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One-Week L-Arginine Supplementation Had No Effect on 200m Freestyle Swimming Time Trial in Moderately-Trained Male Swimmers.
- Source :
-
Journal of Dietary Supplements . 2023, Vol. 20 Issue 5, p777-787. 11p. - Publication Year :
- 2023
-
Abstract
- Research on the effect of L-arginine supplementation on exercise performance is still inconsistent and its influence on single-bout swimming performance has not been investigated. Therefore, the aim of this study was to assess if one-week L-arginine supplementation would enhance 200-m freestyle swimming performance in trained/developmental (regularly training ∼3 times per week with a purpose to compete) male swimmers. In a randomized, cross-over, double-blind design, 8 trained/developmental male swimmers (age 25 ± 5 years; mean ± SD) completed 200-m freestyle swimming time-trial on 3 separate occasions: a control trial; and after 2 separate 7-d supplementation periods, with a daily dose of either 8 g/d of L-arginine or placebo trials. Blood lactate concentration was measured immediately post time-trial swimming. Completion time of the 200-m freestyle swimming time-trial did not differ significantly (F = 4.55; P = 0.060; ŋp2 = 0.394) between control (149.40 ± 9.88 s), L-arginine (146.02 ± 10.34 s) and placebo trials (147.58 ± 10.86 s). There was no statistically significant difference in post time-trial swimming blood lactate concentration between trials (control: 11.2 ± 2.7; L-arginine: 13.1 ± 1.8; Placebo: 12.2 ± 2.7, F = 3.52; P = 0.058; ŋp2 = 0.335). One-week of supplementation with 8 g/d of L-arginine, had no ergogenic effect on middle-distance (200-m), freestyle swimming performance in trained/developmental male swimmers. [ABSTRACT FROM AUTHOR]
- Subjects :
- *EXPERIMENTAL design
*CONFIDENCE intervals
*ONE-way analysis of variance
*TIME
*OXYGEN consumption
*ARGININE
*DIETARY supplements
*RANDOMIZED controlled trials
*PLACEBOS
*COMPARATIVE studies
*BLIND experiment
*DESCRIPTIVE statistics
*REPEATED measures design
*BLOOD circulation
*LACTATES
*SWIMMING
*ATHLETIC ability
*STATISTICAL sampling
*CROSSOVER trials
*DATA analysis software
Subjects
Details
- Language :
- English
- ISSN :
- 19390211
- Volume :
- 20
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Dietary Supplements
- Publication Type :
- Academic Journal
- Accession number :
- 169769118
- Full Text :
- https://doi.org/10.1080/19390211.2022.2119321