EFFECTS OF TRAINING WITH STROBOSCOPIC GLASSES ON ATHLETIC PERFORMANCE IN VOLLEYBALL PLAYERS

December 19, 2025 updated by: Baskent University
This study was conducted to investigate the effects of training with stroboscopic glasses on athletic performance in volleyball players. 54 male volleyball players participated in the study. Individuals were randomly divided into two groups as experimental group (n=27) and control group (n=27). Passing, reception and blocking exercises were performed paired with stroboscopic glasses in the experimental group and without glasses in the control group for 6 weeks. Measurements were made twice, before the exercise program and at the end of the 6-week exercise program. Reaction time was evaluated with the Human Benchmark test, agility with T agility test, anaerobic power with vertical jump, balance with Flamingo balance test, coordination with Hexagonal coordination test.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

In the study, individuals were evaluated face to face at the Turkish Volleyball Federation Beştepe Volleyball Hall. The evaluations lasted 30 minutes for each individual. After the sociodemographic information of the individuals in our study was recorded, individuals were divided into two groups as the experimental group and the control group using a computer numbering system. Necessary information and explanations were provided to individuals in the experimental group with Senaptec brand stroboscopic glasses (Beaverton, Oregon USA) before the application. Passing, reception and blocking training was performed with glasses in the stroboscopic glasses group. Training was performed without stroboscopic glasses in the control group. It was performed after the players' warm-up exercises for 3 sessions per week for 6 weeks. Since there was one stroboscopic glass, the evaluations were planned for 2 days, lasting 30 minutes for each individual. Reaction time, agility and anaerobic power were performed on the first day, and coordination and balance were performed on the second day. The evaluations were performed after the warm-up exercises. The evaluations were performed twice, before the training program and at the end of 6 weeks.

Study Type

Interventional

Enrollment (Actual)

54

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

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 between the ages of 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 any visual, cognitive or vestibular disorders

Exclusion Criteria:

  • Individuals under the age of 18 and over the age of 35
  • Female individuals
  • Sedentary individuals
  • Having visual, cognitive or vestibular disorders
  • Having any chronic, systemic neuromuscular diseases

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: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: stroboscopic glasses group
27 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 are always preferred scientific research about stroboscopic visual training.
Device: stroboscopic visual training
27 volleyball players were evaluated two times: pre-exercise and after 6 weeks. Reaction time, agility, anaerobic performance, balance and coordination were measured regard to athletic performance. Athletes using stroboscopic glasses perform exercise program. Exercise program consisted of lunge, balance and jumping exercises. Each exercise consisted of 12 repetitions and 3 sets. Stroboscopic glasses were adjusted to 100 ms on/150 ms off flash level 3. This frequency is always preferred in scientific research.
No Intervention: Control group
27 volleyball players only exercised

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Reaction time
Time Frame: 6 weeks
Human Benchmark Test
6 weeks
Agility
Time Frame: 6 weeks
T Agility Test
6 weeks
Anaerobic Performance
Time Frame: 6 weeks
Vertical Jumping
6 weeks
Balance
Time Frame: 6 weeks
Flamingo Balance Test
6 weeks
Coordination
Time Frame: 6 weeks
Hexagonal Coordination Test
6 weeks

Collaborators and Investigators

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

Sponsor

Baskent University

Investigators

  • Study Director: Nihan Özünlü PEKYAVAŞ, PROFESSOR, 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)

March 12, 2025

Primary Completion (Actual)

May 11, 2025

Study Completion (Actual)

May 24, 2025

Study Registration Dates

First Submitted

November 19, 2025

First Submitted That Met QC Criteria

December 19, 2025

First Posted (Actual)

December 29, 2025

Study Record Updates

Last Update Posted (Actual)

December 29, 2025

Last Update Submitted That Met QC Criteria

December 19, 2025

Last Verified

December 1, 2025

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • KA25/182

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Research evaluated individual athletic performance. Volleyball team manager did not want to share 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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