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Nutrients 2017, 9(12), 1360; https://doi.org/10.3390/nu9121360

Effects of Beetroot Juice Supplementation on a 30-s High-Intensity Inertial Cycle Ergometer Test

1
College of Health Sciences, Alfonso X el Sabio University, 28691 Madrid, Spain
2
GRI-AFIRS, School of Health Sciences, TecnoCampus-Pompeu Fabra University, 08005 Barcelona, Spain
3
Studies Research Group in Neuromuscular Responses (GEPRE N), University of Lavras, 37200-000 Lavras, Brazil
*
Author to whom correspondence should be addressed.
Received: 15 September 2017 / Revised: 29 November 2017 / Accepted: 11 December 2017 / Published: 15 December 2017
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Abstract

Background: Beetroot juice (BJ) is rich in inorganic nitrates and has proved effective at increasing blood nitric oxide (NO) levels. When used as a supplement BJ has shown an ergogenic effect on cardiorespiratory resistance exercise modalities, yet few studies have examined its impact on high intensity efforts. Objective: To assess the effects of BJ intake on anaerobic performance in a Wingate test. Methods: Fifteen trained men (age 21.46 ± 1.72 years, height 1.78 ± 0.07 cm and weight 76.90 ± 8.67 kg) undertook a 30-s maximum intensity test on an inertial cycle ergometer after drinking 70 mL of BJ (5.6 mmol NO3) or placebo. Results: Despite no impacts of BJ on the mean power recorded during the test, improvements were produced in peak power (6%) (p = 0.034), average power 0–15 s (6.7%) (p = 0.048) and final blood lactate levels (82.6%) (p < 0.001), and there was a trend towards a shorter time taken to attain peak power (−8.4%) (p = 0.055). Conclusions: Supplementation with BJ has an ergonomic effect on maximum power output and on average power during the first 15 s of a 30-s maximum intensity inertial cycle ergometer test. View Full-Text
Keywords: beet; nitrate; physical activity; sport; supplement beet; nitrate; physical activity; sport; supplement
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Domínguez, R.; Garnacho-Castaño, M.V.; Cuenca, E.; García-Fernández, P.; Muñoz-González, A.; de Jesús, F.; Lozano-Estevan, M.D.C.; Fernandes da Silva, S.; Veiga-Herreros, P.; Maté-Muñoz, J.L. Effects of Beetroot Juice Supplementation on a 30-s High-Intensity Inertial Cycle Ergometer Test. Nutrients 2017, 9, 1360.

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