Effects of Whey Protein Supplementation Prior to and Following Resistance Exercise on Body Composition and Training Responses
Yeram Park Ann Nutr Metab 2019;75(suppl 3):139
Background/Aims: The purpose of this study was to test that a protein blend supplement before and after resistance exercise training (RET) for 12 weeks, would be effective on muscular function.
Methods: Eighteen participants were randomly assigned to a placebo (PLA) or protein blend supplement (PRO) groups. All subjects followed the same training routine, 3 times per week for
12 weeks. RET consisted of lower body (barbell squat, dead lift, seated leg extension, and lying leg curl) and upper body (bench press, barbell rowing, preacher bench biceps curl, and dumbbell
shoulder press). A repetition was three sets of 10~12 times with 80% of one repetition maximum (1RM). Participants were provided with or without protein supplementation immediately before and after each exercise session. The protein supplement consisted 26.2 g of whey protein. Time course of change in body composition, blood hormonal response, muscle hypertrophy, muscular function (i.e., muscular strength and endurance) were monitored every 4 weeks. A two-way ANOVA with repeated measures (“exercise”דsupplement”) was used to analyze the effects of supplement.
Results: Protein supplement group had greater improvement in muscle hypertrophy and muscle function; higher muscle circumference, muscular strength and endurance than the placebo
group. There was a difference in mean change between groups at 12 weeks.
Conclusion: The findings from this study indicate that protein blend supplementation prior to and following resistance exercise can improve muscular function during resistance exercise
in untrained young males.