EFFECTS OF INGESTING SUPPLEMENTS DESIGNED TO PROMOTE LEAN TISSUE ACCRETION ON BODY-COMPOSITION DURING RESISTANCE TRAINING

This study examined the effects of ingesting nutritional supplements d esigned to promote lean tissue accretion on body composition alteratio ns during resistance training. Twenty-eight resistance-trained males b lindly supplemented their diets with maltodextrin (M), Gainers Fuel(R) 1000 (GF), or Phosphagain(TM) (P). No significant differences were ob served in absolute or relative total body water among groups. Energy i ntake and body weight significantly increased in all groups combined t hroughout the study with no group or interaction differences observed. Dual energy x-ray absorptiometry-determined body mass significantly i ncreased in each group throughout the study with significantly greater gains observed in the GF and P groups. Lean tissue mass (excluding bo ne) gain was significantly greater in the P group, while fat mass and percent body fat were significantly increased in the GF group. Results indicate that total body weight significantly increased in each group and that P supplementation resulted in significantly greater gains in lean tissue mass during resistance training.