目标:本系统综述(OoSRs)旨在,首先,为了系统地审查,总结,并评估已发表的系统综述的结果,有或没有荟萃分析,这些荟萃分析研究了支链氨基酸(BCAA)对肌肉损伤生物标志物运动后恢复的影响,肌肉酸痛,和肌肉表现。次要目标是使用随机效应Hartung-Knapp-Sidik-Jonkman(HKSJ)方法重新分析和标准化荟萃分析的结果。方法:使用评估系统评论2的测量工具评估评论的方法学质量。我们搜索了五个数据库(即,PubMed,WebofScience,Scopus,SPORTDiscus,ProQuest)进行有或没有荟萃分析的系统评价,以调查BCAA补充剂对肌肉损伤生物标志物运动后恢复的影响,肌肉酸痛,和肌肉表现。结果:纳入了11项系统评价(7项具有荟萃分析)。有证据表明,摄入BCAA可在运动后立即减弱肌酸激酶(CK)水平(中等效应)和肌肉酸痛(小效应),并加速其恢复过程。对CK水平的影响很小,对肌肉酸痛的影响很小。补充BCAA对乳酸脱氢酶没有影响,肌红蛋白,和肌肉性能恢复。使用HKSJ方法使用原始数据进行的重新分析报告了结果显著性的轻微变化,得出与原始结果相同的证据。在分析的评论中发现的主要缺陷是没有理由排除研究,以及缺乏为初级研究提供资金来源和利益冲突来源和/或资金说明。结论:补充BCAA是减少运动后肌肉损伤生物标志物的有效方法,特别是CK水平,肌肉酸痛,对肌肉性能没有影响。未来有/没有荟萃分析的系统评价,以更严格的方法,是需要的。
这是调查补充BCAA对肌肉损伤生物标志物影响的系统综述的第一个概述,肌肉酸痛,和运动后恢复的肌肉表现。补充BCAA可降低肌酸激酶水平和肌肉酸痛,特别是当纵向消耗高剂量的BCAA时。补充BCAA对运动后恢复的肌肉性能没有影响。
Objective: This overview of systematic reviews (OoSRs) aimed, firstly, to systematically review, summarize, and appraise the findings of published systematic reviews with or without meta-analyses that investigate the effects of branched-chain amino acids (
BCAA) on post-exercise recovery of muscle damage biomarkers, muscle soreness, and muscle performance. The secondary objective was to re-analyze and standardize the results of meta-analyses using the random-effects Hartung-Knapp-Sidik-Jonkman (HKSJ) method.Methods: The methodological quality of the reviews was assessed using A Measurement Tool to Assess Systematic Reviews 2.We searched on five databases (i.e., PubMed, Web of Science, Scopus, SPORTDiscus, ProQuest) for systematic reviews with or without meta-analyses that investigated the effects of BCAA supplementation on the post-exercise recovery of muscle damage biomarkers, muscle soreness, and muscle performance.Results: Eleven systematic reviews (seven with meta-analyses) of individual studies were included. Evidence suggests
BCAA ingestion attenuates creatine kinase (CK) levels (medium effects) and muscle soreness (small effects) immediately post-exercise and accelerates their recovery process, with trivial-to-large effects for CK levels and small-to-large effects for muscle soreness.
BCAA supplementation has no effect on lactate dehydrogenase, myoglobin, and muscle performance recovery. The re-analyses with HKSJ method using the original data reported a slight change in results significance, concluding the same evidence as the original results. The major flaws found in the analyzed reviews were the absence of justification for excluding studies, and the lack of provision of sources of funding for primary studies and sources of conflict of interest and/or funding description.Conclusions:
BCAA supplementation is an effective method to reduce post-exercise muscle damage biomarkers, particularly CK levels, and muscle soreness, with no effect on muscle performance. Future systematic reviews with/without meta-analyses, with greater methodological rigor, are needed.
This is the first overview of systematic reviews investigating the impact of
BCAA supplementation on muscle damage biomarkers, muscle soreness, and muscle performance post-exercise recovery.BCAA supplementation reduces creatine kinase levels and muscle soreness, especially when consuming a high dose of BCAA longitudinally.BCAA supplementation has no effect on muscle performance post-exercise recovery.