Volleyball PlayersNCT07549802
The Effect of Inspiratory Muscle Warm-up
A study testing Inspiratory Muscle Warm-Up in people with Volleyball Players, run by Uskudar University at 1 site in Turkey (Türkiye).
Trial 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… Read more about this study
- Who is it for?
- Ages 13 to 20 yearsHealthy volunteers can take part
- Conditions the study is for
- Volleyball Players
- What is being tested?
- Inspiratory Muscle Warm-Up
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 24 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 20 Apr 2026to 1 May 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 13 to 20 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- 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
Who cannot join
- 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
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Uskudar University Research Center
Istanbul, Ümraniye, 34768
About this study
Official title: The Effect of Inspiratory Muscle Warm-up Protocols on Volleyball Players
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.
Read the detailed description
This study aims to investigate the effects of inspiratory muscle warm-up (IMW) protocols performed at different load intensities on performance outcomes in volleyball athletes. Inspiratory muscle warm-up has been suggested to enhance respiratory muscle function, potentially improving exercise performance; however, the optimal load intensity for maximizing these effects in volleyball players remains unclear.
In this study, participants will be exposed to inspiratory muscle warm-up protocols at varying intensities to determine the most effective protocol. The protocols will be applied at different sessions with appropriate rest intervals between applications to minimize carryover effects.
Before and after each protocol application, participants will undergo a series of performance assessments. These evaluations are expected to include measures related to physical performance relevant to volleyball, such as functional capacity, respiratory parameters, and/or sport-specific performance outcomes.
The primary objective of this study is to compare the acute effects of different inspiratory muscle warm-up intensities on performance in volleyball athletes and to identify the optimal loading protocol. The findings of this study may contribute to the development of evidence-based warm-up strategies aimed at enhancing athletic performance in volleyball players.
- Conditions
- Volleyball Players
- Being tested
- Inspiratory Muscle Warm-Up
- Keywords
- respiratory system, performance, inspiratory warm up
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Inspiratory Muscle Warm-UpOther
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.
| Study group | Role | What they receive |
|---|---|---|
| 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). Receives: 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). Receives: 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). Receives: 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. Receives: Other: Inspiratory Muscle Warm-Up |
What is being measured
The primary outcome is the main question the study is designed to answer.
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.
Measured: 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.
Measured: Pre-intervention and immediately post-intervention at each session
Secondary outcomes (1)
S-indeks
Inspiratory muscle strength will be assessed using the S-Index parameter obtained from the inspiratory muscle training device. Measurements will be performed before and after each inspiratory muscle warm-up protocol to evaluate the acute effects of different intensity levels. The S-Index values will be used to compare inspiratory muscle performance across conditions.
Measured: Pre-intervention and immediately post-intervention at each session
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Apr 2026
- Study start20 Apr 2026
- Primary completion25 Apr 2026
- Study completion1 May 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Volleyball PlayersStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 24 participants (actual)
Sponsor and investigators
- Lead sponsor
- Uskudar University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, FİLİZ EYÜBOĞLU, Uskudar University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07549802
- Sponsor's protocol ID
- FIMT2025
- Status last verified
- Sep 2026
- First submitted
- 10 Apr 2026
- Last updated
- 17 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
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.
PubMed 30640308
Study at a glance
From the registry record, last updated by the sponsor on 17 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Inspiratory Muscle Warm-up Protocols on Volleyball Players
- ClinicalTrials.gov ID
- NCT07549802
- Acronym / sponsor ID
- FIMT2025
- Conditions
- Volleyball Players
- Keywords
- respiratory system, performance, inspiratory warm up
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 24 participants (actual)
- Lead sponsor
- Uskudar UniversityUniversity, hospital or other
- Study start
- 20 Apr 2026 (actual)
- Primary completion
- 25 Apr 2026 (actual)
- Study completion
- 1 May 2026 (actual)
- First posted
- 24 Apr 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Detailed description
This study aims to investigate the effects of inspiratory muscle warm-up (IMW) protocols performed at different load intensities on performance outcomes in volleyball athletes. Inspiratory muscle warm-up has been suggested to enhance respiratory muscle function, potentially improving exercise performance; however, the optimal load intensity for maximizing these effects in volleyball players remains unclear.
In this study, participants will be exposed to inspiratory muscle warm-up protocols at varying intensities to determine the most effective protocol. The protocols will be applied at different sessions with appropriate rest intervals between applications to minimize carryover effects.
Before and after each protocol application, participants will undergo a series of performance assessments. These evaluations are expected to include measures related to physical performance relevant to volleyball, such as functional capacity, respiratory parameters, and/or sport-specific performance outcomes.
The primary objective of this study is to compare the acute effects of different inspiratory muscle warm-up intensities on performance in volleyball athletes and to identify the optimal loading protocol. The findings of this study may contribute to the development of evidence-based warm-up strategies aimed at enhancing athletic performance in volleyball players.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Low-Intensity Inspiratory Muscle Warm-Up | Experimental | Other: Inspiratory Muscle Warm-UpParticipants 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). |
| Moderate-Intensity Inspiratory Muscle Warm-Up | Experimental | Other: Inspiratory Muscle Warm-UpParticipants 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). |
| High-Intensity Inspiratory Muscle Warm-Up | Experimental | Other: Inspiratory Muscle Warm-UpParticipants 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). |
| Control group | Sham comparator | Other: Inspiratory Muscle Warm-UpParticipants will perform an inspiratory breathing protocol using the inspiratory muscle training device with no external resistance applied. |
Who may qualify
- Ages
- 13 to 20 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (4 listed)
- 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
Key exclusion criteria (3 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Inspiratory Muscle Warm-UpParticipants 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. | Other | Control group, High-Intensity Inspiratory Muscle Warm-Up, Low-Intensity Inspiratory Muscle Warm-Up, Moderate-Intensity Inspiratory Muscle Warm-Up |
Primary outcome
Counter Movement Jump (CMJ) Tes
Time frame: Pre-intervention and immediately post-intervention at each session
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.
muscle oxygenation
Time frame: Pre-intervention and immediately post-intervention at each session
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.
1 secondary outcome
S-indeks
Time frame: Pre-intervention and immediately post-intervention at each session
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Sep 2026.
- Background: PubMed 30640308Barnes 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.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Inspiratory Muscle Warm-Up in people with Volleyball Players, run by Uskudar University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 17 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Counter Movement Jump (CMJ) Tes (time frame: Pre-intervention and immediately post-intervention at each session). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07549802, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Sep 2026; AzTrials last refreshed its copy on 6 Nov 2026.