从大脑到心脏:认知表现塑造了老年人的运动诱导的心脏自主轨迹
Paulina Sepúlveda-Figueroa1, Matías Castillo-Aguilar2,3, Alexis Sepúlveda-Lara4
1Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad de La Frontera, Temuco, Chile.
具有更好的认知功能的老年人在休息时表现出更健康的心率变化 (HRV),并在运动期间改善了自主灵活性. 这表明HRV对功能测试的反应可能表明衰老中的认知健康.
科学领域:
- 老年学是一门学科.
- 神经科学是一个神经科学.
- 心脏病学 心脏病学
背景情况:
- 自主功能障碍和认知能力下降在衰老中很常见.
- 以前的研究主要使用静止心率变化 (HRV).
- 在活动期间认知表现和动态HRV反应之间的关系不太清楚.
研究的目的:
- 调查全球认知表现是否影响老年人功能性运动测试期间动态HRV反应.
- 探索在休息,运动和恢复期间认知状态和自主神经系统调节之间的关联.
主要方法:
- 这是一项涉及104名年龄在60-85岁之间的成年人的横截面研究.
- 参与者进行了2分钟的步骤测试,其中包括休息-运动-恢复阶段.
- 全球认知被评估使用阿登布鲁克的认知检查.
- 从极地H10记录中分析了短期HRV,副交感 (PNS),交感 (SNS) 指数和贝夫斯基压力指数.
- 层次贝叶斯回归模型被用来分析HRV轨迹与认知表现相关,调整身体质量指数.
主要成果:
- 更高的认知分数与更健康的休息自主特征相关 (例如,正常至正常间隔的标准偏差更高,SNS更低).
- 更好的认知与运动期间增强的自主灵活性有关,这表明更高的高频功率和降低的低/非常低频功率.
- 较低的认知分数与形HRV轨迹和运动期间PNS急剧下降有关.
- 较高的体重指数始终与减少的阴道调节和增加的交感标志物有关.
结论:
- 具有卓越认知功能的老年人表现出更健康的休息自主功能和更大的心脏自主调节在体育活动期间的适应性.
- 在认知能力较低的个体的功能测试中,HRV响应减弱可能表明潜在的神经生理脆弱性.
- 在2分钟步骤测试期间的HRV分析可以作为评估老龄人口认知健康的非侵入性生物标志物.
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