Sodium citrate supplementation enhances tennis skill performance: a crossover, placebo-controlled, double blind study.

Autor: Cunha VCR; School of Applied Sciences, University of Campinas, Rua Pedro Zaccaria 1300, Limeira, 13484-350, Sao Paulo, Brazil., Aoki MS; School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil., Zourdos MC; Department of Exercise Science and Health Promotion, Muscle Physiology Laboratory, Florida Atlantic University, Kissimme, Florida, USA., Gomes RV; School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil., Barbosa WP; School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil., Massa M; School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil., Moreira A; School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil., Capitani CD; School of Applied Sciences, University of Campinas, Rua Pedro Zaccaria 1300, Limeira, 13484-350, Sao Paulo, Brazil. caroline.capitani@fca.unicamp.br.
Jazyk: angličtina
Zdroj: Journal of the International Society of Sports Nutrition [J Int Soc Sports Nutr] 2019 Aug 01; Vol. 16 (1), pp. 32. Date of Electronic Publication: 2019 Aug 01.
DOI: 10.1186/s12970-019-0297-4
Abstrakt: Background: The efficacy of sodium citrate supplementation (SC) in exercise performance is unclear. Therefore, the aim of this study was to investigate the effect of SC on skilled tennis performance.
Methods: Ten Brazilian nationally-ranked young male tennis players (age: 17 ± 1 yrs.; stature: 176.7 ± 5.2 cm; body mass: 68.4 ± 7.9 kg) participated in this crossover, placebo-controlled, double-blind study. Upon arrival, at baseline, in both experimental sessions blood was collected, then subjects ingested either sodium citrate (SC - 0.5 g . kg -1 BM in capsules of 500 mg) or a placebo (PLA). Two hours later, pre-match blood was collected then skills tests (skill tennis performance test - STPT, repeated-sprint ability shuttle test - RSA) were performed followed by a 1-h simulated match. Immediately following the match, blood was again collected, and STPT, and RSA were administered.
Results: All metabolic parameters (i.e. base excess, pH, bicarbonate, and blood lactate) increased (p < 0.001) from baseline to pre-match and post-match in SC condition. Each metabolic parameter was greater (p < 0.001) in SC compared to PLA condition at both pre- and post-match. The SC condition elicited a greater (p < 0.01) shot consistency at post-match in the STPT vs. PLA condition (SC: 58.5 ± 14.8% vs. PLA: 40.4 ± 10.4%). A greater (p < 0.001) amount of games won was observed in the simulated match for SC condition vs. PLA condition (SC: 8.0 ± 1.6 vs. PLA: 6.0 ± 1.7). Additionally, the games won during the simulated match in SC condition was positively correlated with percentage shot consistency (r = 0.67, p < 0.001).
Conclusions: The current findings suggest that SC supplementation is an effective ergogenic aid to enhance skilled tennis performance.
Databáze: MEDLINE
Externí odkaz: