title: β-alanine Supplementation Fails to Increase Peak Aerobic Power or Ventilatory Threshold in Aerobically Trained Males.
abstract: 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.
authors.affiliation: a 1 Physical Therapy and Human Movement Science, Sacred Heart University, Fairfield, CT, USA.
authors.forename: Beau Kjerulf
authors.initials: BK
authors.lastname: Greer
authors.affiliation: a 1 Physical Therapy and Human Movement Science, Sacred Heart University, Fairfield, CT, USA.
authors.forename: Matthew E
authors.initials: ME
authors.lastname: Katalinas
authors.affiliation: b 2 Sacred Heart University, Fairfield, CT, USA.
authors.forename: Danielle M
authors.initials: DM
authors.lastname: Shaholli
authors.affiliation: c 3 Norwalk Community College, Norwalk, CT, USA.
authors.forename: Paul M
authors.initials: PM
authors.lastname: Gallo
mesh_terms: D000328:Adult; D001642:Bicycling; D019587:Dietary Supplements; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010807:Physical Endurance / Q000187:drug effects; D055815:Young Adult; D015091:beta-Alanine / Q000008:administration & dosage*
chemical_list: D015091:beta-Alanine
keywords: Cycling; ergogenic aids; lactate threshold; supplement