The ACUte effects of SITting time on physiological and psychological function in older adults (ACUSIT): An observational cohort study
· 2026-09-09 · 原文
DOI：10.64898/2026.09.08.26362486v1?rss=1预印本：medRxiv开放获取：绿色OA
Introduction: There is accumulating evidence supporting the longer-term detrimental health effects of prolonged bouts of sedentary behaviour (sitting). There is however limited data for acute doses of sitting in older adults. This study aimed to identify key physiological and psychological outcomes influenced by acute periods of inactivity. Methods: Using a randomised cross-over design, participants completed sitting times of 1, 2 and 4 hours on separate days at the same time of day, and were permitted to watch television, knit or read but not to sleep. The sitting times corresponded to a brief control period of sitting (1 hour (h)), moderately sedentary (2-4 h per day) and sedentary (>4 h per day). The primary outcome measure was lower limb power output using the Nottingham Power Rig (Wat
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1. 人话版
Introduction: There is accumulating evidence supporting the longer-term detrimental health effects of prolonged bouts of sedentary behaviour (sitting).
There is however limited data for acute doses of sitting in older adults.
2. 领域脉络
This study aimed to identify key physiological and psychological outcomes influenced by acute periods of inactivity.
3. 机制拆解
摘要未展开方法细节——精读时重点看方法/模型部分。
4. 证据与数字
Methods: Using a randomised cross-over design, participants completed sitting times of 1, 2 and 4 hours on separate days at the same time of day, and were permitted to watch television, knit or read but not to sleep.
The sitting times corresponded to a brief control period of sitting (1 hour (h)), moderately sedentary (2-4 h per day) and sedentary (>4 h per day).
5. 反例与边界
摘要未声明局限与反例——这是需要警惕的信号，精读时先问边界。
6. 跨领域连接与意外收获
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7. 可复用方法
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8. 术语表
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