文章基本信息

标题：The Relationship between Resistance Exercise Performance and Ventilatory Efficiency after Beetroot Juice Intake in Well-Trained Athletes
本地全文：下载
作者：Noemí Serra-Payá ; Manuel Vicente Garnacho-Castaño ; Sergio Sánchez-Nuño 等
期刊名称：Nutrients
电子版ISSN：2072-6643
出版年度：2021
卷号：13
期号：4
页码：1094
DOI：10.3390/nu13041094
出版社：MDPI Publishing
摘要：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.
关键词：VE•VCO 2 −1 slope; oxygen uptake efficiency slope; partial pressure of end-tidal carbon dioxide; nitric oxide; nitrate; nitrite VE•VCO 2 −1 slope ; oxygen uptake efficiency slope ; partial pressure of end-tidal carbon dioxide ; nitric oxide ; nitrate ; nitrite