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Influence of Beetroot Supplementation on Oxygen Muscle Saturation of Semi-Professional Soccer Players Following a Repeated Sprint Test
- Source :
- Central European Journal of Sport Sciences and Medicine, Vol 42 (2023)
- Publication Year :
- 2023
- Publisher :
- Wydawnictwo Naukowe Uniwersytetu Szczecińskiego, 2023.
-
Abstract
- Dietary nitrates have hemodynamic and metabolic effects on the body. This study aimed to investigate nitrate intake's effect on quadricep muscle oxygen saturation (StO2) of semi-professional soccer players during a repeated speed test (RSA). In a randomized, crossover design, 10 semi-professional soccer men players (21.3 ± 0.9yrs) performed two conditions: In one they consumed a nitrate-rich concentrated beetroot juice (250 mL/150 mg of NO3−) and in the other a placebo, 2h before a repeated sprint test. StO2 of the right vastus lateralis muscle was measured by near-infrared spectroscopy. A paired samples t-test was used to compute any differences in the subjects’ performance on the StO2 and on RSA test. The level of significance was set at p < 0.05. The supplementation of nitrates limited the decrease in muscle oxygenation during the six sprints of RSA test (p < 0.001) and also, there seemed to be a tendency for limited the decrement of performance on RSA test (t = -1.586, p = 0.157, η2 = 0.218). In conclusion, acute nitrate supplementation reduces the decrement of muscle oxygenation during exercise with repeated sprints and leads to a tendency of fatigue resistance during repeated sprints under controlled situations. Nitrate supplementation may have an ergogenic effect during exercise with repeated sprints via the higher muscle oxygenation.
Details
- Language :
- English
- ISSN :
- 23009705
- Volume :
- 42
- Database :
- Directory of Open Access Journals
- Journal :
- Central European Journal of Sport Sciences and Medicine
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.6edcafc2adb45349b3199a725960052
- Document Type :
- article
- Full Text :
- https://doi.org/10.18276/cej.2023.2-05