Waist circumference changes were -0.2 ( 95 % CI , -1.7 to 1.2 ) cm in the control group , -3.0 ( 95 % CI , -4.4 to -1.6 ) cm in the aerobic group ( P = .006 vs controls ) , -2.2 ( 95 % CI -3.7 to -0.8 ) cm in the resistance training group ( P = .048 vs controls ) , and -4.1 ( 95 % CI , -5.5 to -2.7 ) cm in the combined training group .