“Beetroot juice could increase performance in concurrent sessions, either by improving the number of repetitions performed in resistance exercises or reducing the 4-km running time,” the team of sports science and anti-doping researchers from Brazil and Spain hypothesized.
Published in the International Journal of Exercise Science, the research was supported by the Brazilian Council for Research Development (CNPq) and financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES).
Study details
The randomized, double-blind placebo-controlled crossover study administered either 500 ml of beetroot juice or a placebo to 20 well-trained healthy young men in two concurrent training sessions with different intra-session exercise sequences.
The first group performed aerobic exercise followed by resistance exercise, while the second reversed the order, starting with the bench press, lat pull-down and shoulder press resistance exercises followed by a 4-km aerobic run.
In each concurrent training session, participants were randomized to a placebo, a beetroot juice or a control session (without any substance) for a total of six exercise sessions. The beetroot juice used was processed for pure juice extraction before each data collection, and the placebo consisted of açaí-flavored maltodextrin with 20 ml of beetroot juice for flavor, consistency and color.
“Different from the previous studies, which describe that beetroot juice should be ingested between 2 and 2.5 h before the exercise due to the time of conversion of nitrate to nitric oxide (NO), we used a pre-workout beetroot juice intake time,” the study authors explained. Test beverages were administered one hour before training.
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October 04, 2022 at 09:00PM
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Beetroot juice improves running time during concurrent training: Study - NutraIngredients-usa.com
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