Effect of Inspiratory Muscle Training on the Performance of Handball Athletes

Study Overview
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Brief Summary
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This study investigated the effects of an inspiratory muscle training (IMT) program on the respiratory muscle strength and resistance and the aerobic physical performance (PP) of handball athletes. Nineteen male athletes took part in the study, allocated at random into the experimental group (EG, n=10) and the placebo group (PG, n=9), aged 19±1 and 22±5 years old, respectively. The respiratory muscle strength (RMS) was evaluated by measuring the maximum inspiratory and expiratory pressures (MIP and MEP, respectively), the muscular respiratory resistance was evaluated by maximum voluntary ventilation (MVV) and the aerobic PP by applying the cardiopulmonary exercise test. Subsequently the volunteers were submitted to an IMT protocol 5 times a week for 12 weeks.

Detailed Description
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The study was designed to evaluate the effects of a 12-week IMT program on the respiratory muscle strength and aerobic physical performance of handball players. Nineteen male athletes took part in the study, divided into the experimental group (EG), which took part in the evaluations, maintained their regular sporting activities and carried out the IMT (n=10), and the placebo group (PG), which took part in the evaluations, maintained their regular sporting activities and carried out an IMT with a load considered to be placebo (n=09), Experimental procedures were carried out by trained researchers and a qualified team. The evaluations and IMT were carried out during the competitive season, the training frequency being based on the competition program, following the traditional annual model. The athletes were submitted to an initial evaluation composed of measuring the respiratory muscle strength (RMS) using a manovacuometer, and an evaluation of the aerobic physical performance carried out using the cardiopulmonary exercise test (CPET). The athletes were reevaluated after 12 weeks for subsequent analysis and comparison with the initial values. All the subjects were previously informed about the experimental procedures, and signed a free and clarified term of consent. The project was approved by the Ethics in Research Committee of the Institution with the number 62/13.

Official Title
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Effect of Inspiratory Muscle Training on the Performance of Handball Athletes

Conditions
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Athletic Performance

Intervention / Treatment
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* Procedure: Device POWERbreathe


Participation Criteria
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Eligibility Criteria
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GENDER: Male AGE LIMITS: Minimum age: 18 years Maximum age:30 years Accepts Healthy Volunteers? YES Eligibility Criteria Inclusion criteria: male gender competition level athlete for at least one year regularly takes part in the training sessions Exclusion criteria: smoke shows signs of respiratory and/or cardiovascular diseases use supplements and/or medication that influences physical performance

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Placebo Comparator: placebo<br>Placebo group (PG) Nine athletes who maintained their regular sporting activities and were submitted to the IMT program for 12 weeks with a fixed load at 15% MIP, placebo protocol. | Procedure: Device POWERbreathe<br> <br> |
| Experimental: Experimental<br>Experimental group (EG) Ten athletes who maintained their regular sporting activities and were submitted to the IMT program for 12 weeks with a progressive load at 60%, 70% and 80 % of MIP. | Procedure: Device POWERbreathe<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Effect of inspiratory muscle training on the respiratory muscle strength performed using a manometer and measured with cmH20 | The evaluation of respiratory muscle strength (RMS) was performed using a manometer and measured with cmH20 | Finalized study (24 weeks) | 
| Effect of inspiratory muscle training on the muscular respiratory resistance evaluated by maximum voluntary ventilation (MVV) carried out with a spirometer | The muscular respiratory resistance was evaluated by maximum voluntary ventilation (MVV) carried out with a spirometer | Finalized study (24 weeks) | 
| Effect of inspiratory muscle training on the aerobic physical performance (PP) using cardiopulmonary test (CPT), and measured by VO2max | The evaluation of aerobic performance was carried out using cardiopulmonary test (CPT), and measured by VO2max | Finalized study (24 weeks) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Respiratory muscles, athletic performance, handball