Figure 1.

Timeline of experimental events. Subjects participated in three separate 2-day trials. On two occasions, subjects expended 350 kcal during an exercise session in the afternoon of the first day. These two exercise trials were identical except for the intensity of exercise performed (50% VO₂peak [EX50] and 65% VO₂peak [EX65]). Subjects also completed a control trial in which they remained sedentary. CLAMP, hyperinsulinemic-euglycemic clamp; ¹³C-FA Inf, [1-¹³C]-palmitate isotope infusion; MTT, meal tolerance test; RMR, resting metabolic rate.