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- W4281736152 abstract "Previous studies have suggested that beta-alanine supplementation may benefit exercise performance, but current evidence regarding its effects on body composition remains unclear. This systematic review and meta-analysis aimed to investigate the effects of beta-alanine supplementation on body composition indices.Online databases, including PubMed/Medline, Scopus, Web of Science, and Embase, were searched up to April 2021 to retrieve randomized controlled trials (RCTs), which examined the effect of beta-alanine supplementation on body composition indices. Meta-analyses were carried out using a random-effects model. The I2 index was used to assess the heterogeneity of RCTs.Among the initial 1413 studies that were identified from electronic databases search, 20 studies involving 492 participants were eligible. Pooled effect size from 20 studies indicated that beta-alanine supplementation has no effect on body mass (WMD: -0.15 kg; 95% CI: -0.78 to 0.47; p = 0.631, I2 = 0.0%, p = 0.998), fat mass (FM) (WMD: -0.24 kg; 95% CI: -1.16 to 0.68; p = 0.612, I2 = 0.0%, p = 0.969), body fat percentage (BFP) (WMD: -0.06%; 95% CI: -0.53 to 0.40; p = 0.782, I2 = 0.0%, p = 0.936), and fat-free mass (FFM) (WMD: 0.05 kg; 95% CI: -0.71 to 0.82; p = 0.889, I2 = 0.0%, p = 0.912). Subgroup analyses based on exercise type (resistance training [RT], endurance training [ET], and combined training [CT]), study duration (<8 and ≥8 weeks), and beta-alanine dosage (<6 and ≥6 g/d) demonstrated similar results. Certainty of evidence across outcomes ranged from low to moderate.This meta-analysis study suggests that beta-alanine supplementation is unlikely to improve body composition indices regardless of supplementation dosage and its combination with exercise training. No studies have examined the effect of beta-alanine combined with both diet and exercise on body composition changes as the primary variable. Therefore, future studies examining the effect of the combination of beta-alanine supplementation with a hypocaloric diet and exercise programs are warranted." @default.
- W4281736152 created "2022-06-13" @default.
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- W4281736152 date "2022-05-31" @default.
- W4281736152 modified "2023-10-14" @default.
- W4281736152 title "Effects of beta-alanine supplementation on body composition: a GRADE-assessed systematic review and meta-analysis" @default.
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- W4281736152 doi "https://doi.org/10.1080/15502783.2022.2079384" @default.
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