The Effects of Inspiratory Muscle Training on Endurance Performance in Trained Athletes Under Normoxic and Hypoxic Conditions: A Gender-based Comprehensive Study
- Conditions
- Hypoxia, Altitude
- Registration Number
- NCT06121128
- Lead Sponsor
- University of Lausanne
- Brief Summary
The POWERbreathe™ Plus: an Inspiratory Muscle Training device (IMT) with adjustable resistance.
Intervention lasts 4 weeks, with a frequency of 6 days/week, 2 series of 30 inspirations in the morning and evening.
Resistance based on 60% of the Pressure Maximal Inspiratory (PMI). Progressive increase in resistance every week.
Four laboratory visits: 2 pre-tests and 2 post-tests. Each pre- / post- test will go under normoxic and hypoxic conditions.
Measurements include Pulmonary functions (spirometry test); blood microcirculation (vascular occlusion test); gas exchanges (e.g. VO2max), cardiac parameters, heart rate variability, maximal aerobic power (incremental and time limit test)
- Detailed Description
The POWERbreathe™ Plus: an Inspiratory Muscle Training device (IMT) with adjustable resistance.
Intervention lasts 4 weeks, with a frequency of 6 days/week, 2 series of 30 inspirations in the morning and evening.
Resistance based on 60% of the Pressure Maximal Inspiratory (PMI). Progressive increase in resistance every week.
Four laboratory visits: 2 pre-tests and 2 post-tests. Each pre- / post- test will go under normoxic and hypoxic conditions.
Measurements include Pulmonary functions (spirometry test); blood microcirculation (vascular occlusion test); gas exchanges (e.g. VO2max), cardiac parameters, heart rate variability, maximal aerobic power (incremental and time limit test)
Recruitment & Eligibility
- Status
- NOT_YET_RECRUITING
- Sex
- All
- Target Recruitment
- 48
- Inclusion: endurance trained athletes between 18 and 44 years old
cardiovascular, metabolic and respiratory diseases, smoking history, prescription medication (Two medication families are known to interfere with FC:
- Calcium channel blockers
- Beta-blockers
Two families are known to interfere during spirometry measurements:
- Inhaled beta-agonists
- Inhaled glucocorticoids)
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method sex-differences One week prior and in the week immediately following the intervention Primary objective:
To assess the change of a time limit duration in ergocycle after 4 weeks of inspiratory muscle training (IMT) between males and females.Effect in hypoxia One week prior and in the week immediately following the intervention Secondary objective:
To assess the change of a time limit duration in ergocycle after 4 weeks of inspiratory muscle training (IMT) between hypoxia and normoxia.
- Secondary Outcome Measures
Name Time Method
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