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http://hdl.handle.net/2445/187032
Title: | Circulating nitrate-nitrite reduces oxygen uptake for improving resistance exercise performance after rest time in well-trained CrossFit athletes |
Author: | Garnacho Castaño, Manuel Vicente Sánchez Nuño, Sergio Molina Raya, Lorena, 1979- Carbonell i Camós, Teresa Maté-Muñoz, José Luis Pleguezuelos Cobo, Eulogio Serra-Payá, Noemí |
Keywords: | Nitrits Exercici Atletes Nitrites Exercise Track and field athletes |
Issue Date: | 11-Jun-2022 |
Publisher: | Nature Publishing Group |
Abstract: | This study aimed to determine the effects of circulating nitrate plus nitrite (NOx) concentrations on resistance exercise performance, VO2 and biomarkers of muscle damage. Eleven well-trained male CrossFit athletes (29.2 ± 3.7 years, 78.9 ± 5.4 kg, 175.1 ± 6.3 cm) carried out a resistance exercise test after drinking 140 mL of beetroot juice (BJ) or placebo. The test consisted of repeating the same resistance exercise routine twice: wall ball shots plus full back squat with 3-min rest (1st routine) or without rest (2nd routine) between the two exercises. Higher NOx plasma levels were verified after BJ than placebo in the pretest and post-test (p < 0.001). A higher number of repetitions was observed after BJ intake compared to placebo in the full back squat exercise during the first routine (p = 0.004). A significantly reduced VO2 was detected after BJ intake compared to placebo during rest and full back squat execution in the first routine (p < 0.05). Plasma myoglobin concentrations were significantly increased with BJ compared to placebo (p = 0.036). These results showed that plasma NOx levels reduced VO2 after BJ intake during rest time. These reduced VO2 was a key factor for improving full back squat performance during the first routine. |
Note: | Reproducció del document publicat a: https://doi.org/10.1038/s41598-022-13786-x |
It is part of: | Scientific Reports, 2022, vol. 12, num. 9671, p. 1-11 |
URI: | http://hdl.handle.net/2445/187032 |
Related resource: | https://doi.org/10.1038/s41598-022-13786-x |
ISSN: | 2045-2322 |
Appears in Collections: | Articles publicats en revistes (Biologia Cel·lular, Fisiologia i Immunologia) |
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