effects of protein supplementation on muscular performance and resting hormonal changes in collegiate athletic

the effect of protein supplementation on athletic performance and hormonal changes was examined in 32 experienced collegiate strength/power athletes participating in a 12-week resistance training program. method: subjects were randomly assigned to either a protein supplement (pr; n = 22) or a placebo (pl; n = 10) group. during each testing session subjects were assessed for strength (one repetition maximum [1-rm] bench press and squat), power (wingat anaerobic power test) and body composition. resting blood samples were analyzed at weeks 0 (pre), 6 (mid) and 12 (post) for total testosterone, cortisol, growth hormone, and igf-1. result: there was seen no difference in energyintake between pr and pl (3034 ± 209 kcal and 3130 ± 266 kcal, respectively), but a significant difference in daily protein intake was seen between pr (2.00 g·kg body mass[bm]-1·d-1) and pl (1.24 g·kgbm-1·d-1). a greater change (p