The effects of beta alanine plus creatine administration on performance during repeated bouts of supramaximal exercise in sedentary men.
Study Goal
The researchers aimed to investigate the effects of beta-alanine, alone or combined with creatine, on performance during repeated supramaximal exercise in sedentary men.
Results Summary
Beta-alanine, especially when combined with creatine, increased mean power and delayed fatigue during repeated Wingate tests, though peak power improvements were primarily seen with creatine alone.
Population
Untrained healthy men aged 20-22 years (weight: 68-72 kg, height: 174-178 cm).
Effective Dosage
1.6 g beta-alanine twice daily for 22 days, then four times daily for 6 days (combined with maltodextrose).
Duration
28 days
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
creatine supplementation | increase | PP2 | sedentary men | from 642.7±148.6 to 825.1±205.2 | increased | #1 |
creatine supplementation | increase | PP3 | sedentary men | from 522.9±117.5 to 683.0±148.0 | increased | #2 |
beta-alanine plus creatine supplementation | increase | MP1 | sedentary men | from 586.2±55.4 to 620.6±49.6 | increased | #3 |
beta-alanine plus creatine supplementation | increase | MP2 | sedentary men | from 418.1±37.2 to 478.3±30.3 | increased | #4 |
beta-alanine plus creatine supplementation | increase | MP3 | sedentary men | from 362.0±41.3 to 399.1±3 | increased | #5 |
beta alanine supplementation | no change | FI | sedentary men | - | did not change | #6 |
beta alanine plus creatine supplementation | no change | FI | sedentary men | - | did not change | #7 |
Beta-alanine and beta alanine plus creatine supplementations | increase | mean power | - | - | have strong performance enhancing effect by increasing | #8 |
Beta-alanine and beta alanine plus creatine supplementations | decrease | fatigue Index | - | - | have strong performance enhancing effect by delaying | #9 |
AIM: The aim of this study was to investigate the effects of beta alanine and/or creatine supplementation on performance during repeated bouts of supramaximal exercise in sedentary men. METHODS: Forty-four untrained healthy men (aged 20-22 years, weight: 68-72 kg, height: 174-178 cm) participated in the present study. After performing the Wingate Test (WAnT) for three times in the baseline exercise session, the subjects were assigned to one of four treatment groups randomly: 1) placebo (P; 10 g maltodextrose); 2) creatine (Cr; 5 g creatine plus 5 g maltodextrose); 3) beta-alanine (β-ALA; 1,6 g beta alanine plus 8,4 g maltodextrose); and 4) beta-alanine plus creatine (β-ALA+Cr; 1,6 g beta alanine plus 5 g creatine plus 3,4 g maltodextrose). Participants were given the supplements orally twice a day for 22 consecutive days, then four times a day for the following 6 days. After 28 days, the second exercise session was applied during which peak power (PP) and mean power (MP) were measured and fatigue index (FI) was calculated. RESULTS: PP and MP decreased and FI increased in all groups during exercise before and after the treatment. During the postsupplementation session PP2 and PP3 increased in creatine supplemented group (from 642.7±148.6 to 825.1±205.2 in PP2 and from 522.9±117.5 to 683.0±148.0 in PP3, respectively). However, MP increased in β-ALA+Cr during the postsupplementation compared to presupplementation in all exercise sessions (from 586.2±55.4 to 620.6±49.6 in MP1, from 418.1±37.2 to 478.3±30.3 in MP2 and from 362.0±41.3 to 399.1±3 in MP3, respectively). FI did not change with beta alanine and beta alanine plus creatine supplementation during the postsupplementation exercise session. CONCLUSION: Beta-alanine and beta alanine plus creatine supplementations have strong performance enhancing effect by increasing mean power and delaying fatigue Index during the repeated WAnT.