April 24, 2013 – Boston, Massachusetts

Effects of nutrient timing following resistance-exercise on changes in body composition in post-menopausal women participating in weight loss program
Mike Byrd, YP Jung, B Lockard, C Baetge, K Levers, E Galvan, A Jagim, S Simbo, JM Oliver, M Koozechian, D Khanna, R Dalton, B Sanchez, K Horrell, T Leopold, M Cho, J Fluckey, S Riechman, M Greenwood, J Hart, K Shimkus, W Gapinski, M Perez, B Bessire, C Rasmussen, R Kreider. Exercise & Sport Nutrition Lab, Texas A&M University, College Station, TX

21 sedentary women (59.8±5 yr, 43.7±3% body fat, 31.0±3 kg/m2) followed Curves Complete® energy-restricted diet (30% C, 45% P, and 25% F) while participating in a circuit resistance-training (3 d/wk) and walking (30 min, 3/d wk) program for 12-wks. Participants ingested a drink containing 15g of protein immediately following (I) or 2-hr after (D) exercise as part of their diet. Data were analyzed by MANOVA and are presented as changes from baseline after 12 wks for the I and D groups, respectively. While significant time effects were seen in body mass, fat mass, and body fat; no significant group x time effects were observed. However, participants in the D group generally experience more favorable changes in body mass (I -3.6±2.2; D -4.2±4.2, kg, p=0.59), fat mass (I -3.5±1.5; D -4.8±3.3, kg, p=0.32), FFM (I -0.0±1.7; D 1.1±1.3, kg, p=0.24), and body fat (I -2.8±1.9; D -4.4±3.1 %, p=0.25). No differences were seen among groups in REE (I -82±126; D -90±142 kcal/d, p=0.34). Additional research should examine whether nutrient timing affects training adaptations in post-menopausal women who participate in an energy deficit higher protein and low fat diet with resistance-exercise.
     Supported by Curves International, Waco, TX