肌肉特异性强度比传统指标更好地预测身体表现下降:I-Lan纵向衰老研究
Wen-Kai Chien1, Wei-Ju Lee1,2,3, Chih-Kuang Liang2,4
1Institute of Hospital and Health Care Administration, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Journal of cachexia, sarcopenia and muscle
|October 1, 2025
概括
肌肉特异性强度 (MSS) 是老年人肌肉健康的更好指标,预测身体衰退和不良代谢概况. 与传统措施相比,这项指标可能会改善肉症的评估.
科学领域:
- 老年学和老年医学是老年学和老年医学.
- 肌肉生理学和衰老的过程
- 代谢健康和生物标志物
背景情况:
- 肌肉特异性强度 (MSS),将握力正常化为手臂肌肉质量,可能比单独的握力更准确地反映肌肉效率.
- 有限的纵向研究存在于MSS作为社区居住的老年人中与肉症相关的预测结果的预测因素.
- 这项研究旨在评估MSS与身体表现,生物标志物概况的关联,以及MSS对肉类的预测效用.
研究的目的:
- 研究肌肉特异性强度 (MSS) 与老年人身体性能恶化和生物标志物概况的关联.
- 为了比较MSS定义的肉病与传统诊断标准的预测效用.
- 检查MSS与关键心脏代谢和炎症生物标志物之间的关系.
主要方法:
- 来自I-Lan纵向衰老研究中的1609名社区老年人 (平均年龄64.5岁) 的前性队列研究.
- 肌肉特异性强度 (MSS) 计算为握力除以主导手臂肌肉质量;参与者分为低/正常的MSS组.
- 通过五次椅子站测试评估身体表现;用于分析MSS和身体表现受损 (PPI) 之间的关联的后勤回归.
主要成果:
- 低MSS (19.9%的参与者) 与较高的肌肉质量但较弱的握力有关,这表明相对于肌肉大小的强度不成比例.
- 低MSS组 (47.8%对29.0%) 的身体表现下降 (PPI) 较为常见,低MSS显著预测了PPI的更高几率 (调整后OR=1.49).
- 低MSS个体表现出不良的代谢特征 (更高的禁食葡萄糖,HbA1c,HOMA-IR) 和与hsCRP升高的关联;MSS定义的肉症显示出更强的PPI预测 (OR=3.31).
结论:
- 低肌肉特异性强度 (MSS) 独立预测身体性能恶化,并与老年人不良的代谢和炎症生物标志物概况有关.
- 与传统指标相比,MSS可以作为肌肉健康的优秀指标.
- 这些研究结果支持将MSS纳入皮病评估框架,与最近的共识指南保持一致.
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