上肢和下肢力量的独立或并发下降以及认知障碍之间的关联
Shu-Li Jia1, Mei-Ling Ge1, Wan-Yu Zhao1
1The Center of Gerontology and Geriatrics, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, Sichuan Province, 610041, China.
BMC geriatrics
|January 6, 2026
概括
肌肉力量下降,特别是下肢或两肢的肌肉力量下降,显著增加了认知障碍 (CI) 的风险. 监测四肢强度对于早期CI风险识别至关重要.
科学领域:
- 老年学是指老年学的学科.
- 神经学 神经学
- 运动学 运动学
背景情况:
- 骨肌肉强度的下降是已知的认知障碍 (CI) 的相关因子.
- 关于上肢和下肢联合强度下降和CI风险的纵向数据有限.
- 这项研究调查了四肢强度变化对未来认知能力下降的影响.
研究的目的:
- 检查两年内上肢和下肢肌肉强度的变化与随后的认知障碍风险之间的关联.
- 为了区分孤立与并发四肢力量下降对认知健康的影响.
- 根据肌肉力量轨迹,识别具有较高认知障碍风险的个体.
主要方法:
- 来自中国健康与退休长度研究的2,443名参与者 (≥60岁) 的分析.
- 评估手握 (上肢) 和椅子上升时间 (下肢) 强度在基线和2年随访.
- 认知功能测量在随后的几年;参与者按力量变化分类 (稳定-两者,上方仅下降,下方仅下降,下降-两者).
- 离散时间的考克斯回归用于分析肌肉强度状态和事件CI之间的关联.
主要成果:
- 在两年内,60.6%的股票表现稳定强度,18.2%的股票表现上方下降,16.0%的股票表现下方下降,52%的股票表现下降.
- 事件CI发生在平均5.73年随访期间的19.65%.
- 下肢强度下降 (HR=1.62) 和两只四肢的下降 (HR=1.80) 显著增加了CI风险.
- 这些关联在排除基线疲软后仍然显著,在男性中更为明显.
结论:
- 下肢力量的下降,或上肢和下肢力量的下降,增加了未来认知障碍的风险.
- 这种风险存在,无论最初的肌肉强度水平如何.
- 对上肢和下肢力量的动态监测对于早期检测易患认知衰退的个体至关重要.
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