数据日期 2026-10-29 · 生成时间 2026-10-29 06:03
研究问题
Although exercise snacks have attracted growing interest as an alternative way of accumulating physical activity, their associations with sarcopenia prevalence and long-term survival remain unclear.
方法
The NCHS Research Ethics Review Board approved the survey protocol (NHANES 2011–2012: Protocol #2011–17; NHANES 2013–2014: continuation of Protocol #2011–17), and written informed consent was obtained from all participants.；Participants were included if they: (1) were adults with valid sarcopenia-related assessment data; (2) had complete and valid physical activity data from the ActiGraph accelerometer; and (3) provided complete information for essential covariates.；A total of 19,931 participants were initially identified.
核心结论
A total of 2,969 participants were included in the present study, with a mean age of 66.61 years; 1,495 (51%) were men and 1,474 (49%) were women.；In the fully adjusted model (Model III), each additional unit per day of MIMS-ES was associated with an 8% reduction in the odds of sarcopenia (OR = 0.92, 95% CI: 0.88, 0.96).；When the exposure was expressed as time spent on exercise snacks, each additional minute per day of Time-ES corresponded to a 9% reduction in the odds of sarcopenia (OR = 0.91, 95% CI: 0.88, 0.96). ‖ 结论：Our findings indicate that higher levels of exercise snacks were associated with a lower prevalence of sarcopenia, greater handgrip strength, and lower all-cause mortality.
局限
Finally, the substantial reduction from the initial NHANES sample to the final complete-case analytic sample may have introduced selection bias and reduced representativeness.
对本项目的价值
★★★☆☆ 干预证据决定参照标准效应量——任何抗衰干预的收益至少应对标该基线。队列：NHANES；最大样本量约 19,931；设计 RCT、横断面。
全文来源
PMC JATS 全文（正文 31,504 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Associations of exercise snacks with sarcopenia and all-cause mortality: A national cohort study.
- 期刊与标识：Biol Sport · PMID 42948631 · DOI 10.5114/biolsport.2026.163369**
A 级证据分级：A 级（同行评议人体研究）
本文属人体研究证据，但需注意：观察性或小样本干预的结论不等于已证实临床获益；效应量与长期安全性仍需更大规模、更长随访的试验验证。
关于本文的文献来源：本站依据 IMA 知识库「五刊监控·深度文献卡片」撰写，依据已获取的期刊全文（方法、样本量与结论已回到原文核对）；未能获取全文的同批条目另行标注「摘要级」，全程未做任何数值推算补全。