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High-Intensity Progressive Inspiratory Muscle Training in Class III Obesity and Obstructive Sleep Apnea
Sponsor: University of the State of Santa Catarina
Summary
The purpose of this study is to evaluate the feasibility and effects of a 12-week high-intensity progressive Inspiratory Muscle Training (IMT) program in individuals with Class III obesity (BMI ≥ 40 kg/m²) and obstructive sleep apnea (OSA). Using a single-case experimental design (SCED) with multiple baselines, the study will investigate whether this respiratory intervention can reduce the severity of sleep apnea, as measured by the Apnea-Hypopnea Index (AHI), and improve inspiratory muscle strength and sleep quality. Participants will perform daily training sessions using a resistive loading device (POWERbreathe), with intensity progressing from 40% to 90% of their maximum inspiratory pressure.
Official title: High-Intensity Progressive Inspiratory Muscle Training in Class III Obesity and Obstructive Sleep Apnea: Study Protocol for a Prospective Nonconcurrent Multiple-Baseline Single-Case Experimental Design With Stability-Based Phase Transition
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
10
Start Date
2026-05-01
Completion Date
2027-12-01
Last Updated
2026-03-23
Healthy Volunteers
No
Interventions
High-Intensity Progressive Inspiratory Muscle Training (IMT)
"The intervention consists of 12 weeks of inspiratory muscle training performed 5 days per week. Each session includes 30 breaths through a resistive loading device (POWERbreathe). The training intensity starts at 40% of the Maximum Inspiratory Pressure (MIP) and progressively increases to 90% of MIP. Training load is adjusted weekly based on new MIP measurements to ensure high-intensity stimulus. Compliance and adverse events will be monitored through a training diary."
Locations (1)
Santa Catarina State University - CEFID (Center of Health and Sport Sciences)
Florianópolis, Santa Catarina, Brazil