年龄和轻度认知障碍对举重时的姿势控制的影响
Tippawan Kaewmanee1, Huaqing Liang2, Katya Y Cruz Madrid3
1Department of Physical Therapy, Faculty of Medicine, Prince of Songkla University, Hat Yai Songkhla, Thailand.
Experimental brain research
|January 24, 2026
概括
年轻人通过有效的预测性 (APA) 和补偿性 (CPA) 姿势调整在举重过程中保持平衡. 老年人,特别是那些有轻度认知障碍 (MCI) 的人,表现出APA效率降低和适应速度较慢,MCI个体表现出夸张但不太精确的运动.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 老年学是一门学科.
背景情况:
- 举起物体需要预期 (APA) 和补偿 (CPA) 的姿势调整来保持平衡.
- 老龄化会影响APA的产生,并增加对CPA的依赖.
- 轻度认知障碍 (MCI) 对举重过程中的姿势控制的影响尚不清楚.
研究的目的:
- 为了研究年龄和MCI对站立双手举重任务中的姿势调整的影响.
- 为了比较年轻成年人,没有MCI的老年人和MCI的老年人之间的姿势控制策略.
主要方法:
- 参与者包括年轻人 (YAH),健康的老年人 (OAH) 和患有MCI (OAMCI) 的老年人.
- 干部和下肢肌肉的表面电肌图 (EMG) 和压力中心 (COP) 数据是在两次举起不同负载时收集的.
- 分析重点是APA和CPA阶段和COP移位期间的EMG整数,以及适应速度的变化点分析.
主要成果:
- 与老年人相比,年轻成年人表现出明显更高的APA肌肉活动和预期COP反应,特别是在重到轻负荷的过渡期间.
- 患有MCI的老年人显示,在轻到重的过渡过程中,小腿前部激活减少,但在重到轻的过渡过程中,后部和侧部肌肉的APAs过分.
- 年轻的成年人比两组老年人更快地适应负载变化;OAMCI显示过度但不太针对性的APA模式.
结论:
- 老化和MCI不同地影响起重过程中APA和CPA的调节.
- 年轻的成年人表现出高效的缩放和快速适应姿势控制.
- 老年人表现出预期效率降低和更慢的调整,MCI与受损的APA策略选择有关.
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