A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes

Gustavo Vieira de Oliveira; Luiz Diniz do Nascimento; Mônica Volino-Souza; Otávio do Couto Vellozo; Thiago Silveira Alvares

doi:10.5114/biolsport.2020.92518

eISSN: 2083-1862
ISSN: 0860-021X

Biology of Sport

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abstract:

Original paper

A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes

Gustavo Vieira de Oliveira

^{1, 2}

,

Luiz Alberto Diniz do Nascimento

²

,

Mônica Volino-Souza

^{1, 3}

,

Otávio do Couto Vellozo

¹

,

Thiago Silveira Alvares

^{1, 2, 3}

Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, RJ, 27971-525, Brazil
Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, RJ, 27930-560, Brazil
Posgraduate Program in Food Science, Chemical Institute, Federal University of Rio de Janeiro, RJ, 21941-909, Brazil

Biol Sport. 2020;37(1):93-99.

DOI: https://doi.org/10.5114/biolsport.2020.92518

Online publish date: 2020/02/07

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AMA

Vieira de Oliveira G, Diniz do Nascimento LA, Volino-Souza M, do Couto Vellozo O, Silveira Alvares T. A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes. Biology of Sport. 2020;37(1):93-99. doi:10.5114/biolsport.2020.92518.

APA

Vieira de Oliveira, G., Diniz do Nascimento, L. A., Volino-Souza, M., do Couto Vellozo, O.,  & Silveira Alvares, T. (2020). A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes. Biology of Sport, 37(1), 93-99. https://doi.org/10.5114/biolsport.2020.92518

Chicago

Vieira de Oliveira, Gustavo, Luiz A Diniz do Nascimento, Mônica Volino-Souza, Otávio do Couto Vellozo,  and Thiago Silveira Alvares. 2020. "A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes". Biology of Sport 37 (1): 93-99. doi:10.5114/biolsport.2020.92518.

Harvard

Vieira de Oliveira, G., Diniz do Nascimento, L., Volino-Souza, M., do Couto Vellozo, O.,  and Silveira Alvares, T. (2020). A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes. Biology of Sport, 37(1), pp.93-99. https://doi.org/10.5114/biolsport.2020.92518

MLA

Vieira de Oliveira, Gustavo et al. "A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes." Biology of Sport, vol. 37, no. 1, 2020, pp. 93-99. doi:10.5114/biolsport.2020.92518.

Vancouver

Vieira de Oliveira G, Diniz do Nascimento L, Volino-Souza M, do Couto Vellozo O, Silveira Alvares T. A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes. Biology of Sport. 2020;37(1):93-99. doi:10.5114/biolsport.2020.92518.

PlumX metrics:

Although the effect of beetroot supplementation on exercise performance has been widely demonstrated to improve the performance of cyclists, runners, and swimmers, its effect on combat sports remains inconclusive. The present study assessed the effect of beetroot-based gel (BG) supplementation on maximal voluntary contraction (MVC), exercise time until fatigue (ETF), muscle O2 saturation (SmO2), and blood volume (tHb) in response to handgrip isotonic exercise (HIE) in recreational combat sport athletes. In a randomized, crossover, double-blind study, 14 combat sports athletes performed three sets of HIE (at 40% MVC) until fatigue after BG or nitrate-depleted gel (PLA) supplementation, in which forearm SmO2 and tHb were continuously monitored using near-infrared spectroscopy. MVC was evaluated at baseline and 20 min after HIE. MVC values were analysed as the change from baseline values (ΔMVC). There was a significant increase accompanied by a large effect size in ΔMVC (p = 0.036, d = 0.94) after HIE in the BG condition compared to PLA. However, there were no changes in SmO2 parameters (p> 0.05), tHb (p> 0.05) or ETF (p = 0.161) throughout the three sets of HIE. Additionally, a trivial to small effect size was observed in near-infrared spectroscopy (NIRS) parameters and ETF (d = ≤ 0.2 to 0.5). Therefore, a single dose of beetroot gel supplementation may be considered as a good nutritional strategy to improve strength recovery in combat sports athletes.

keywords:

A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes

Gustavo Vieira de Oliveira 1, 2 , Luiz Alberto Diniz do Nascimento 2 , Mônica Volino-Souza 1, 3 , Otávio do Couto Vellozo 1 , Thiago Silveira Alvares 1, 2, 3

Muscle isometric strength, Sport nutrition, Combat sport, Muscle oxygenation, Handgrip exercise

Gustavo Vieira de Oliveira

^{1, 2}

,

Luiz Alberto Diniz do Nascimento

²

,

Mônica Volino-Souza

^{1, 3}

,

Otávio do Couto Vellozo

¹

,

Thiago Silveira Alvares

^{1, 2, 3}