Respiratory Rehabilitation Based on Eccentric Exercice on Treadmill After Thoracic Surgery

Thoracic surgeries are frequent and pulmonary rehabilitation is essential, since one of the problems that these patients present is dyspnea when performing aerobic exercise, which limits improvement and in some cases causes them to abandon physical exercise. Thanks to carrying out a correct effort retraining program, combining respiratory physiotherapy with therapeutic exercise, patients with respiratory pathologies manage to improve lung capacity and ventilatory mechanics, increase muscle strength and aerobic resistance, prevent long- term complications, reduce fatigue and, ultimately, improve your quality of life. Likewise, it is important to find the most appropriate type of muscular work that produces more benefits in the short and medium term to optimize our resources.The objective of the study is to demonstrate the effectiveness of eccentric training in patients who have undergone thoracic surgery, in terms of strength, lung capacity, functionality and quality of health in the short and medium term. For this purpose, a randomized clinical trial has been designed, with a blinded examiner, following the CONSORT guideline for clinical trials and the ethical principles of the Declaration of Helsinki. A total sample of 57 subjects has been estimated. The study is aimed at patients after scheduled thoracic surgery. A program of 12 group sessions spread over 4 weeks will be carried out. Each of them will last 75 minutes and will include strength and respiratory physiotherapy exercises, common to all subjects. Aerobic interval training will depend on the group assigned: treadmill with negative slope (experimental group), treadmill with positive slope (control group 1) or cycle ergometer (control group 2). On the first and last day of treatment, as well as one month after completing the intervention, the following variables will be measured: thickness, cross-sectional area and ultrasound intensity of the rectus femoris; diaphragmatic excursion and thickness; 6 minut