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CompletedNCT07323108Updated Jan 7, 2026

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

An interventional study of stroboscopic visual training in Stroboscopic Glasses, sponsored by Baskent University. Completed at 2 sites in Turkey (Türkiye). Open to male participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-01-07.

Sponsored by Baskent University · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 1 year 1 month after the study started (first participant enrolled Oct 2024, registered Nov 2025).
Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
18 Years to 35 Years
Sex
Male
01

Study summary

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.

Read the 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.

02

Conditions studied

  • Stroboscopic Glasses

Keywords

  • volleyball
  • stroboscopic glasses
  • physical fitness
  • sports performance
03

In context

Lead sponsor

Baskent University is the lead sponsor of 201 studies on the registry; 36 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 35 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Eligibility criteria

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
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
40 participants (actual)

Study arms

  • Experimental
    stroboscopic glasses group

    20 volleyball players using stroboscopic glasses in training

    Device: stroboscopic visual training

  • No intervention
    Control group

    20 volleyball players only exercised

Interventions

  • Devicestroboscopic 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.

06

What researchers measure

Primary outcomes

  1. Reaction Time

    Human Bencmark Test

    Time frame: 10 weeks

  2. Agility

    T Agility Test

    Time frame: 10 weeks

  3. Anaerobic performance

    Vertical Jump Test

    Time frame: 10 weeks

  4. Balance

    Flamingo Balance Test

    Time frame: 10 weeks

  5. Coordination

    Hexagonal Coordination Test

    Time frame: 10 weeks

07

Study locations

2 sites
  • Baskent University
    Ankara, 06790, Turkey (Türkiye)
  • Baskent University
    Ankara, Turkey (Türkiye)
08

References and documents

Publications

  • Avedesian JM, Covassin T, Baez S, Nash J, Nagelhout E, Dufek JS. Relationship Between Cognitive Performance and Lower Extremity Biomechanics: Implications for Sports-Related Concussion. Orthop J Sports Med. 2021 Aug 24;9(8):23259671211032246. doi: 10.1177/23259671211032246. eCollection 2021 Aug. PubMed 34458386 ↗
  • Hulsdunker T, Mierau A. Visual Perception and Visuomotor Reaction Speed Are Independent of the Individual Alpha Frequency. Front Neurosci. 2021 Apr 8;15:620266. doi: 10.3389/fnins.2021.620266. eCollection 2021. PubMed 33897344 ↗
  • Zwierko T, Tapia V, Vera J, Redondo B, Morenas-Aguilar MD, Garcia-Ramos A. Enhancing reactive agility in soccer: The impact of stroboscopic eyewear during warm-up across fatigued and non-fatigued conditions. Eur J Sport Sci. 2024 Dec;24(12):1798-1808. doi: 10.1002/ejsc.12224. Epub 2024 Nov 22. PubMed 39578413 ↗
  • Costa E, Gongora M, Bittencourt J, Marinho V, Cagy M, Teixeira S, Nicoliche E, Fernandes I, Machado C, Wienecke J, Ribeiro P, Gupta DS, Velasques B, Budde H. Decrease in reaction time for volleyball athletes during saccadic eye movement task: A preliminary study with evoked potentials. PLoS One. 2024 Jul 3;19(7):e0290142. doi: 10.1371/journal.pone.0290142. eCollection 2024. PubMed 38959207 ↗

Individual participant data

Plan to share: No — Due to privacy policy, volleyball team manager did not want to be shared individual performance data.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 7, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07323108
Lead sponsor
Baskent University
Responsible party
Sponsor
First posted
Jan 7, 2026
Start date
Oct 1, 2024
Primary completion
Feb 1, 2025
Completion
Feb 1, 2025
Last update
Jan 7, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.

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