The Relationship between Resistance Exercise Performance and Ventilatory Efficiency after Beetroot Juice Intake in Well-Trained Athletes

Autor: Alba Pardo Fernández, Adrián García-Fresneda, Luciana Moizé Arcone, Manuel Vicente Garnacho-Castaño, Lluis Albesa-Albiol, Manuel Gomis Bataller, Jorge Castizo-Olier, Xavier Viñals, Noemi Serra-Paya, Lorena Molina-Raya, Sergio Sánchez-Nuño, Montserrat Girabent-Farrés
Rok vydání: 2021
Předmět:
Zdroj: Nutrients
Volume 13
Issue 4
Nutrients, Vol 13, Iss 1094, p 1094 (2021)
ISSN: 2072-6643
Popis: The assessment of ventilatory efficiency is critical to understanding the matching of ventilation (VE) and perfusion in the lungs during exercise. This study aimed to establish a causal physiological relationship between ventilatory efficiency and resistance exercise performance after beetroot juice (BJ) intake. Eleven well-trained males performed a resistance exercise test after drinking 140 mL of BJ (~12.8 mmol NO3−) or a placebo (PL). Ventilatory efficiency was assessed by the VE•VCO2−1 slope, the oxygen uptake efficiency slope and the partial pressure of end-tidal carbon dioxide (PetCO2). The two experimental conditions were controlled using a randomized, double-blind crossover design. The resistance exercise test involved repeating the same routine twice, which consisted of wall ball shots plus a full squat (FS) with a 3 min rest or without a rest between the two exercises. A higher weight lifted was detected in the FS exercise after BJ intake compared with the PL during the first routine (p = 0.004). BJ improved the VE•VCO2−1 slope and the PetCO2 during the FS exercise in the first routine and at rest (p <
0.05). BJ intake improved the VE•VCO2−1 slope and the PetCO2 coinciding with the resistance exercise performance. The ergogenic effect of BJ could be induced under aerobic conditions at rest.
Databáze: OpenAIRE