Generalized Joint HypermobilityNCT06691737
Effect of Whole-body Vibration on Postural Stability, Muscle Flexibility and Lower Limb Power in Young Basketball Players With Generalized Joint Hypermobility
A study testing Whole Body Vibration in people with Generalized Joint Hypermobility, run by Gdansk University of Physical Education and Sport at 1 site in Poland.
Trial summary
The goal of this clinical trial is to assess the effect of whole body vibration (WBV) on postural stability, flexibility of the lumbar-pelvic-hip complex and lower leg muscles, and jumping ability in basketball players aged 9-15 years. Read more about this study
- Who is it for?
- Ages 9 to 15 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Generalized Joint Hypermobility
- What is being tested?
- Whole Body Vibration
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 sitePoland
- Study dates
- 20 Jan 2025to 4 Jun 2025
- 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 9 to 15 years
- Men only
- Healthy volunteers accepted
- Child
Who may be able to join
- Men aged 9-15
- Playing basketball in a sports club at least 2 training sessions a week
Who cannot join
- Thrombosis (acute narrowing of blood vessels),
- Inflammation of the musculoskeletal system,
- Arthropathy,
- Hernias,
- Discopathies,
- Tendonitis,
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- Fresh fractures,
- Scars,
- Surgeries,
- Kidney stones,
- Rheumatoid arthritis,
- Implants in the body,
- Epilepsy,
- Current injuries to the musculoskeletal system,
- Occurrence of chronic pain complaints of the musculoskeletal system.
Trial locations and contacts
1 site in 1 country.
About this study
The goal of this clinical trial is to assess the effect of whole body vibration (WBV) on postural stability, flexibility of the lumbar-pelvic-hip complex and lower leg muscles, and jumping ability in basketball players aged 9-15 years. The main questions it aims to answer are:
Does WBV affect the level of postural stability in basketball players aged 9-15 years? Does WBV affect the level of postural stability in basketball players aged 9-15 years? Does WBV affect the flexibility of the iliopsoas, rectus femoris, posterior group of hamstrings, soleus and gastrocnemius in basketball players aged 9-15 years? Does WBV affect the jump height, relative peak power, contraction time in basketball players aged 9-15 years?
Participants will take part in 6 vibration sessions at 20Hz over 6 weeks. Vibration will be performed on the Galileo Med35 platform (3x3 min).
- Conditions
- Generalized Joint Hypermobility
- Being tested
- Whole Body Vibration
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Whole Body VibrationOther
Whole body vibration consists of 3-minute vibrations with a 30-second break. Participants were asked to step onto the platform barefoot and position their feet "3" from the center of the platform, with feet pointing forward, knees slightly bent, and upper limbs along the body. The training was divided into two parts: week 1 with a frequency of 20 Hz, and a constant amplitude of 3 mm.
| Study group | Role | What they receive |
|---|---|---|
| Generalized Joint Hypermobility | Experimental | Not described Receives: Other: Whole Body Vibration |
| Not Generalized Joint Hypermobility | Experimental | Not described Receives: Other: Whole Body Vibration |
What is being measured
The primary outcome is the main question the study is designed to answer.
Changes in Postural Stability
Postural stability was measured as the overall stability index (OSI) on the Biodex Balance System on the stable and unstable platform with open and closed eyes.
Measured: 6 weeks before the intervention, the day before the intervention began, the day after the intervention, and 6 weeks after the intervention.
Range of motion (ROM) of the ankle, knee, and hip joints.
Range of motion (ROM) of the ankle, knee, and hip joints, will be measured in a resting position using an inclinometer for the iliopsoas, rectus femoris, posterior hamstring, soleus, and gastrocnemius muscles separately.
Measured: 6 weeks before the intervention, the day before the intervention began, the day after the intervention, and 6 weeks after the intervention.
Countermovement Jump Performance
Countermovement jump performance will be measured by using force plates, It will be assessed Jump height (JH), relative peak power (RPP), and contraction time (CT).
Measured: 6 weeks before the intervention, the day before the intervention began, the day after the intervention, and 6 weeks after the intervention.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Nov 2024
- Study start20 Jan 2025
- Primary completion4 Jun 2025
- Study completion4 Jun 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Generalized Joint HypermobilityStudies 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
- Prevention
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Lead sponsor
- Gdansk University of Physical Education and Sport
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06691737
- Sponsor's protocol ID
- AWFiS/2024_4_OF
- Status last verified
- Sep 2026
- First submitted
- 8 Nov 2024
- Last updated
- 11 Sep 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 11 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Whole-body Vibration on Postural Stability, Muscle Flexibility and Lower Limb Power in Young Basketball Players With Generalized Joint Hypermobility
- ClinicalTrials.gov ID
- NCT06691737
- Acronym / sponsor ID
- AWFiS/2024_4_OF
- Conditions
- Generalized Joint Hypermobility
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Gdansk University of Physical Education and SportUniversity, hospital or other
- Study start
- 20 Jan 2025 (actual)
- Primary completion
- 4 Jun 2025 (actual)
- Study completion
- 4 Jun 2025 (actual)
- First posted
- 15 Nov 2024 (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 goal of this clinical trial is to assess the effect of whole body vibration (WBV) on postural stability, flexibility of the lumbar-pelvic-hip complex and lower leg muscles, and jumping ability in basketball players aged 9-15 years. The main questions it aims to answer are:
Does WBV affect the level of postural stability in basketball players aged 9-15 years? Does WBV affect the level of postural stability in basketball players aged 9-15 years? Does WBV affect the flexibility of the iliopsoas, rectus femoris, posterior group of hamstrings, soleus and gastrocnemius in basketball players aged 9-15 years? Does WBV affect the jump height, relative peak power, contraction time in basketball players aged 9-15 years?
Participants will take part in 6 vibration sessions at 20Hz over 6 weeks. Vibration will be performed on the Galileo Med35 platform (3x3 min).
Study design
- Primary purpose
- Prevention
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Generalized Joint Hypermobility | Experimental | Other: Whole Body Vibration |
| Not Generalized Joint Hypermobility | Experimental | Other: Whole Body Vibration |
Who may qualify
- Ages
- 9 to 15 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (2 listed)
- Men aged 9-15
- Playing basketball in a sports club at least 2 training sessions a week
Key exclusion criteria (15 listed)
- Thrombosis (acute narrowing of blood vessels),
- Inflammation of the musculoskeletal system,
- Arthropathy,
- Hernias,
- Discopathies,
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 |
|---|---|---|
| Whole Body VibrationWhole body vibration consists of 3-minute vibrations with a 30-second break. Participants were asked to step onto the platform barefoot and position their feet "3" from the center of the platform, with feet pointing forward, knees slightly bent, and upper limbs along the body. The training was divided into two parts: week 1 with a frequency of 20 Hz, and a constant amplitude of 3 mm. | Other | Generalized Joint Hypermobility, Not Generalized Joint Hypermobility |
Primary outcome
Changes in Postural Stability
Time frame: 6 weeks before the intervention, the day before the intervention began, the day after the intervention, and 6 weeks after the intervention.
Postural stability was measured as the overall stability index (OSI) on the Biodex Balance System on the stable and unstable platform with open and closed eyes.
Range of motion (ROM) of the ankle, knee, and hip joints.
Time frame: 6 weeks before the intervention, the day before the intervention began, the day after the intervention, and 6 weeks after the intervention.
Range of motion (ROM) of the ankle, knee, and hip joints, will be measured in a resting position using an inclinometer for the iliopsoas, rectus femoris, posterior hamstring, soleus, and gastrocnemius muscles separately.
Countermovement Jump Performance
Time frame: 6 weeks before the intervention, the day before the intervention began, the day after the intervention, and 6 weeks after the intervention.
Countermovement jump performance will be measured by using force plates, It will be assessed Jump height (JH), relative peak power (RPP), and contraction time (CT).
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 11 Sep 2026.
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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 Whole Body Vibration in people with Generalized Joint Hypermobility, run by Gdansk University of Physical Education and Sport at 1 site in Poland.
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 2 inclusion and 15 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 11 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 Poland. 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. 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?
Changes in Postural Stability (time frame: 6 weeks before the intervention, the day before the intervention began, the day after the intervention, and 6 weeks after the intervention.). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 11 Sep 2026.