Rayssa Sousa-Silva, J. Cholewa, Kassiana de Araújo Pessôa
Feb 22, 2023
Citations
1
Influential Citations
1
Citations
Quality indicators
Journal
Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme
Abstract
This study aimed to compare the effects of an 8-week Creatine (Cr) or placebo (PL) supplementation on muscle strength, thickness, endurance, and body composition employing different training paradigms with blood flow restriction (BFR) vs. traditional resistance training (TRAD). Seventeen healthy males were randomized between the PL (n = 9) or Cr (n = 8) groups. Participants were trained unilaterally utilizing a within-between subject bicep curl exercise where each arm was allocated to TRAD or BFR for eight weeks. Muscular strength, thickness, endurance, and body composition were evaluated. Creatine supplementation promoted increases in muscle thickness in TRAD and BFR, compared to their placebo counterparts, however, without significant difference between treatments (p=0.349). TRAD training-induced increases in maximum strength (1RM) compared to BFR after eight weeks of training (p = 0.021). Repetitions to failure at 30% of 1RM were increased in the BFR-Cr group compared to TRAD-Cr (p = 0.004). Repetitions to failure at 70% 1RM were increased from weeks 0-4 (p<0.05) and 4-8 (p<0.05) in all groups. Creatine supplementation exerted a hypertrophic effect when utilized with TRAD and BFR paradigms and increased muscle performance at 30% 1RM when utilized in conjunction with BFR. Therefore, creatine supplementation seems to amplify muscle adaptation following a BFR program.