Branched-chain amino acids do not improve muscle recovery from resistance exercise in untrained young adults

被引:7
作者
Estoche, Jose Maria [1 ]
Jacinto, Jeferson Lucas [1 ]
Roveratti, Mirela Casonato [1 ]
Gabardo, Juliano Moro [1 ]
Buzzachera, Cosme Franklim [1 ]
de Oliveira, Erick Prado [4 ]
Ribeiro, Alex Silva [1 ]
da Silva, Rubens Alexandre [1 ,2 ,3 ]
Aguiar, Andreo Fernando [1 ]
机构
[1] North Univ Parana UNOPAR, Ctr Res Hlth Sci, Ave Paris,675, BR-86041120 Londrina, Parana, Brazil
[2] UQAC, Univ McGill Offert Extens, Dept Sci Sante, Programme Physiotherapie, 555 Boul Unive, Quebec City, PQ G7H 5B8, Canada
[3] Lab Rech BioNR, 555 Boul Unive, Quebec City, PQ G7H 5B8, Canada
[4] Univ Fed Uberlandia, Sch Med, Uberlandia, MG, Brazil
关键词
Supplementation; Essential amino acids; Muscle function; Strength exercise; Muscle soreness; Muscle power; VISUAL ANALOG; SUPPLEMENTATION; DAMAGE; PROTEIN; SORENESS; PERFORMANCE; INGESTION; SCALE;
D O I
10.1007/s00726-019-02776-5
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The purpose of this study was to investigate the effects of BCAA supplementation on muscle recovery from resistance exercise (RE) in untrained young adults. Twenty-four young adults (24.0 +/- 4.3 years old) were assigned to 1 of 2 groups (n = 12 per group): a placebo-supplement group or a BCAA-supplement group. The groups were supplemented for a period of 5 days. On day 1 and 3, both groups underwent a RE session involving two lower body exercises (hack squat and leg press) and then were evaluated for muscle recovery on the 3 subsequent moments after the RE session [30 min (day 3), 24 h (day 4), and 48 h (day 5)]. The following indicators of muscle recovery were assessed: number of repetitions, rating of perceived exertion in the last RE session, muscle soreness and countermovement jump (CMJ) during recovery period (30 min, 24 h, and 48 h after RE session). Number of repetitions remained unchanged over time (time, P > 0.05), while the rating of perceived exertion increased (time, P < 0.05) over 3 sets, with no difference between groups (group x time, P > 0.05). Muscle soreness increased (time, P < 0.05) and jumping weight decreased (time, P < 0.05) at 30 min post-exercise and then progressively returned to baseline at 24 and 48 h post-exercise, with no difference between groups (group x time, P > 0.05). The results indicate that BCAA supplementation does not improve muscle recovery from RE in untrained young adults.
引用
收藏
页码:1387 / 1395
页数:9
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