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Effects of chronic betaine supplementation on exercise performance: Systematic review and meta-analysis

cris.virtual.author-orcid0000-0002-9030-1805
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cris.virtual.author-orcid0000-0001-6611-3380
cris.virtualsource.author-orcidd9cad178-0d31-4dd0-a418-60d6ed7cfa5d
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cris.virtualsource.author-orcidffa0a134-79c7-419e-b747-7cbc355eb074
dc.abstract.enBetaine supplementation, a dietary practice that possesses potential effects on exercise performance, has undergone extensive study. This study aimed to systematically review and meta-analyse betaine supplementation’s effects on exercise performance. We searched PubMed, Web of Science, Scopus, and Google Scholar, focusing on studies comparing chronic betaine to a placebo in healthy humans aged 15–60 years, measuring exercise outcomes. Studies with acute betaine supplementation, no control group, or animals were excluded. Quality assessment was done using the Cochrane Risk of Bias Tool, and a random-effects model was employed for the meta-analysis. The review included 17 studies with 317 participants (21% female). The results revealed a significant effect size of 0.47 (95% CI 0.04 to 0.89) for maximal strength (1RM, 3RM, maximal isokinetic or isometric force), particularly in the lower body (SMD: 0.49, 95% CI 0.01 to 0.98). No significant effects were found for upper body strength, cycling sprint power, bench press throws power, or muscular endurance. However, vertical jumping performance improved significantly (SMD: 0.36, 95% CI 0.03 to 0.69) after excluding a low-quality study. In conclusion, betaine supplementation for at least 7 days significantly enhances muscular strength, especially lower body strength, and shows potential in improving vertical jumping performance.
dc.affiliationWydział Nauk o Żywności i Żywieniu
dc.affiliation.instituteKatedra Żywienia Człowieka i Dietetyki
dc.contributor.authorZawieja, Emilia
dc.contributor.authorMachek, Steven
dc.contributor.authorZanchi, Nelo Eidy
dc.contributor.authorCholewa, Jason
dc.contributor.authorWoźniewicz, Małgorzata
dc.date.accessioned2024-12-03T08:53:40Z
dc.date.available2024-12-03T08:53:40Z
dc.date.issued2024
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,3
dc.description.number22
dc.description.points100
dc.description.volume42
dc.identifier.doi10.1080/02640414.2024.2423578
dc.identifier.eissn1466-447X
dc.identifier.issn0264-0414
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/2151
dc.languageen
dc.relation.ispartofJournal of Sports Sciences
dc.relation.pages2131-2144
dc.rightsClosedAccess
dc.sciencecloudsend
dc.subject.enbetaine
dc.subject.enmuscular strength
dc.subject.enmuscular power
dc.subject.enendurance
dc.subject.enexercise
dc.subject.ensupplementation
dc.subtypeReviewArticle
dc.titleEffects of chronic betaine supplementation on exercise performance: Systematic review and meta-analysis
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue22
oaire.citation.volume42