A prospective randomized clinical trial of patients undergoing laparoscopic sleeve gastrectomy (LSG) or laparoscopic Roux-en-Y gastric bypass (RYGB) during 2014 was performed.~Patients were randomly assigned using a random-number table into 3 groups: those patients undergoing percutaneous electrostimulation (PENS) of the pectoral muscle combined with specific training (Group 1), those patients doing the specific training alone (Group 2) and those patients without any specific treatment (Group 3).~The assigned treatment began 15 days after surgery and was maintained during 12 weeks.
A prospective randomized clinical trial of patients undergoing bariatric surgery.~Patients were randomly assigned into 3 groups: those patients undergoing percutaneous electrostimulation (PENS) of the pectoral muscle combined with specific training (Group 1), those patients doing the specific training alone (Group 2) and those patients without any specific treatment (Group 3).~The assigned treatment began 15 days after surgery and was maintained during 12 weeks.