Effect of a single session of inspiratory muscle training on performance in elite volleyball players

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, controlled study assigns 30 elite male volleyball players to either a functional inspiratory muscle training intervention or no training. The intervention uses 60 resisted breaths at 50% of maximal inspiratory pressure with a POWERbreathe device during a sport-specific drill. Assessments of muscle oxygenation, exercise capacity, dynamic balance, and agility are performed before and immediately after the session using near-infrared spectroscopy and standard performance tests. Outcome assessors are blinded to group allocation, while participants and trainers cannot be masked due to the nature of the intervention. The trial is conducted at Gazi University’s Cardiopulmonary Rehabilitation Unit with a 1:1 randomization and computer-generated allocation.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Male, aged 18 to 25 years
* Regular participation in volleyball training
* University student actively playing on an elite-level volleyball team
* Regular training during the previous 3 months
* Willing and able to provide written informed consent

Exclusion Criteria:

* Current smoking or regular alcohol use
* Regular use of medication or vitamin supplements
* History of upper respiratory tract infection or COVID-19 within the previous 3 months
* Lower-extremity or shoulder surgery within the previous 6 months
* An acute respiratory or musculoskeletal condition that prevents safe completion of the protocol
* Inability to complete the assessment or training procedures

Where it's running

• Gazi University Faculty of Health Sciences Department of Cardiopulmonary Physiotherapy and Rehabilitation, Ankara, Çankaya 06490
  Ankara, Ankara, Turkey (Türkiye) Recruiting

Study contacts

• Principal investigator: Mücahit Şahin, Pt — Gazi University
• Study coordinator: Meral BOŞNAK GÜÇLÜ, Prof. Dr
• Email: meralbosnak@gazi.edu.tr
• Phone: 03122162647

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.