期刊
NUTRIENTS
卷 12, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/nu12061880
关键词
intra-workout; muscle mass; strength; endurance; power
The purpose was to examine the effects of creatine supplementation during resistance training sessions on skeletal muscle mass and exercise performance in physically active young adults. Twenty-two participants were randomized to supplement with creatine (CR:n= 13, 26 +/- 4 yrs; 0.0055 g center dot kg(-1)post training set) or placebo (PLA:n= 9, 26 +/- 5 yrs; 0.0055 g center dot kg(-1)post training set) during six weeks of resistance training (18 sets per training session; five days per week). Prior to and following training and supplementation, measurements were made for muscle thickness (elbow and knee flexors/extensors, ankle plantarflexors), power (vertical jump and medicine ball throw), strength (leg press and chest press one-repetition maximum (1-RM)) and muscular endurance (one set of repetitions to volitional fatigue using 50% baseline 1-RM for leg press and chest press). The creatine group experienced a significant increase (p< 0.05) in leg press, chest press and total body strength and leg press endurance with no significant changes in the PLA group. Both groups improved total body endurance over time (p< 0.05), with greater gains observed in the creatine group. In conclusion, creatine ingestion during resistance training sessions is a viable strategy for improving muscle strength and some indices of muscle endurance in physically active young adults.
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