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Effects of chronic betaine supplementation on performance in professional young soccer players during a competitive season: a double blind, randomized, placebo-controlled trial
dc.contributor.author | Nobari, Hadi | |
dc.contributor.author | Castillo Rodríguez, Alfonso | |
dc.date.accessioned | 2021-11-03T09:06:49Z | |
dc.date.available | 2021-11-03T09:06:49Z | |
dc.date.issued | 2021-10-18 | |
dc.identifier.citation | Nobari, H... [et al.]. Effects of chronic betaine supplementation on performance in professional young soccer players during a competitive season: a double blind, randomized, placebo-controlled trial. J Int Soc Sports Nutr 18, 67 (2021). [https://doi.org/10.1186/s12970-021-00464-y] | es_ES |
dc.identifier.uri | http://hdl.handle.net/10481/71247 | |
dc.description.abstract | Objective: Various nutritional strategies are adopted for athletes to maintain and to improve performance during the competition season. Betaine may enhance performance during a competitive season by increasing the testosterone to cortisol ratio and reducing systemic inflammation. The aim of this study was to investigate the effect of betaine supplementation on the bio-motor abilities in young professional soccer players. Methods: Twenty-nine young professional soccer players (age, 15.5±0.3 years) were matched by position and randomly assigned to one of two groups for 14 weeks: betaine (BG, 2 g/day; n=14) or placebo (PG n=15). Diet was standardized by a nutritionist, and measures of muscular power (countermovement jump: CMJ), change of direction: modified 5-0-5), acceleration (10 m sprint), sprint performance (30 m sprint time: SpT), muscular strength (leg press and bench press one repetition maximum: 1-RM), repeated sprint ability (running-based anaerobic sprint test: RAST), and aerobic capacity (30-15 intermittent fitness test) were assessed in the pre (P1), mid (P2) and post (P3) season over the course of 5 days. All subjects participated in one soccer match and five training sessions per week. Results: Significant (p < 0.05) group x time interactions were found for maximal oxygen uptake (VO2max), anaerobic peak power, and muscular strength favoring BG at P2 and P3 compared to P1. There were meaningful (p < 0.05) group x time interactions for CMJ, SpT, and peak power during the RAST that favored the BG. Conclusions: 14-week of betaine supplementation increased predicted 1-RM, VO2max, and repeated sprint ability performance in youth professional soccer players. Betaine supplementation seems to be a useful nutritional strategy to improve and to maintain performance during a competitive soccer season. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | BMC | es_ES |
dc.rights | Atribución 3.0 España | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Anaerobic peak power | es_ES |
dc.subject | CMJ | es_ES |
dc.subject | Football | es_ES |
dc.subject | RSA | es_ES |
dc.subject | VO2max | es_ES |
dc.subject | Young sports | es_ES |
dc.subject | 1-RM | es_ES |
dc.title | Effects of chronic betaine supplementation on performance in professional young soccer players during a competitive season: a double blind, randomized, placebo-controlled trial | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.identifier.doi | 10.1186/s12970-021-00464-y | |
dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | es_ES |