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Recruiting NCT07481916

Inspiratory Muscle Warm-Up in Combat Athletes

No phase Interventional Sports Performance Respiratory Muscle Function Cardiorespiratory Responses

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: POWERbreathe, POWERbreathe.
Who it may be relevant to
Registry conditions: Sports Performance, Respiratory Muscle Function, Cardiorespiratory Responses. Basic parameters: 15 years — 22 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Turkey (Türkiye)
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

The Effect of Respiratory Muscle Warm-Up on Technical and Physiological Responses in Combat Athletes

Overview

The aim of this study is to investigate the effects of inspiratory muscle warm-up (IMW) on technical performance and physiological responses in combat athletes. A total of 20 volunteer athletes (10 males, 10 females), aged 15-22 years, registered with the Turkish Kickboxing and Muay Thai Federation, with at least two years of licensed sports experience and medal achievements at the national or international level, will be included in the study. The study will be conducted using a placebo-controlled, randomized, double-blind, crossover experimental design, in which participants will complete the control (general warm-up), placebo (15% MIP), and IMW (40% MIP) conditions in a random order. In each session, before and after the warm-up, pulmonary function tests (FVC, FEV1, FEV1/FVC, PEF), respiratory muscle strength (MIP, MEP), heart rate, perceived exertion, and dyspnea levels will be assessed. In addition, athletes will perform the Kickboxing Fitness Test (KFT), and the same measurements will be repeated during the rest intervals of the test and immediately after its completion. The IMW protocol will be performed using a POWERbreathe device at 40% of MIP, consisting of 2 sets of 30 breaths. Furthermore, maximal oxygen uptake (VO₂max) tests will be conducted to evaluate the athletes' general physiological capacity. This study is expected to provide original data for the field of sports sciences by demonstrating the potential contributions of inspiratory muscle warm-up to the improvement of technical skills and physiological capacity in combat athletes, and to generate practical scientific recommendations for coaches and athletes.

Interventions

  • Device POWERbreathe
    Inspiratory muscle warm-up will be performed using a POWERbreathe device at 40% of maximal inspiratory pressure (MIP), consisting of 2 sets of 30 breaths before the test procedures.
  • Device POWERbreathe
    Participants will perform sham inspiratory muscle warm-up using a POWERbreathe device at 15% of maximal inspiratory pressure (MIP) before the test procedures.

Primary outcome measures

  • Kickboxing Fitness Test performance [Time frame: Across 3 study days, measured immediately after each intervention session.]
  • Forced Vital Capacity (FVC) [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]
  • Forced Expiratory Volume in 1 Second (FEV1) [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]
  • Ratio of Forced Expiratory Volume in 1 Second to Forced Vital Capacity (FEV1/FVC) [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]
  • Peak Expiratory Flow (PEF) [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]
  • Maximal Inspiratory Pressure (MIP) [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]
  • Maximal Expiratory Pressure (MEP) [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]
  • Heart Rate (HR) [Time frame: Across 3 study days, throughout the entire test session]
  • Rating of perceived exertion (RPE) [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]
  • Perceived Dyspnea [Time frame: Across 3 study days, at baseline, immediately after the 15-minute standard warm-up, immediately before and after the intervention, during each 1-minute rest interval of the Kickboxing Fitness Test (every 2 minutes), and immediately after the test]

Eligibility criteria

Inclusion criteria

  • Male and female combat athletes aged 15 to 22 years
  • Registered with the Turkish Kickboxing and Muay Thai Federation
  • Regularly engaged in training
  • At least 2 years of licensed sports experience
  • Having won medals at the national or international level

Exclusion criteria

  • Presence of respiratory disease
  • Presence of cardiopulmonary disease

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: Yes

Study design

Allocation
Randomized
Model
Crossover
Masking
Double blind
Primary purpose
Other

Study locations

Turkey (Türkiye) · 1 center
  • Ondokuz Mayıs University — Samsun

Publications

  • Cirino C, Gobatto CA, Pinto AS, Torres RS, Hartz CS, Azevedo PHSM, Moreno MA, Manchado-Gobatto FB. Complex network model indicates a positive effect of inspiratory muscles pre-activation on performance parameters in a judo match. Sci Rep. 2021 May 27;11(1):11148. doi: 10.1038/s41598-021-90394-1. PMID 34045508
  • Cirino C, Marostegan AB, Hartz CS, Moreno MA, Gobatto CA, Manchado-Gobatto FB. Effects of Inspiratory Muscle Warm-Up on Physical Exercise: A Systematic Review. Biology (Basel). 2023 Feb 20;12(2):333. doi: 10.3390/biology12020333. PMID 36829608

Identifiers

NCT: NCT07481916 · OMU KAEK 2025/446

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗