AthleteNCT04852549
Effects of Oculomotor Exercises on Volleyball Players
A study testing Oculomotor exercise in people with Athlete, run by Istanbul Medipol University Hospital at 1 site in Turkey (Türkiye).
Trial summary
The researcher aimed to investigate the effects of oculo-motor exercises on dynamic visual acuity, balance and performance of volleyball players whose performance can be improved with visual skills training. Read more about this study
- Who is it for?
- Ages 16 to 26 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Athlete
- What is being tested?
- Oculomotor exercise
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 52 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 20 Nov 2020to 6 Apr 2021
- 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 16 to 26 years
- Women only
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Being in the age range of 16-26
- Playing licensed volleyball for at least 3 years without interruption
- Have normal vision and hearing
Who cannot join
- Having a direct blow to the lower or upper extremity in the past month
- People with musculoskeletal disorders may experience balance (forward head posture).
- Refractive defects
- History of ankle fracture
- Double-sided ankle sprain
- Vision problems
- History of lower extremity surgery in the last 6 months
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effects of Oculomotor Exercises on Balance, Dynamic Visual Acuity and Performance in Volleyball Players
The researcher aimed to investigate the effects of oculo-motor exercises on dynamic visual acuity, balance and performance of volleyball players whose performance can be improved with visual skills training.
H0: Oculo-motor exercises applied to volleyball players are effective on dynamic visual acuity, balance and performance.
H1: Oculo-motor exercises have no effect on dynamic visual acuity, balance and performance in volleyball players.
Read the detailed description
This study on the Effect of Oculo-Motor Exercises on Dynamic Visual Acuity, Balance and Performance in Volleyball Players was ethically approved by the "Istanbul Medipol University Non-Invasive Ethics Committee" with file number 10840098-604.01.01-E.14171 on 16.04.2020. The study included 52 female volleyball players aged 16-26 who played participants for at least 3 years without interruption. Power analysis was performed using the 3.1.9.5 version of the G-Power program to determine the number of individuals to be included in the study. Type-1 was accepted as 0.05 and power ratio as 80%. Effect size 0.8 was taken. According to the results of the power analysis, the number of participants required to be included in the study was determined as 52.
Participants; Age, height, weight, gender, body mass index, dominant side, position played in volleyball, number of weekly training, daily training time, previous sports injuries, education status, smoking and alcohol use, accompanying illnesses were questioned. FBT and YBT were used for balance evaluations, and Nelson's Hand Reaction Test was used for reaction times. In addition, Dynamic Visual Acuity and Vertical Jumping distances were evaluated twice before and after treatment.
Participants included in the study, the control group continued their routine ball training after the evaluations, while the intervention group continued with the oculo-motor training for 4 weeks, 6 days a week, in the morning and evening, for 10 minutes, 2 times a day, in addition to normal ball training. they did the exercises. While doing the exercises, individuals were taught to focus on the purpose they held in their hands, move their head, and aim fast enough to see the image clearly. Two repetitions each week were added to the exercise numbers. Ten seconds rest between two sets and five seconds rest between movements.
- Conditions
- Athlete
- Being tested
- Oculomotor exercise
- Keywords
- Volleyball, Balance, Performance, visual acuity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Oculomotor exerciseOther
- While holding the head in the middle position, holding two colored objects in both hands, looking at the object in the right hand without turning the head, counting up to 10 and looking at the object in the left hand and counting up to 10,
- While holding a fixed head in the middle position and holding a colored object in the right hand, following the object with the eyes while moving the right hand from right to left without turning the head and returning,
- With the head fixed in the middle position, with the right hand on the left, eyes are fixed on the hand-held colored object and turn the head to the right and left.
- The head will be fixed in the middle position, the eyes will be fixed on the colored object held in the right or left hand and the arm and the head will be turned to opposite directions.
| Study group | Role | What they receive |
|---|---|---|
| No intervention group | No intervention | The control group continued with routine training after evaluations. |
| Oculomotor exercise group | Experimental | After the evaluation, the intervention group performed oculo-motor exercises for 4 weeks, 6 days a week, morning and evening, twice a day for 10 minutes, in addition to normal ball training. While doing the exercises, individuals were taught to focus on the purpose they held in their hands, move their head, and aim fast enough to see the image clearly. Two repetitions each week were added to the exercise numbers. Ten seconds rest between two sets and five seconds rest between movements. Receives: Other: Oculomotor exercise |
What is being measured
The primary outcome is the main question the study is designed to answer.
Balance
Static balance of the individuals was evaluated by Flamingo Balance Test (FDT). A wooden stick of 50 cm length, 5 cm height and 3 cm width was used in the test. Dynamic balance changes of individuals were evaluated with YDT. In the measurement of dynamic balance with Y Balance Test (YDT), the amount of reaching out on the dominant sides of all individuals was measured.
Measured: The evaluation will be made after 4 weeks of training.
Reaction time
Reaction time Nelson hand reaction test was used.
Measured: The evaluation will be made after 4 weeks of training.
Dynamic visual acuity
In fact, dynamic vision is defined as the ability to detect details when there is a relative movement between the observer and the target object. It was measured by reading the numbers during neck rotation. A PowerPoint containing 10 slides, each of which randomly had 5 numbers, was used to measure dynamic vision (the size of all numbers was 12 to 20 at the center of the page). Each page had 5 numbers with the same font and each person evaluated 10 pages
Measured: The evaluation will be made after 4 weeks of training.
Vertical jump
Vertical jump test was used.
Measured: The evaluation will be made after 4 weeks of training.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Apr 2021
- Study start20 Nov 2020
- Primary completion5 Mar 2021
- Study completion6 Apr 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for AthleteStudies 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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- The group of the cases meeting the criteria was determined by the numbers determined by the randomizer program in the "Research Randomiser" web site.
- Masking
- None (open label)
- Enrolment
- 52 participants (actual)
Sponsor and investigators
- Lead sponsor
- Istanbul Medipol University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, elif yazgan, Istanbul Medipol University Hospital
- Investigators
- Pınar Kaya Ciddi, Study director, İstanbul Medipol University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04852549
- Sponsor's protocol ID
- Elif Aleyna Yazgan
- Status last verified
- Apr 2021
- First submitted
- 8 Apr 2021
- Last updated
- 21 Apr 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 Apr 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Oculomotor Exercises on Balance, Dynamic Visual Acuity and Performance in Volleyball Players
- ClinicalTrials.gov ID
- NCT04852549
- Acronym / sponsor ID
- Elif Aleyna Yazgan
- Conditions
- Athlete
- Keywords
- Volleyball, Balance, Performance, visual acuity
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 52 participants (actual)
- Lead sponsor
- Istanbul Medipol University HospitalUniversity, hospital or other
- Study start
- 20 Nov 2020 (actual)
- Primary completion
- 5 Mar 2021 (actual)
- Study completion
- 6 Apr 2021 (actual)
- First posted
- 21 Apr 2021 (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 researcher aimed to investigate the effects of oculo-motor exercises on dynamic visual acuity, balance and performance of volleyball players whose performance can be improved with visual skills training.
H0: Oculo-motor exercises applied to volleyball players are effective on dynamic visual acuity, balance and performance.
H1: Oculo-motor exercises have no effect on dynamic visual acuity, balance and performance in volleyball players.
Detailed description
This study on the Effect of Oculo-Motor Exercises on Dynamic Visual Acuity, Balance and Performance in Volleyball Players was ethically approved by the "Istanbul Medipol University Non-Invasive Ethics Committee" with file number 10840098-604.01.01-E.14171 on 16.04.2020. The study included 52 female volleyball players aged 16-26 who played participants for at least 3 years without interruption. Power analysis was performed using the 3.1.9.5 version of the G-Power program to determine the number of individuals to be included in the study. Type-1 was accepted as 0.05 and power ratio as 80%. Effect size 0.8 was taken. According to the results of the power analysis, the number of participants required to be included in the study was determined as 52.
Participants; Age, height, weight, gender, body mass index, dominant side, position played in volleyball, number of weekly training, daily training time, previous sports injuries, education status, smoking and alcohol use, accompanying illnesses were questioned. FBT and YBT were used for balance evaluations, and Nelson's Hand Reaction Test was used for reaction times. In addition, Dynamic Visual Acuity and Vertical Jumping distances were evaluated twice before and after treatment.
Participants included in the study, the control group continued their routine ball training after the evaluations, while the intervention group continued with the oculo-motor training for 4 weeks, 6 days a week, in the morning and evening, for 10 minutes, 2 times a day, in addition to normal ball training. they did the exercises. While doing the exercises, individuals were taught to focus on the purpose they held in their hands, move their head, and aim fast enough to see the image clearly. Two repetitions each week were added to the exercise numbers. Ten seconds rest between two sets and five seconds rest between movements.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- The group of the cases meeting the criteria was determined by the numbers determined by the randomizer program in the "Research Randomiser" web site.
| Arm | Type | Receives |
|---|---|---|
| No intervention group | No intervention | –The control group continued with routine training after evaluations. |
| Oculomotor exercise group | Experimental | Other: Oculomotor exerciseAfter the evaluation, the intervention group performed oculo-motor exercises for 4 weeks, 6 days a week, morning and evening, twice a day for 10 minutes, in addition to normal ball training. While doing the exercises, individuals were taught to focus on the purpose they held in their hands, move their head, and aim fast enough to see the image clearly. Two repetitions each week were added to the exercise numbers. Ten seconds rest between two sets and five seconds rest between movements. |
Who may qualify
- Ages
- 16 to 26 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (3 listed)
- Being in the age range of 16-26
- Playing licensed volleyball for at least 3 years without interruption
- Have normal vision and hearing
Key exclusion criteria (7 listed)
- Having a direct blow to the lower or upper extremity in the past month
- People with musculoskeletal disorders may experience balance (forward head posture).
- Refractive defects
- History of ankle fracture
- Double-sided ankle sprain
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 |
|---|---|---|
| Oculomotor exercise1. While holding the head in the middle position, holding two colored objects in both hands, looking at the object in the right hand without turning the head, counting up to 10 and looking at the object in the left hand and counting up to 10, 2. While holding a fixed head in the middle position and holding a colored object in the right hand, following the object with the eyes while moving the right hand from right to left without turning the head and returning, 3. With the head fixed in the middle position, with the right hand on the left, eyes are fixed on the hand-held colored object and turn the head to the right and left. 4. The head will be fixed in the middle position, the eyes will be fixed on the colored object held in the right or left hand and the arm and the head will be turned to opposite directions. | Other | Oculomotor exercise group |
Primary outcome
Balance
Time frame: The evaluation will be made after 4 weeks of training.
Static balance of the individuals was evaluated by Flamingo Balance Test (FDT). A wooden stick of 50 cm length, 5 cm height and 3 cm width was used in the test. Dynamic balance changes of individuals were evaluated with YDT. In the measurement of dynamic balance with Y Balance Test (YDT), the amount of reaching out on the dominant sides of all individuals was measured.
Reaction time
Time frame: The evaluation will be made after 4 weeks of training.
Reaction time Nelson hand reaction test was used.
Dynamic visual acuity
Time frame: The evaluation will be made after 4 weeks of training.
In fact, dynamic vision is defined as the ability to detect details when there is a relative movement between the observer and the target object. It was measured by reading the numbers during neck rotation. A PowerPoint containing 10 slides, each of which randomly had 5 numbers, was used to measure dynamic vision (the size of all numbers was 12 to 20 at the center of the page). Each page had 5 numbers with the same font and each person evaluated 10 pages
Vertical jump
Time frame: The evaluation will be made after 4 weeks of training.
Vertical jump test was used.
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 21 Apr 2021.
- Individual participant dataSharing planned: No
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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.
Pınar Kaya Ciddi study director
İstanbul Medipol University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Oculomotor exercise in people with Athlete, run by Istanbul Medipol University Hospital at 1 site in Turkey (Türkiye).
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 3 inclusion and 7 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 21 Apr 2021. 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 Turkey (Türkiye). 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?
Balance (time frame: The evaluation will be made after 4 weeks of training.). The study lists 4 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 21 Apr 2021; AzTrials last refreshed its copy on 7 Nov 2026.