Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over Study
As a nitric oxide precursor, beetroot juice (BJ) is known to enhance high-intensity exercise performance (80–100% VO2max) yet its impacts on higher intensity sprint exercise (>100% VO2max) remain to be established. This study sought to examine the effects of BJ supplementation on pe...
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MDPI AG
2018-09-01
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| Series: | Nutrients |
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| Online Access: | http://www.mdpi.com/2072-6643/10/9/1222 |
| _version_ | 1811327086380449792 |
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| author | Eduardo Cuenca Pablo Jodra Alberto Pérez-López Liliana G. González-Rodríguez Sandro Fernandes da Silva Pablo Veiga-Herreros Raúl Domínguez |
| author_facet | Eduardo Cuenca Pablo Jodra Alberto Pérez-López Liliana G. González-Rodríguez Sandro Fernandes da Silva Pablo Veiga-Herreros Raúl Domínguez |
| author_sort | Eduardo Cuenca |
| collection | DOAJ |
| description | As a nitric oxide precursor, beetroot juice (BJ) is known to enhance high-intensity exercise performance (80–100% VO2max) yet its impacts on higher intensity sprint exercise (>100% VO2max) remain to be established. This study sought to examine the effects of BJ supplementation on performance and subsequent fatigue during an all-out sprint exercise. Using a randomized cross-over, double-blind, placebo-controlled design, 15 healthy resistance-trained men (22.4 ± 1.6 years) ingested 70 mL of either BJ or placebo. Three hours later, participants undertook a 30-s all-out Wingate test. Before and after the sprint exercise and at 30 s and 180 s post-exercise, three countermovement jumps (CMJ) were performed and blood lactate samples were obtained. Compared to placebo, BJ consumption improved peak (placebo vs. BJ, 848 ± 134 vs. 881 ± 135 W; p = 0.049) and mean (641 ± 91 vs. 666 ± 100 W; p = 0.023) power output and also reduced the time taken to reach Wpeak in the Wingate test (8.9 ± 1.4 vs. 7.3 ± 0.9 s; p = 0.003). No differences were detected in the fatigue index. In addition, while over time CMJ height and power diminished (ANOVA p < 0.001) and blood lactate levels increased (ANOVA p < 0.001), no supplementation effect was observed. Our findings indicate that while BJ supplementation improved performance at the 30-s cycling sprint, this improvement was not accompanied by differences in fatigue during or after this type of exercise. |
| first_indexed | 2024-04-13T15:00:27Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2072-6643 |
| language | English |
| last_indexed | 2024-04-13T15:00:27Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nutrients |
| spelling | doaj.art-c6a302e4f7324870a2ddaa33af0d84e12022-12-22T02:42:19ZengMDPI AGNutrients2072-66432018-09-01109122210.3390/nu10091222nu10091222Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over StudyEduardo Cuenca0Pablo Jodra1Alberto Pérez-López2Liliana G. González-Rodríguez3Sandro Fernandes da Silva4Pablo Veiga-Herreros5Raúl Domínguez6GRI-AFIRS, Escuela de Ciencias de la Salud, TecnoCampus-Universidad Pompeu Fabra, Mataró, 08005 Barcelona, SpainFaculty of Health Sciences, University Alfonso X El Sabio, 28691 Madrid, SpainDepartment of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, 28805 Alcalá de Henares, SpainFaculty of Health Sciences, University Alfonso X El Sabio, 28691 Madrid, SpainStudies Research Group in Neuromuscular Responses (GEPE N), University of Lavras, 37200-000 Lavras, BrazilFaculty of Health Sciences, University Alfonso X El Sabio, 28691 Madrid, SpainFaculty of Health Sciences, University Isabel I, 09004 Burgos, SpainAs a nitric oxide precursor, beetroot juice (BJ) is known to enhance high-intensity exercise performance (80–100% VO2max) yet its impacts on higher intensity sprint exercise (>100% VO2max) remain to be established. This study sought to examine the effects of BJ supplementation on performance and subsequent fatigue during an all-out sprint exercise. Using a randomized cross-over, double-blind, placebo-controlled design, 15 healthy resistance-trained men (22.4 ± 1.6 years) ingested 70 mL of either BJ or placebo. Three hours later, participants undertook a 30-s all-out Wingate test. Before and after the sprint exercise and at 30 s and 180 s post-exercise, three countermovement jumps (CMJ) were performed and blood lactate samples were obtained. Compared to placebo, BJ consumption improved peak (placebo vs. BJ, 848 ± 134 vs. 881 ± 135 W; p = 0.049) and mean (641 ± 91 vs. 666 ± 100 W; p = 0.023) power output and also reduced the time taken to reach Wpeak in the Wingate test (8.9 ± 1.4 vs. 7.3 ± 0.9 s; p = 0.003). No differences were detected in the fatigue index. In addition, while over time CMJ height and power diminished (ANOVA p < 0.001) and blood lactate levels increased (ANOVA p < 0.001), no supplementation effect was observed. Our findings indicate that while BJ supplementation improved performance at the 30-s cycling sprint, this improvement was not accompanied by differences in fatigue during or after this type of exercise.http://www.mdpi.com/2072-6643/10/9/1222nitric oxidenitratesmuscle powermuscle fatigue |
| spellingShingle | Eduardo Cuenca Pablo Jodra Alberto Pérez-López Liliana G. González-Rodríguez Sandro Fernandes da Silva Pablo Veiga-Herreros Raúl Domínguez Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over Study Nutrients nitric oxide nitrates muscle power muscle fatigue |
| title | Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over Study |
| title_full | Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over Study |
| title_fullStr | Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over Study |
| title_full_unstemmed | Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over Study |
| title_short | Effects of Beetroot Juice Supplementation on Performance and Fatigue in a 30-s All-Out Sprint Exercise: A Randomized, Double-Blind Cross-Over Study |
| title_sort | effects of beetroot juice supplementation on performance and fatigue in a 30 s all out sprint exercise a randomized double blind cross over study |
| topic | nitric oxide nitrates muscle power muscle fatigue |
| url | http://www.mdpi.com/2072-6643/10/9/1222 |
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