Aerobic and resistance training effects on energy intake: the STRRIDE-AT/RT study
Connie W Bales, Victoria H Hawk, Esther O Granville, Sarah B Rose, Tamlyn Shields, Lori Bateman, Leslie Willis, Lucy W Piner, Cris A Slentz, Joseph A Houmard, Dianne Gallup, Greg P Samsa, William E Kraus, Connie W Bales, Victoria H Hawk, Esther O Granville, Sarah B Rose, Tamlyn Shields, Lori Bateman, Leslie Willis, Lucy W Piner, Cris A Slentz, Joseph A Houmard, Dianne Gallup, Greg P Samsa, William E Kraus
Abstract
Purpose: Our study characterizes food and energy intake responses to long-term aerobic training (AT) and resistance training (RT) during a controlled 8-month trial.
Methods: In the STRRIDE-AT/RT trial, overweight/obese sedentary dyslipidemic men and women were randomized to AT (n = 39), RT (n = 38), or a combined treatment (AT/RT, n = 40) without any advice to change their food intakes. Quantitative food intake assessments and food frequency questionnaires were collected at baseline (before training) and after 8 months of training (end of training); body mass (BM) and fat-free mass (FFM) were also assessed.
Results: In AT and AT/RT, respectively, meaningful decreases in reported energy intake (REI) (-217 and -202 kcal, P < 0.001) and in intakes of fat (-14.9 and -14.9 g, P < 0.001, P = 0.004), protein (-8.3 and -10.7 g, P = 0.002, P < 0.001), and carbohydrate (-28.1 and -14.7 g, P = 0.001, P = 0.030) were found by food frequency questionnaires. REI relative to FFM decreased (P < 0.001 and P = 0.002), as did intakes of fat (-0.2 and -0.3 g, P = 0.003 and P = 0.014) and protein (-0.1 and -0.2 g, P = 0.005 and P < 0.001) in AT and AT/RT and carbohydrate (-0.5 g, P < 0.003) in AT only. For RT, REI by quantitative daily dietary intake decreased (-3.0 kcal.kg(-1) FFM, P = 0.046), as did fat intake (-0.2 g, P = 0.033). BM decreased in AT (-1.3 kg, P = 0.006) and AT/RT (-1.5 kg, P = 0.001) but was unchanged (0.6 kg, P = 0.176) in RT.
Conclusions: Previously sedentary subjects completing 8 months of AT or AT/RT reduced their intakes of calories and macronutrients and BM. In RT, fat intakes and REI (when expressed per FFM) decreased, BM was unchanged, and FFM increased.
Conflict of interest statement
Each author listed on this manuscript recognizes no conflict of interest with companies or manufacturers who may benefit from the results of the present study.
The authors recognize no conflicts of interest. The content is solely the responsibility of the authors and does not represent the official views of the endorsement of the American College of Sports Medicine.
Source: PubMed