但这项研究发现,在10年内,坐着时间和骨损失或骨折风险之间没有关联. 长期的久坐不动习惯并没有增加骨折风险.
科学领域:
- 骨健康和骨质疏松症研究
- 流行病学和公共卫生.
- 老年学和衰老研究研究.
背景情况:
- 久坐不动行为 (SB) 与不良健康结果有关,包括对骨健康的潜在负面影响.
- 现有证据表明,久坐时间和骨矿物质密度 (BMD) 差之间存在联系.
- 缺乏基于人群的SB,骨变化和脆弱骨折的纵向数据.
研究的目的:
- 调查每日坐着时间 (久坐行为),骨矿物质密度 (BMD) 和低创伤性骨质疏松性骨折的发生率之间的纵向关联.
- 为了检查随着时间的推移,久坐行为的变化如何与骨健康和骨折风险有关,在一个大队列中.
主要方法:
- 利用了来自加拿大多中心骨质疏松症研究 (CaMOS) 的数据,其中包括5708名女性和2564名男性 (年龄25-80岁以上).
- 在基线和10年随访期间测量了自我报告的久坐行为 (坐着时间) 和面积 BMD (DXA).
- 评估了10年来发生的脆弱性骨折,医疗记录证实了80%以上;使用多变量回归和Cox比例模型分析了关系,按性别分层并根据共变量进行调整.
主要成果:
- 在基线上增加的坐着时间与女性和男性的部下部 (FN) BMD和女性的下部总部 (TH) BMD有关.
- 无论是基线还是稳定的10年久坐行为都与十年内的BMD变化无关.
- 在10年内,没有发现静坐行为 (基线或稳定) 和脆弱性骨折的发生率之间有显著的关系.
结论:
- 成年人习惯性的久坐行为与较低的基线骨矿物质密度有关,特别是在部.
- 然而,没有发现久坐不动的行为预测了随后的骨损失或增加了脆弱性骨折的风险超过10年的时间.
- 这些发现表明,虽然久坐时间可能会影响基线骨密度,但它可能不是长期骨损失或骨折发生率的主要驱动因素.
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