MedTrace Logo

Diaphragmatic Facilitation and Upper Extremity Performance in Volleyball Players

NCT07784517 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2026-08-27

No results posted yet for this study

Summary

The diaphragm contributes to both respiration and trunk stabilization. Effective diaphragmatic function may support postural control, force transfer, and upper extremity performance during dynamic activities. However, evidence regarding the immediate effects of manual diaphragmatic facilitation on upper extremity performance in athletes remains limited.

This study aims to investigate the immediate effects of manual diaphragmatic facilitation on upper extremity performance and respiratory function in actively participating volleyball players. Participants will receive an approximately 15-minute session of manual diaphragmatic facilitation. Pulmonary function, respiratory muscle strength, and upper extremity strength, stability, and endurance will be assessed immediately before and after the intervention. Assessments will include spirometry, maximal inspiratory and expiratory pressures, the Medicine Ball Throw Test, the Closed Kinetic Chain Upper Extremity Stability Test, and the Scapular Endurance Test.

Conditions

  • Volleyball Players

Interventions

OTHER

Diaphragmatic Facilitation

Following a standardized dynamic warm-up, participants in the intervention group will receive a single session of manual resisted diaphragmatic facilitation.

OTHER

Sham Facilitation

Participants in the control group will complete the same dynamic warm-up protocol, followed by a sham intervention consisting of superficial, non-facilitatory palpation and general breathing instructions.

Sponsors & Collaborators

  • Istinye University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
30 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-08-30
Primary Completion
2026-11-15
Completion
2026-11-30

Countries

  • Turkey (Türkiye)

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07784517 on ClinicalTrials.gov