Effects of Oculomotor Exercises on Volleyball Players

NCT04852549 | Completed

• 1 other identifier: Elif Aleyna Yazgan
• Study Type: interventional
• Target: 52
• Locations: 1 country
• Sites: 1

Brief 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. 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.

Conditions

Athlete

Keywords

Volleyball; Balance; Performance; visual acuity

Outcome Measures

Primary Outcomes (4)

• 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.

  The evaluation will be made after 4 weeks of training.

• Reaction time

  Reaction time Nelson hand reaction test was used.

  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

  The evaluation will be made after 4 weeks of training.

• Vertical jump

  Vertical jump test was used.

  The evaluation will be made after 4 weeks of training.

Study Arms (2)

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.

Other: Oculomotor exercise

Interventions

Oculomotor exercise OTHER

1. 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.

Oculomotor exercise group

Eligibility Criteria

• Age: 16 Years - 26 Years
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Being in the age range of 16-26
• Playing licensed volleyball for at least 3 years without interruption
• Have normal vision and hearing

You may not qualify if:

• 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

Sponsors & Collaborators

• Istanbul Medipol University Hospital: lead

Study Sites (1)

Elif Aleyna Yazgan

Istanbul, 3434, Turkey (Türkiye)

Location

Study Officials

• Pınar Kaya Ciddi

  İstanbul Medipol University

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal investigator

Model Details: The group of the cases meeting the criteria was determined by the numbers determined by the randomizer program in the "Research Randomiser" web site.

Study Record Dates

• First Submitted: April 8, 2021
• First Posted: April 21, 2021
• Study Start: November 20, 2020
• Primary Completion: March 5, 2021
• Study Completion: April 6, 2021
• Last Updated: April 21, 2021

Record last verified: 2021-04

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)