“…Randomized controlled trials have shown the effects of IMT on the inspiratory muscle strength and endurance in several diseases and demonstrated that this technique provides improvement in the peak oxygen consumption, quality of life and dyspnea 24,25 , and also reduces postoperative atelectasis, pneumonia and length of hospital stay 28 . Moreover, the use of IMT in patients undergoing bariatric surgery has been investigated in recent studies 18,26,27 , but the real effect of IMT in this population profile is still inconclusive.…”