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Article Publish Status: FREE
Abstract Title:

Acute Effects of Beetroot Juice Supplements on Resistance Training: A Randomized Double-Blind Crossover.

Abstract Source:

Nutrients. 2020 Jun 28 ;12(7). Epub 2020 Jun 28. PMID: 32605284

Abstract Author(s):

Antonio Ranchal-Sanchez, Victor Manuel Diaz-Bernier, Candelaria Alonso De La Florida-Villagran, Francisco Jesus Llorente-Cantarero, Julian Campos-Perez, Jose Manuel Jurado-Castro

Article Affiliation:

Antonio Ranchal-Sanchez

Abstract:

The ingestion of beetroot juice (BJ) has been associated with improvements in physical performance in endurance sports, however the literature on resistance training (RT) is scarce. The aim of this study was to investigate the acute effects of BJ compared to a placebo (PLA) on muscular endurance and movement concentric velocity during RT. Twelve healthy men performed an incremental RT test (back squat and bench press) with three sets, at 60%, 70%, and 80% of their repetition maximum (1-RM). Movement velocity variables, total number of repetitions performed until concentric failure, blood lactate, and ratings of perceived effort post-training were measured. A higher number of repetitions were recorded with BJ compared to those with PLA (13.8± 14.4;<0.01; effect size (ES) = 0.6). Differences were found at 60% 1-RM (9± 10;<0.05; ES = 0.61) and 70% 1-RM (3.1± 4.8;<0.05; ES = 0.49), however, no differences were found at 80% 1-RM (1.7± 1;= 0.12; ES = 0.41). A greater number of repetitions was performed in back squat (13.4± 13;<0.01; ES = 0.77), but no differences were observed in bench press (0.4± 5.1;= 0.785; ES = 0.03). No differences were found for the rest of the variables (>0.05). Acute supplementation of BJ improved muscular endurance performance in RT.

Study Type : Human Study

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