Clinical trial NCT06992388: Application Shoulder Manipulation in Volleyball Players
Official title: The Influence of Shoulder Manipulation on Muscle Strength and Stiffness and Motor Functionality of Volleyball Players During Training
Study type: INTERVENTIONAL
Overall status: NOT_YET_RECRUITING
Phase: NA
Conditions: Manual Therapy
Manipulation
Muscles
Lead sponsor: Medical University of Gdansk
Sponsor class: OTHER
First posted: 2025-05-28
Enrollment: 12
Sex: MALE
Minimum age (years): 18
Maximum age (years): 30
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: PREVENTION

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.


Eligibility criteria: Inclusion Criteria:

* 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.

Exclusion Criteria:

* 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.

Primary outcomes:
measure: Assessment of MVC.
timeFrame: 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.
measure: Assessment of MVC.
timeFrame: 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.
measure: Muscle stiffness
timeFrame: 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:
measure: Assessment of proprioception.
timeFrame: 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.
measure: Y balance test
timeFrame: The test will be conducted 3 times: pre-intervention, immediately after the intervention and immediately after training session.
measure: Med Ball Throw
timeFrame: The test will be conducted 3 times: pre-intervention, immediately after the intervention and immediately after training session.
measure: Close Kinetic Chain Upper Extremity Stability Test
timeFrame: The test will be administered 3 times: pre-intervention, immediately after the intervention and immediately after training session.
Other outcomes:
Locations:
city: Gdansk
country: Poland
facility: AZS Central Academic Sports Center in Gdańsk
Study officials:
affiliation: Medical University of Gdansk
name: Studnicki
role: PRINCIPAL_INVESTIGATOR
References: