Efficacy of Inspiratory Muscle Training on Elite Swimmers (PEAK)
Reactive Airways Dysfunction Syndrome (Disorder), Muscle Weakness, Dyspnea
About this trial
This is an interventional other trial for Reactive Airways Dysfunction Syndrome (Disorder)
Eligibility Criteria
Inclusion Criteria:
- Healthy elite swimmers engaged in competitive training for a minimum period of three years;
- Individuals with no disability;
- Individuals aged between 14 and 40 years.
Exclusion Criteria:
- Individuals presenting co-morbidities or physical impairment that affects regular training;
- Smokers;
- Athletes already in a regular respiratory muscle training program
- Individuals with a predicted forced expiratory volume in the first second (FEV1) below 60%.
Sites / Locations
- Faculty of Medicine of Porto UniversityRecruiting
Arms of the Study
Arm 1
Arm 2
Experimental
Sham Comparator
Inspiratory Muscle Training
Sham Inspiratory Muscle Training
Inspiratory Muscle Training intervention (Sham-IMT) groups during a 3 months training season. A pressure threshold device (POWERbreathe - HaB International Ltd., UK) will be used to IMT. The IMT group will perform 30 inspiratory efforts, 5 times a week, twice daily, for 12 weeks, against a pressure threshold load equivalent to 50% of maximal inspiratory pressure (MIP).
Sham-IMT group will follow a similar protocol, except the inspiratory effort that will be made against 15% MIP. The duration of each IMT session will be 30 inspirations. After the initial setting of training loads, the IMT group will be instructed to periodically increase load so that only 30 maneuvers could be completed. The Sham-IMT group will not receive these instructions. All the IMT sessions, in both groups will take place before swimming training and will be supervised throughout the intervention period to ensure that technique and load will be appropriate.