The Effect of Inspiratory Muscle Warm-up

NCT07549802 | Enrolling By Invitation

• 1 other identifier: FIMT2025
• Study Type: interventional
• Target: 24
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this clinical study is to find out whether inspiratory muscle warm-up protocols are effective in volleyball athletes. The basic question it aims to answer is: Are inspiratory muscle warm-up protocols effective on performance in volleyball athletes? Researchers will compare different load intensities to determine the effect of optimal inspiratory muscle warm-up protocols. Participants will: Visit the research center at specific intervals for the application of protocols of different intensities. Participate in pre- and post-application evaluations.

Conditions

Volleyball Players

Keywords

respiratory system; performance; inspiratory warm up

Outcome Measures

Primary Outcomes (2)

• Counter Movement Jump (CMJ) Tes

  The CMJ test is a reliable test that measures an athlete's lower extremity strength and jumping performance. The CMJ test is performed by rapidly squatting down from the knees and jumping vertically with the knees fully extended and the torso in an upright position.

  Pre-intervention and immediately post-intervention at each session

• muscle oxygenation

  Muscle oxygenation will be assessed using a MOXY Monitor during the testing sessions. Changes in muscle oxygen saturation (SmO₂) will be recorded before and after the inspiratory muscle warm-up protocols to evaluate the acute effects of different intensity levels. This outcome will be used to compare the physiological responses associated with each protocol.

  Pre-intervention and immediately post-intervention at each session

Secondary Outcomes (1)

• S-indeks

  Pre-intervention and immediately post-intervention at each session

Study Arms (4)

Low-Intensity Inspiratory Muscle Warm-Up

EXPERIMENTAL

Participants will perform an inspiratory muscle warm-up protocol using the inspiratory muscle training device. The protocol will be applied at a low intensity corresponding to a predetermined percentage of maximal inspiratory pressure (MIP).

Other: Inspiratory Muscle Warm-Up

Moderate-Intensity Inspiratory Muscle Warm-Up

EXPERIMENTAL

Participants will perform an inspiratory muscle warm-up protocol using the inspiratory muscle training device. The protocol will be applied at a moderate intensity corresponding to a predetermined percentage of maximal inspiratory pressure (MIP).

Other: Inspiratory Muscle Warm-Up

High-Intensity Inspiratory Muscle Warm-Up

EXPERIMENTAL

Participants will perform an inspiratory muscle warm-up protocol using the inspiratory muscle training device. The protocol will be applied at a high intensity corresponding to a predetermined percentage of maximal inspiratory pressure (MIP).

Other: Inspiratory Muscle Warm-Up

Control group

SHAM COMPARATOR

Participants will perform an inspiratory breathing protocol using the inspiratory muscle training device with no external resistance applied.

Other: Inspiratory Muscle Warm-Up

Interventions

Inspiratory Muscle Warm-Up OTHER

Participants will perform inspiratory muscle warm-up protocols using the inspiratory muscle training device. The protocols will be applied at different intensity levels, including low, moderate, and high loads, as well as a no-load (sham) condition. Each protocol will be performed in separate sessions, and the order of application will be randomized. During each session, participants will complete a standardized inspiratory breathing procedure under supervision to ensure proper technique and consistency. This design will allow comparison of the acute effects of different inspiratory muscle warm-up intensities on performance outcomes.

Control group; High-Intensity Inspiratory Muscle Warm-Up; Low-Intensity Inspiratory Muscle Warm-Up; Moderate-Intensity Inspiratory Muscle Warm-Up

Eligibility Criteria

• Age: 13 Years - 20 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Ages 13-20
• Having played volleyball for at least 2 years
• Training at least 8-10 hours a week
• Patients who provide verbal and written informed consent

You may not qualify if:

• Having sustained an injury or undergone surgery in the upper or lower extremities
• Having had a lung or upper respiratory tract infection two weeks prior to the study
• Having a chronic respiratory condition

Sponsors & Collaborators

• Uskudar University: lead

Study Sites (1)

Uskudar University Research Center

Istanbul, Ümraniye, 34768, Turkey (Türkiye)

Location

Related Publications (1)

• Barnes KR, Ludge AR. Inspiratory Muscle Warm-up Improves 3,200-m Running Performance in Distance Runners. J Strength Cond Res. 2021 Jun 1;35(6):1739-1747. doi: 10.1519/JSC.0000000000002974.

  PMID: 30640308 BACKGROUND

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Asst. Prof.

Study Record Dates

• First Submitted: April 10, 2026
• First Posted: April 24, 2026
• Study Start: April 20, 2026
• Primary Completion: April 25, 2026
• Study Completion: May 1, 2026
• Last Updated: April 24, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)