Investigation of the Effects of Exercises Performed With Stroboscopic Glasses on Athletic Performance in Volleyball Players

December 23, 2025 updated by: Baskent University
The aim of this study was to examine the effects of exercises performed with stroboscopic glasses on athletic performance in volleyball players. 40 professional male volleyball players aged between 18-35, who had not undergone any surgery in the last 6 months and who had no chronic systemic disease were included in the study. 20 individuals were randomly assigned to the stroboscopic glasses group and 20 individuals to the control group. Individuals in the stroboscopic glasses group were informed about stroboscopic glasses. Individuals in the stroboscopic glasses group wore glasses and individuals in the control group did their exercises without glasses for 6 weeks. Individuals' visual reaction time, auditory reaction time and target-oriented reaction time were measured with the Human Benchmark test, agility assessment with the T Agility test, anaerobic capacity assessment with the vertical jump test, balance assessment with the Flamingo Balance test and coordination assessment with the Hexagonal Coordination test. The evaluations were made three times, before exercise, 6 weeks after exercise and 10 weeks after exercise.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Individuals' visual reaction time, auditory reaction time and target-oriented reaction time were measured with the Human Benchmark test, agility assessment with the T Agility test, anaerobic capacity assessment with the vertical jump test, balance assessment with the Flamingo Balance test and coordination assessment with the Hexagonal Coordination test. The evaluations were made three times, before exercise, 6 weeks after exercise and 10 weeks after exercise.

Study Type

Interventional

Enrollment (Actual)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey (Türkiye)
      • Ankara, Turkey (Türkiye)
        • Baskent University
      • Ankara, Turkey (Türkiye), 06790
        • Baskent University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria: • Male individuals aged 18-35

  • Being a professional volleyball player
  • Not having undergone surgery in the last 6 months
  • Not having any chronic, systemic, or neuromuscular disease
  • Not having visual, cognitive, or vestibular disorders

Exclusion Criteria: • Individuals under 18 and over 35 years of age

  • Female individuals
  • Sedentary individuals
  • Having visual, cognitive, or vestibular disorders

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: stroboscopic glasses group
20 volleyball players using stroboscopic glasses in training
Device: stroboscopic visual training
40 volleyball players were evaluated at three times: pre-exercise, after 6 weeks and after 10 weeks regard to reaction time, agility, anaerobic performance, balance and coordination. Experimental group used stroboscopic glasses when doing exercise. Exercise program consisted lunge, jumping and balance exercises. Each exercise consisted 12 repetitions and 3 sets. Stroboscopic glasses were adjusted to 100 ms on/150 ms off flash level 3. This frequency is always preferred scientific research about stroboscopic visual training.
No Intervention: Control group
20 volleyball players only exercised

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Reaction Time
Time Frame: 10 weeks
Human Bencmark Test
10 weeks
Agility
Time Frame: 10 weeks
T Agility Test
10 weeks
Anaerobic performance
Time Frame: 10 weeks
Vertical Jump Test
10 weeks
Balance
Time Frame: 10 weeks
Flamingo Balance Test
10 weeks
Coordination
Time Frame: 10 weeks
Hexagonal Coordination Test
10 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Baskent University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 1, 2024

Primary Completion (Actual)

February 1, 2025

Study Completion (Actual)

February 1, 2025

Study Registration Dates

First Submitted

November 19, 2025

First Submitted That Met QC Criteria

December 23, 2025

First Posted (Actual)

January 7, 2026

Study Record Updates

Last Update Posted (Actual)

January 7, 2026

Last Update Submitted That Met QC Criteria

December 23, 2025

Last Verified

December 1, 2025

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • KA24/389

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Due to privacy policy, volleyball team manager did not want to be shared individual performance data.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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