Effects of Acute Beta-Alanine Supplementation on Anaerobic Performance in Trained Female Cyclists

Abstract

Summary Longitudinal beta-alanine (BA) supplementation can improve exercise performance in males through increases in carnosine; however, females experience greater relative increases in carnosine compared to males. This potentially allows females to benefit from acute BA doses; however, effects of an acute BA dose on performance in females remain unknown. The purpose of this investigation was to evaluate how an acute dose of 1.6 g BA affects anaerobic performance in female cyclists. Twelve females (age526.661.3 y) volunteered to participate in this randomized, double-blind study. All participants completed two supplement trials: 1) Placebo534 g dextrose and 2) BA51.6 g BA 1 34 g dextrose. Thirtyminutes after supplementation, participants performed three repeated Wingate cycling tests with 2 min of active rest after each. Fatigue index, mean power, and peak power were measured during each Wingate. Lactate, heart rate, and rating of perceived exertion (RPE) were measured at rest, immediately after each Wingate, and after each active rest period. RPE significantly decreased (p,0.001) immediately following Wingates 1 and 2 and after each 2-min rest period for the BA trials; however, no differences were observed immediately after Wingate 3 (p.0.05). No significant supplementation effect was observed for any performance or physiological variable (p.0.05 for all variables). Findings suggest that an acute dose of BA (1.6 g) decreases RPE during anaerobic power activities in trained female cyclists.

Effects of Plyometric Training and Beta-Alanine Supplementation on Maximal-Intensity Exercise and Endurance in Female Soccer Players

“…However, this is the first study to demonstrate that only the combination of BA plus plyometric training induced a greater ( p < 0.05) increase in 20 m multistage shuttle run test times compared to the CONTROL group (Table 3). The ergogenic effects of beta-alanine on endurance exercise performance, especially in open-ended exercise tasks (Hobson et al, 2012) until volitional fatigue (Trexler et al, 2015), such as in this study, could occur through increased oxygen utilization and work production in later stages of the test (Smith et al, 2009), an increased ventilatory threshold (Stout et al, 2007) or a reduced rating of perceived exertion (Glenn et al, 2015b). …”

The Aerob and Anaerob Performance Beta-Alanine Supplement and Ergogenic Aid Using to the Power Output Variables in Cyclists: A Cohort Studies Random Model Effect

“…Over long time periods, it is believed that it can increase the effect of international road cyclist training of anaerobic and aerobic high effect time 1-day micro cycle anaerobic threshold but long-term efficiency as 4-to-8-week same periodization because estimated to power and lactate mmol increase [5,20,24,25,26,27,28,29]. Male cyclist at least per week 7 hours training about 20 km trial load is occur 7/Watt power increase sequence of intervals but increasing mechanism in the muscle would not proper training into beta-alanine use because 48 hours or 24 hours eliminated lactate as well as recovery most speed.…”

“…Same participation groups regardless of experience characteristics aerobic power has been limited long time periods. Anaerobic power reported that, time as periods to measurement protocols are values parameter obtainement eligibility power output reference [25,26]. Therefore, races cycling time-period anaerobic less were founded [5].…”

The Ergogenic Effects of Supplemental Nutritional Aids on Anaerobic Performance in Female Athletes

“…In humans, muscle carnosine content ranges from 17.5 6 4.8 mmol$kg -1 dm in women to 21.3 6 4.2 mmol$kg 21 dm in men (81). Literature is consistent to show the efficacy of b-alanine supplementation on the increase of muscle carnosine content (10,34,35,51,56) within as little as 2 weeks (105); however, acute doses have proven ineffective (46). After longitudinal supplementation, carnosine levels are documented to increase up to 65% (51) and 80% (56) after 4 and 10 weeks, respectively.…”