公共卫生 公共卫生
Marissa A Gogniat1,2, Lindsey Jorda1, Joseph Storey2
1University of Pittsburgh Alzheimer's Disease Research Center, Pittsburgh, PA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
久坐不动行为会影响老年人的认知功能,尤其是在与阿尔茨海默病生物标志物相互作用时. 较低的静坐时间与那些生物标志物水平较高的人的认知能力更好有关,而较高的静坐时间有利于那些生物标志物水平较低的人.
科学领域:
- 老年学是指老年学的学科.
- 神经科学是一个神经科学.
- 认知科学 认知科学
背景情况:
- 久坐不动的行为在老年人中很常见,并且与不良健康结果有关,包括痴呆风险.
- 老年人的久坐行为和认知功能之间的关系尚未完全被理解,结果各不相同,神经生物学机制不清楚.
- 这项研究调查了久坐不动行为和阿尔茨海默病 (AD) 生物标志物之间的相互作用,用于预测非痴呆老年人的认知功能.
研究的目的:
- 为了检查静坐行为如何与阿尔茨海默病 (AD) 生物标志物 (粉样蛋白-β和) 相互作用,以影响老年人的认知表现.
- 探索在衰老中静坐行为和认知之间的关联背后的神经生物学机制.
- 为了确定AD生物标志物水平是否会改变久坐行为和认知结果之间的关系.
主要方法:
- 来自匹兹堡大学ADRC临床核心的41名老年人的子集与加速计和PET成像数据进行了分析.
- 使用Fitbit Inspire 3测量了久坐不动的行为,通过神经心理测试测量认知功能,使用PET成像测量了AD生物标志物 (粉样β,tau).
- 适度模型被用来评估久坐行为和AD生物标志物之间对认知结果的相互作用,并根据人口因素进行调整.
主要成果:
- 久坐不动的行为与全球粉样蛋白负担有显著的相互作用,影响了字母流性,语言复合和复杂的注意力.
- 久坐不动的行为也与超时的tau负担相互作用,影响对抗命名.
- 具体来说,较长的静坐时间与低粉样β和tau负担的个体的更好的认知相关,而较低的静坐时间与高生物标志物负担的个体的更好的认知相关.
结论:
- 久坐不动的行为和AD生物标志物相互作用,影响老年人的认知表现.
- 阿尔茨海默病生物标志物负担的水平对于理解久坐行为对认知影响的方向性至关重要.
- 这些发现强调了修改久坐行为的重要性,特别是在患有阿尔茨海默症生物标志物风险较高的老年人中.
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