Journal of cachexia, sarcopenia and muscle · 2026 · 統合分析（依標題推測）

Disuse-Induced Muscle Atrophy and Muscle Weakness From Hospitalization to Spaceflight: Exercise Succeeds in Prevention and Treatment-A Meta-Analysis.

高齡・肌少・骨骼健康 · 廢用性肌肉萎縮

中文閱讀摘要

統合分析顯示運動可預防住院及臥床肌力流失並維持肌量，但太空飛行無顯著效益，治療性運動效果有限。

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原始摘要

Background

Exercise has been proposed as both a preventive and therapeutic countermeasure; however, its effectiveness across different disuse conditions and timings of implementation remains uncertain.

Methods

This systematic review and meta-analysis (PROSPERO: CRD42021256599) searched ClinicalTrials.gov, Cochrane Central, PubMed, SPORTDiscus, Web of Science, Scopus, CINAHL and SciELO from inception to May 2021, with an update in March 2025. Randomized and nonrandomized controlled trials examining exercise interventions during or after muscle disuse were included according to the PICOS framework. Random-effects meta-analysis evaluated effects on muscle strength, power and mass across hospitalization, bed rest and spaceflight conditions. Effect sizes (ES) are reported as standardized mean differences with 95% confidence intervals (CI).

Results

A total of 1754 participants (66% male, 34% female; mean age 49 ± 22 years) were included. Preventive exercise interventions significantly improved muscle strength and power across disuse models. During hospitalization, exercise significantly increased muscle strength (ES = 0.60, 95% CI [0.42, 0.78]; p < 0.0001; I 2 = 76%). This effect remained significant in multilevel analyses accounting for within-study dependence (ES = 0.58, 95% CI [0.19, 0.96]; p = 0.003). During bed rest, conventional random-effects analyses indicated large effects (ES = 1.16, 95% CI [0.60, 1.71]; p < 0.0001; I 2 = 55%); however, multilevel models incorporating correlated lower limb strength and power outcomes showed no significant pooled effect (ES = 0.06, 95% CI [-1.31, 1.43]; p = 0.93). In contrast, spaceflight studies demonstrated small, nonsignificant effects on muscle strength and power (ES = 0.10, 95% CI [-0.32, 0.51]; p = 0.65), and pooled standardized mean change analyses indicated no significant overall change in muscle mass (ES = 0.002, 95% CI [-0.077, 0.080]; p = 0.966). When exercise was applied therapeutically after disuse, a trend toward improved muscle strength and power was observed (ES = 0.23, 95% CI [-0.01, 0.47]; p = 0.06; I 2 = 12%), although multilevel models showed no significant effects (ES = 0.30, 95% CI [-0.34, 0.95]; p = 0.361). Exercise significantly preserved or increased muscle mass during bed rest (ES = 0.47, 95% CI [0.19, 0.74]; p = 0.0009) and spaceflight (ES = 0.27, 95% CI [0.05, 0.48]; p = 0.02).

Conclusion

Exercise, particularly resistance training, attenuates muscle strength loss and preserves muscle mass during hospitalization and bed rest, whereas no consistent benefits are observed during spaceflight. Exercise initiated after disuse shows modest potential for restoring muscle function. Current evidence is insufficient to determine whether preventive or therapeutic initiation provides superior outcomes. Further high-quality randomized controlled trials are required to define the optimal timing, modality and dose of exercise for clinical rehabilitation and aerospace applications.

至 Europe PMC 閱讀完整來源 ↗ · 擷取日期 2026-10-19

書目、來源與全文狀態

DOI: 10.1002/jcsm.70259
PMID／PMCID: 41983453 / PMC13080877
作者: Padilha CS, Figueiredo C, Deminice R, Ribeiro AS, Newton RU, Hart NH, Rosa-Neto JC, Seelaender M, Lira FS
首次發表日期: 2026-04-01Europe PMC 提供，部分日期可能依年份或月份推定。
卷／期／頁碼或文章編號: 17 ／ 2 ／ e70259
書目來源與查核日期: Europe PMC · 2026-10-19僅核對書目欄位與來源連結；不代表已評讀研究品質。
全文與授權: 來源列有免費全文（查核 2026-10-19），未逐篇測試 PDF 下載。來源授權標示：cc by。

可回溯引用

Padilha CS, Figueiredo C, Deminice R, Ribeiro AS, Newton RU, Hart NH, Rosa-Neto JC, Seelaender M, Lira FS. Disuse-Induced Muscle Atrophy and Muscle Weakness From Hospitalization to Spaceflight: Exercise Succeeds in Prevention and Treatment-A Meta-Analysis. Journal of cachexia, sarcopenia and muscle. 2026;17(2):e70259. PMID: 41983453. PMCID: PMC13080877. doi:10.1002/jcsm.70259

原始文獻 ↗來源列出的免費全文 ↗

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