Inspiratory Muscle Training (EMI) on Inspiratory Muscle Strength, Pulmonary Capacity and Performance in Soccer Players

Objective. To assess the effects of inspiratory muscle training (IMT) on lung function, inspiratory muscle strength and athletic performance in soccer players.

Method. Participants will be randomized into two groups: experimental and sham . The two groups will perform a protocol of 8 weeks of training (6 days / week) with the PowerBreathe device. The EG will use progressive resistance loads up to 80% of the MIP, while the SG will use the device with a minimum load (20% PImax) during the 8 weeks. All participants will have the following tests before and after the intervention and 3 months after the end of the program: spirometry (FVC, FEV1), PImax, biophotogrammetry, and fit 30/15 test. For the statistical analysis, a 2-factor variance analysis will be performed for repeated measures and Pearson's correlations. The statistical significance will be set with a value of p <0.05. The effect size will be calculated using the partial eta-square.