Functional Evaluation in Obese Patients Before and After Sleeve Gastrectomy.

The ventilatory and cardiac function do not appear negatively affected by SG; thus, we hypothesize that the decrease in aerobic capacity could be due to alterations in peripheral muscles. This might in part be due to a loss of muscle mass, although our patients' muscle strength did not decrease. Pilot results from VO2-kinetics analysis seem to support the hypothesis of a deterioration of oxidative muscle metabolism after SG.