Shoulder Manipulation in Volleyball Players

NCT06992375 | Recruiting DMC

• 1 other identifier: KB/95/2025
• Study Type: interventional
• Target: 12
• Locations: 1 country
• Sites: 1

Brief Summary

Currently, it is difficult to find studies in the literature assessing the influence of manual therapy on kinetic and kinematic factors for the upper limbs of volleyball players, which in the long run may translate into a reduction in injuries by improving strength and balance in athletes, when planning training or therapy.

Conditions

Manual Therapy; Manipulation; Muscle Strength; Muscles; Musculoskeletal System

Outcome Measures

Primary Outcomes (3)

• Assessment of MVC.

  Muscle EMG is an assessment of electrical characteristics during the test, the electrical source of which is the muscle membrane potential, and measured in μV.

  The study will be conducted 3 times: pre-intervention, immediately after the intervention and immediately after training session. Each isometric muscle test lasts 3 seconds.

• Assessment of MVC.

  Muscle EMG is an assessment of electrical characteristics during the test, which is measured by the repetition frequency of muscle motor unit discharges, which is measured in Hz, at the same time of the test.Time

  The study will be conducted 3 times: pre-intervention, immediately after the intervention and immediately after training session.Each isometric muscle test lasts 3 seconds.

• Muscle stiffness

  Muscle stiffness - characteristic resistance to physical contraction, which deforms initially forming. Stiffness (N/m) was calculated as S = amax.mprobe/Δl.

  The study will be conducted 3 times: pre-intervention, immediately after the intervention and immediately after training session. Each Myoton application lasts 1 sec for one point.

Secondary Outcomes (4)

• Assessment of proprioception.

  The test will be performed 3 times: pre-intervention, immediately after the intervention and immediately after training session. Each joint measurement will be performed at three settings: 30, 45 and 90 degrees.

• Y balance test

  The test will be conducted 3 times: pre-intervention, immediately after the intervention and immediately after training session.

• Med Ball Throw

  The test will be conducted 3 times: pre-intervention, immediately after the intervention and immediately after training session.

• Close Kinetic Chain Upper Extremity Stability Test

  The test will be administered 3 times: pre-intervention, immediately after the intervention and immediately after training session.

Study Arms (3)

Group A

EXPERIMENTAL

Will be used: manipulation, placebo and exercise

Other: Manual therapy; Other: Placebo; Other: Exercise

Group B

PLACEBO COMPARATOR

Will be used: manipulation, placebo and exercise

Other: Manual therapy; Other: Placebo; Other: Exercise

Group C

ACTIVE COMPARATOR

Will be used: manipulation, placebo and exercise

Other: Manual therapy; Other: Placebo; Other: Exercise

Interventions

Manual therapy OTHER

This technique involves a low-amplitude, high-velocity push on the shoulder joints with an additional two-second tension

Group A; Group B; Group C

Placebo OTHER

This technique involves a low-amplitude, high-velocity push on the shoulder joints with an additional two-second tension

Group A; Group B; Group C

Exercise OTHER

The following exercise will be performed:push-ups

Group A; Group B; Group C

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• healthy individuals who are over 18 years old,
• a player from the AZS volleyball league,
• a player who regularly competes in the league,
• expressing informed consent to participate in the study and undertaking to comply with the track regulations and wear a helmet.

You may not qualify if:

• lack of volunteer consent,
• previous surgeries of the upper, lower limb and spine,
• other upper limb injuries in the last 6 months,
• pain limiting participation in the study,

Sponsors & Collaborators

• Medical University of Gdansk: lead

Study Sites (1)

AZS Central Academic Sports Center in Gdańsk

Gdansk, 80-210, Poland

RECRUITING

MeSH Terms

Interventions

Musculoskeletal Manipulations; Exercise

Intervention Hierarchy (Ancestors)

Complementary Therapies; Therapeutics; Physical Therapy Modalities; Rehabilitation; Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Central Study Contacts

Rafał Studnicki, PhD

CONTACT

583491509; rafal.studnicki@gumed.edu.pl

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 17, 2025
• First Posted: May 28, 2025
• Study Start: May 19, 2025
• Primary Completion: September 30, 2025
• Study Completion: September 30, 2025
• Last Updated: May 28, 2025

Record last verified: 2025-04

Data Sharing

• IPD Sharing: Will not share

Locations

PL (1)