Acute Effects of Inspiratory Muscle Load on Diaphragmatic Recovery in Athletes

NCT ID: NCT07046637

Last Updated: 2025-07-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

38 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-07-10

Study Completion Date

2025-08-12

Brief Summary

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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

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Conditions

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Sports Physical Therapy Athletic Injuries Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors
Single-blind

Study Groups

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Inspiratory muscle fatigue group

The EG (experimental group) will perform the diaphragmatic fatigue protocol using a specific inspiratory endurance test, in which volunteers, one-on-one, and in a single session, will breathe against submaximal inspiratory loads equivalent to 60% of their MIP (Maximum Inspiratory Pressure) through a threshold valve device. The participants will follow a free pattern of breathing until they are unable to establish flow during at least 3 maximum inspiratory efforts.

Group Type EXPERIMENTAL

Inspiratory muscle fatigue group

Intervention Type DEVICE

The subjects will perform deep inspirations against a threshold device with varying resistances

Inspiratory muscle warm-up group

The inspiratory muscle warm-up group will perform the protocol of 2 sets of 30 repetitions at 40% of their MIP, one-on-one, and in a single session, breathing against submaximal inspiratory loads using a threshold valve device. The participants will follow a free pattern of breathing until complete the protocol.

Group Type ACTIVE_COMPARATOR

Inspiratory muscle warm-up group

Intervention Type DEVICE

The subjects will perform deep inspirations against a threshold device with varying resistances

Interventions

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Inspiratory muscle fatigue group

The subjects will perform deep inspirations against a threshold device with varying resistances

Intervention Type DEVICE

Inspiratory muscle warm-up group

The subjects will perform deep inspirations against a threshold device with varying resistances

Intervention Type DEVICE

Other Intervention Names

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Inspiratory muscle fatigue Inspiratory muscle warm-up

Eligibility Criteria

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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.
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Universidad Francisco de Vitoria

OTHER

Sponsor Role collaborator

Sierra Varona SL

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Central Contacts

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Arturo Ladriñan, PhD

Role: CONTACT

925 26 88 00

eva V sanz

Role: CONTACT

925 23 10 52

Other Identifiers

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020

Identifier Type: -

Identifier Source: org_study_id

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