时间标签：数据日期 2026-10-31 · 生成时间 2026-11-01 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/10/28–2026/10/31 ｜ 情报发生日期 2026-10-31
研究问题
Machine-learning research, however, has shown that consistently collected variables can identify people for additional evaluation.；Later models have included a range of sociodemographic, behavioral, disease history, laboratory, and cognitive factors, and performance depends critically on the target definition and whether baseline screening scores are included (, ).
方法
This section describes the study design, datasets, data preprocessing, feature extraction, model development, evaluation criteria, and conceptual decision-support logic.；The pipelines are trained and evaluated in isolation because they lack shared participants or a linking key.；We used these directory names to create labels.；The final physical cohort included 106 arm-raise videos, 104 knee-extension videos, and 105 sit-to-stand videos.
核心结论
Summary of the most common spatial resolution, as shown in , revealed that 1,280 × 720 was the most prevalent video resolution, followed by a few with lower and higher resolutions.；For transparency, we report holdout metrics for the remaining candidate classifiers only as post-selection descriptive comparisons; we did not use them for model selection, tuning, or revision of the locked random forest model.；Because participant and session identifiers were unavailable, we could not group the split by individual or recording session, and it should not be interpreted as evidence of subject-independent generalization. ‖ 结论：These findings demonstrate technical feasibility within the source datasets, not clinical recovery, autonomous care, or patient-level multimodal integration.
局限
Because no sensitivity analysis excluding MMSE and GDS was performed, the present study does not establish incremental predictive value of the remaining variables beyond these target-proximal measures.；A cross-sectional association between community-dwelling older adults with multimorbidity and physical activity level was graded, with higher physical activity levels associated with lower levels of frailty; the authors appropriately caution that a cross-sectional association does not establish prevention ().；These limitations are significant and narrow the range of inference.
对本项目的价值
★☆☆☆☆ 脑老化是最大未满足需求，也是终点最难量化的领域；biomarker 与认知读数选择最敏感。最大样本量约 5,000。
全文来源
PMC JATS 全文（正文 44,854 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Independent AI pipelines for rehabilitation exercise assessment and cognitive status classification: a retrospective proof of concept study.
- 期刊与标识：Front Public Health · PMID 42952747 · DOI 10.3389/fpubh.2026.1951198
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。
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