Skip to main content
OpenTrials
Completed

NCT Number: NCT07162545

Effects Of Stroboskobic Visual Training On Cognitive Performance in Adolescent Male Volleyball Players.

Objective: To determine the effects of a stroboscopic training program on cognitive function in adolescent male volleyball players. The study aims to reveal the impact of using stroboscopic glasses during a portion of their training on volleyball players' cognitive functions.

The data obtained from the study will be important for improving volleyball training programs and contributing to the sports science literature.

Completed

Looking for future studies?

Notify Me

Key information

Age range

13 year–18 year

Sex eligibility

Male

Study type

Observational

Primary location

Sakarya University of Applied Sciences Physiotherapy and Rehabilitation Research Center

Sakarya, Turkey (Türkiye)

About this study

Numerous studies have shown that physical activity produces structural and functional changes in the brain that support cognitive functions. Some studies suggest that different types of exercise have different effects on cognition. A growing body of literature suggests that the effects of physical exercise on cognitive function may be related to the type of exercise.

Sports are divided into two groups based on the predictability and consistency of the performance environment: open and closed skill sports. Open skill sports (e.g., volleyball, tennis, soccer, etc.) are externally paced activities performed in a dynamic, unpredictable environment, while closed skill sports (e.g., running, swimming, archery, etc.) are internally paced and performed in a static, predictable environment. A recent study showed that team athletes outperform recreational athletes in sustained attention and processing speed. Volleyball, as a team sport, may further enhance some aspects of cognitive skills.

The purpose of this study was to examine the effects of volleyball training using stroboscopic glasses on cognitive function in adolescent male volleyball players.

Effects of Stroboscopic Visual Training: Humans have a remarkable capacity for learning and adaptation. The disruption of visual information can force individuals to reduce their reliance on online visual feedback. It is believed that practicing in situations where visual input is poor will force individuals to better utilize the limited visual information available. This can train the perceptual and attentional abilities that support basic visuomotor control. Attention is a critical skill in many domains, and even a small increase can have profound effects; a small improvement in motion perception and focused attention is crucial for a competitive athlete or a soldier searching for an enemy combatant. Perceptual information influences many motor tasks and ensures the maintenance of accurate control in changing or uncertain environments. Consequently, changes in the environment will regularly produce variations in task performance.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Being an adolescent male volleyball player between the ages of 13-18.
  • Having attended volleyball training regularly for at least one year.
  • Agreeing to attend training regularly throughout the study period.
  • Having signed the voluntary participation form and parental consent form.
  • Having no visual or auditory impairments.
  • Having completed cognitive function tests during the initial evaluation.

Exclusion criteria

  • Having a history of a disease that could affect neurological, psychiatric, or cognitive functions.
  • Individuals whose use of glasses, contact lenses, or eye health prevents them from using stroboscopic glasses.
  • Having had a head, neck, or serious lower/upper extremity injury within the last 6 months.
  • Regular use of any medication (especially medications that affect attention/cognitive functions).
  • Individuals who declared they were unable to comply with the study process or who did not participate in follow-up assessments.
  • Individuals who did not comply with the research protocol during testing or whose data were incomplete.

Treatment and study plan

stroboskopic visual training

Other

Players in the study group will wear stroboscopic glasses for 10 minutes a day, two days a week, for eight weeks during their routine training. Evaluations will be repeated at the end of the eight weeks.

Primary outcomes

  1. Visual-Spatial Perception

    Time frame: Eight weeks

    Line Orientation Test

  2. Cognitive Functions

    Time frame: Eight weeks

    Trail Making Test

  3. Directing attention

    Time frame: Eight weeks

    Stroop Test

Sponsors and collaborators

Lead sponsor

Kocaeli University

Other

Registry information

Official study title

"Effects Of Stroboskobic Visual Training On Cognitive Performance in Adolescent Male Volleyball Players

Important dates

Study start
2025
Primary completion
2025
Study completion
2026
First posted
Sep 9, 2025
Registry last updated
Apr 14, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.