Oral / Poster Presentation File
Department of Sports Physiology, Faculty of Sports Sciences, University of Isfahan, Isfahan, Iran
Methods: Forty-one males were randomized in a double-blind, placebo-controlled manner into one of four supplementation groups: β-ALA only (n=10), creatine only (n=10), β-ALA and creatine combined (n=9) and placebo (n=12). Participants were supplemented for 8 weeks included a loading phase for the creatine for the first two weeks of 0.3 g/kg of body weight and a maintenance phase for next weeks of 0.1 g/kg of body weight, with or without a continuous dose of β-ALA of 0.1 g/kg of body weight with doses rounded to the nearest 800 mg capsule providing an average of 6.1±0.7 g/day of β-ALA. Participants reported for testing at baseline, and day 60. Testing sessions consisted of performing a graded exercise test on the cycle ergometer for VO2max with lactate threshold determination, and multiple Wingate anaerobic capacity tests.
Results: Although mean changes were consistent with prior studies and large effect sizes were noted, no significant differences were observed among groups in the amount of lactate after warming up (P=0.1) and Similarly five minutes after the test (P=0.17), while the amount of lactate had a significant decrease in time of 3 minutes after the test (P=0.02). No statistically significant effects were observed among groups in fatigue Index (P=0.27), meanwhile the amount of peak power didn’t have a significant change between groups (P=0.41). Finally, VO2max measurement didn’t show any significant change (P=0.85).
Conclusions: Results of the present study did not show any consistent additive benefits of β-ALA and creatine monohydrate supplementation in Taekwondo athletes
