Preoperative RESpiratory Training and MOBilization to Prevent Postoperative Pulmonary Complications in Patients Undergoing Thoracic Surgery

Patients will do inspiratory muscle training via a flow resistive device. Priorly, maximum inspiratory pressure will be measured. Afterwards, the training device will be set to 10% increased value of maximum inspiratory pressure (MIP), and the training will be completed two times and 30 repetitions a day during preoperative 7 days. Meanwhile patients will be advised to walk 5000 steps a day during the intervention period.