Efficacy of Inspiratory Muscle Training on Elite Swimmers

NCT03062735 | Unknown

• 1 other identifier: PEAKNORTE-01-0145-FEDER-000010
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Reactive Airways Dysfunction Syndrome (Disorder); Muscle Weakness; Dyspnea

Outcome Measures

Primary Outcomes (1)

• Swimming time trials performance

  Changes in time-trial swim performance

  twelve weeks

Study Arms (2)

Inspiratory Muscle Training

EXPERIMENTAL

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).

Other: Inspiratory Muscle Training

Sham Inspiratory Muscle Training

SHAM COMPARATOR

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.

Other: Sham Inspiratory Muscle Training

Interventions

Inspiratory Muscle Training OTHER

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.

Inspiratory Muscle Training

Sham Inspiratory Muscle Training OTHER

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.

Sham Inspiratory Muscle Training

Eligibility Criteria

• Age: 14 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• 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.

You may not qualify if:

• 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%.

Sponsors & Collaborators

• Universidade do Porto: lead

Study Sites (1)

Faculty of Medicine of Porto University

Porto, Porto District, 4200-319, Portugal

RECRUITING

MeSH Terms

Conditions

Muscle Weakness; Dyspnea

Condition Hierarchy (Ancestors)

Muscular Diseases; Musculoskeletal Diseases; Neuromuscular Manifestations; Neurologic Manifestations; Nervous System Diseases; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Signs and Symptoms; Respiration Disorders; Respiratory Tract Diseases; Signs and Symptoms, Respiratory

Study Officials

• André Moreira, MD, PhD

  Faculty of Medicine of the University of Porto

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Marisa Cunha, MSc

CONTACT

00351914955278; anamarisa_c@hotmail.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 20, 2017
• First Posted: February 23, 2017
• Study Start: February 6, 2017
• Primary Completion: April 1, 2017
• Study Completion: May 1, 2017
• Last Updated: February 23, 2017

Record last verified: 2016-11

Data Sharing

• IPD Sharing: Will not share

Locations

PT (1)