Basal metabolic rate
After overnight fasting, BMR was measured in the morning (measurements between 0800 and 1000 a.m.), using an indirect open-circuit computerized calorimetry (Vmax 29, Sensor Medics, Yorba Linda, Ca, USA) and a rigid, transparent, and ventilated canopy. Before each test, calibration was performed with a reference gas mixture (95.00% O