Efficacy of Inspiratory Muscle Training on Elite Swimmers

Muscle Weakness Clinical Trial

— PEAK  

Official title:

Protocol for a Randomized Controlled Trial Evaluating the Efficacy of Inspiratory Muscle Training on Swimming Performance, Airway Dysfunction and Perceived Breathlessness in Elite Swimmers

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT03062735
• Other study ID #: PEAKNORTE-01-0145-FEDER-000010
• Status: Recruiting
• Phase: N/A
• First received: February 20, 2017
• Last updated: February 20, 2017
• Start date: February 6, 2017
• Est. completion date: May 2017

Study information

• Verified date: November 2016
• Source: Universidade do Porto
• Contact: Marisa Cunha, MSc
• Phone: 00351914955278
• Email: anamarisa_c[@]hotmail.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study is a randomized controlled trial on the efficacy of inspiratory muscle training on swimming performance, airway dysfunction and perceived breathlessness in elite swimmers.

Description:

Only a few studies have assessed the impact of Inspiratory Muscle Training (IMT) on swim performance with unclear and inconsistent results. This study aims to evaluate the effect of a 12-week IMT program in swimming performance, airway dysfunction and perceived breathlessness among elite swimmers. Participants will be recruited from the elite competitive Futebol Clube do Porto swimming team. After consent, individuals will be randomly allocated into the IMT or Sham-IMT group. A pressure threshold device will be used to perform the inspiratory training. The IMT group will perform 30 inspiratory efforts, 5 times a week, twice a day, against a pressure threshold load equivalent to 50% of maximal inspiratory pressure (MIP). Sham-IMT group will follow a similar protocol, except for the inspiratory effort that will be made against 15% of MIP. Measures of lung function, swimming performance, airway dysfunction, inspiratory muscle strength and perceived breathlessness will be assessed at the beginning and then in 4 weeks intervals until the end of study period. All outcome measures will be assessed by an investigator who will be not involved in the intervention process. Data will be expressed as mean ± standard deviation (SD) and respective 95% confidence interval. The significance level will be 5% (p˂0.05).

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 40
• Est. completion date: May 2017
• Est. primary completion date: April 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 14 Years to 40 Years

Eligibility

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%.

Related Conditions & MeSH terms

• Dyspnea
• Muscle Weakness
• Paresis
• Reactive Airways Dysfunction Syndrome (Disorder)

Intervention

Other:
• Inspiratory Muscle Training
The Inspiratory Muscle Training (IMT) group will perform 30 inspiratory efforts, 5 times a week, twice a day, for 12 weeks, against a pressure threshold load equivalent to 50% of maximal inspiratory pressure.
• Sham Inspiratory Muscle Training
The Sham Inspiratory Muscle Training (Sham-IMT) group will perform 30 inspiratory efforts, 5 times a week, twice a day, for 12 weeks, against a pressure threshold load equivalent to 15% of maximal inspiratory pressure.

Locations

Country	Name	City	State
Portugal	Faculty of Medicine of Porto University	Porto

Sponsors (1)

Lead Sponsor	Collaborator
Universidade do Porto

Country where clinical trial is conducted

Portugal, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Swimming time trials performance	Changes in time-trial swim performance	twelve weeks