Table 1 Studies investigating the effects of BCAA supplementation of RE-based muscle damage in humans
Study | Exercise Protocol | Supplementation Protocol | Results |
|---|---|---|---|
Shimomura et al. [29] | Squat (7 sets of 20 repetitions) | 5.5 g of BCAA within 1.0 g of green tea 15 min before exercise | Attenuation of exercise-induced serum BCAA oxidation. |
Shimomura et al. [30] | Squat (7 sets of 20 repetitions) | 5.0 g of BCAA 15 min before exercise | Reduction of peak time of muscle soreness induced by exercise. |
Nosaka et al.[3] | 900 actions (30 min) of arm curl with 1.80 to 3.44 kg of range of workload | BCAA-enriched amino acid mixture (60% of the essential amino acids) | Reduction of serum CK, myoglobin, and muscle soreness. No differences in isometric MVC. |
Sharp & Pearson [31] | Whole body RE (3 sets of 8 RM, 8 exercises) | BCAA (1.8 g of leucine, 0.75 g of isoleucine, and 0.75 g of valine) 3 weeks before and 1 week during exercise protocol | Reduction of serum CK. |
Jackman et al. [32] | Eccentric exercise (12 sets of 10 repetitions at 120% of concentric 1RM) | ~ 7.0 g of BCAA/day (divided in 4 doses) on the following 2 days after exercise | No differences in serum CK and myoglobin; Attenuation in exercise-induced muscle soreness. |