Acute Effects of Inspiratory Muscle Load on Diaphragmatic Recovery in Athletes

Not Applicable

Not yet recruiting

• Conditions: Sports Physical Therapy; Healthy; Athletic Injuries

• Registration Number: NCT07046637
• Lead Sponsor: Sierra Varona SL

Brief Summary

This randomized controlled trial investigates the acute effects of inspiratory muscle warm-up and fatigue on diaphragmatic function in professional basketball players. Using ultrasound imaging and maximal inspiratory pressure (PIM) assessment, the study evaluates changes in diaphragmatic thickness and respiratory strength before and after specific inspiratory muscle loading protocols. Findings aim to clarify the short-term impact of these interventions on diaphragmatic recovery capacity, with potential implications for respiratory training, performance enhancement, and injury prevention strategies in elite athletic populations.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2025-06-29
• Study First Submitted QC: 2025-06-29
• Status Verified: 2025-07
• Study First Posted: 2025-07-01
• Last Update Submitted: 2025-07-01
• Last Update Posted: 2025-07-03
• Study Start: 2025-07-10
• Primary Completion: 2025-08-05
• Study Completion: 2025-08-12

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 38

Inclusion Criteria

• Male and female professional basketball players aged between 18 and 35 years.
• Holding a valid federation license at the autonomous or higher competitive level.
• A minimum of 3 consecutive seasons of competition in official FEB, FIBA, or equivalent regional leagues.
• Regular training frequency of ≥4 sessions per week over the past 6 months.
• No previous experience with inspiratory muscle training.
• Ability to understand study procedures and provide written informed consent.

Exclusion Criteria

• History of chronic respiratory, neuromuscular, or cardiovascular disease.
• Musculoskeletal injury limiting inspiratory effort or physical participation (current or within the past three months).
• Previous thoracic or abdominal surgery.
• Current smokers.
• Use of pharmacological treatments that could affect respiratory or muscular function.
• Participation in another interventional study within the past 4 weeks.
• Inability to understand or follow study instructions.
• Tympanic membrane perforation or middle/inner ear pathology.
• Pregnancy or postpartum period within the last 6 months.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Maximal inspiratory pressure	Immediately before intervention, immediately after intervention, 15 minutes post intervention and 30 minutes post intervention	It will be assessed using a Breathare MIP/MEP® (GH Innotek Co., Ltd., Busan, Republic of Korea).The Breathare MIP/MEP® is likely a respiratory pressure meter or manometer designed for measuring respiratory muscle strength. It typically includes a mouthpiece connected to a pressure sensor, and the device measures the force or pressure generated during respiratory maneuvers.; The person will be instructed to take a maximal deep breath in, and then exhale to residual volume. After that, they will be asked to inhale forcefully against the resistance provided by the Breathare MIP/MEP®. This measures the strength of the inspiratory muscles.; The measures will be expressed in cmH2O.

Secondary Outcome Measures

Name	Time	Method
Diaphragmatic thickness and thickening fraction	Immediately before intervention, immediately after intervention, 15 minutes post intervention and 30 minutes post intervention	The linear array probe with a frequency of 3.0-10 megahertz (MHz) is placed perpendicularly to chest wall close to the mid-axillary line which is between the 8th and 10th intercostal space. The thickness of diaphragm is measured at the end of expiration and maximum inspiration for three times and the average values were recorded.; The measures will be expressed in centimeters.