生物标志物 生物标志物
Joanna L Eckhardt1, A Lisette Isenberg1, Teresa Monreal2
1Alzheimer's Disease Cooperative Study (ADCS), University of California, San Diego, La Jolla, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
六个月的适度有氧步行改善了认知障碍的老年人昼夜节律的强度和时间. 这种运动干预提供了一种有希望的生活方式策略,可以改善大脑健康,并可能降低阿尔茨海默病的风险.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 时间生物学 时间生物学
背景情况:
- 阿尔茨海默病 (AD) 的风险和进展可以通过生活方式干预,如运动和昼夜疗法来减轻.
- 研究6个月的有氧运动计划对早期认知障碍的老年人昼夜节律的影响对于了解潜在的AD预防策略至关重要.
研究的目的:
- 为了检查6个月的适度有氧运动如何影响客观早期认知障碍的久坐老年人的昼夜节律 (幅度,MESOR,M10开始时间).
- 为了比较有氧步行与健康生活方式教育对照组对昼夜节律参数的影响.
主要方法:
- 利用了来自神经科学干预试验研究生活方式丰富活动 (LEARNit) 早期认知障碍的55名久坐不动的老年人 (年龄55-79岁) 的纵向数据.
- 参与者被随机分配到150分钟/周的中度有氧步行 (n=29) 或健康生活方式教育对照组 (n=26) 6个月.
- 循环节律参数,包括振幅,中线节律估计统计 (MESOR) 和M10开始时间,从加速度计数据中提取,使用R中的GGIR,ActCR和nparACT软件.使用ANCOVA分析了变化,根据年龄,性别和APOE4载体状态进行调整.
主要成果:
- 有氧运动组在MESOR (p=0.0010) 和振幅 (p=0.018) 均显著增加,这表明与对照组相比,生理节律强度有所提高.
- 在运动组中观察到较晚的M10开始时间的显著转变 (p=0.036),表明节奏时间延迟.
- 在调整年龄,性别和APOE4载体状态后,这些发现是稳定的.
结论:
- 6个月的适度有氧步行计划显著改善了早期认知障碍的久坐老年人的昼夜节律强度 (MESOR和幅度) 和转移节律时间 (M10开始时间).
- 有氧运动,特别是适度的步行,代表了一种可行的生活方式干预措施,以提高这一群体的昼夜调节.
- 这些结果支持运动在促进健康衰老和潜在地减轻神经退行性疾病风险方面的作用,例如阿尔茨海默病.
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