β-alanine Supplementation Fails to Increase Peak Aerobic Power or Ventilatory Threshold in Aerobically Trained Males.

Autor:	Greer BK; a 1 Physical Therapy and Human Movement Science, Sacred Heart University, Fairfield, CT, USA., Katalinas ME; a 1 Physical Therapy and Human Movement Science, Sacred Heart University, Fairfield, CT, USA., Shaholli DM; b 2 Sacred Heart University, Fairfield, CT, USA., Gallo PM; c 3 Norwalk Community College, Norwalk, CT, USA.
Jazyk:	angličtina
Zdroj:	Journal of dietary supplements [J Diet Suppl] 2016; Vol. 13 (2), pp. 165-70. Date of Electronic Publication: 2014 Oct 09.
DOI:	10.3109/19390211.2014.965867
Abstrakt:	The purpose of the present study was to determine the effect of 30 days of β-alanine supplementation on peak aerobic power and ventilatory threshold (VT) in aerobically fit males. Fourteen males (28.8 ± 9.8 yrs) were assigned to either a β-alanine (SUPP) or placebo (PLAC) group; groups were matched for VT as it was the primary outcome measure. β-alanine supplementation consisted of 3 g/day for 7 days, and 6 g/day for the remaining 23 days. Before and after the supplementation period, subjects performed a continuous, graded cycle ergometry test to determine VO2 peak and VT. Metabolic data were analyzed using a 2 × 2 ANOVA with repeated measures. Thirty days of β-alanine supplementation (SUPP) did not increase VO2 peak (4.05 ± 0.6 vs. 4.14 ± 0.6 L/min) as compared to the placebo (PLAC) group (3.88 ± 0.2 vs. 3.97 ± 0.2 L/min) (p > .05). VT did not significantly improve in either the SUPP (3.21 ± 0.5 vs. 3.33 ± 0.5 L/min) or PLAC (3.19 ± 0.1 vs. 3.20 ± 0.1 L/min) group (p > .05). In conclusion, 30 days of β-alanine supplementation had no effect on VO2 peak or VT in aerobically trained athletes.
Databáze:	MEDLINE
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