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

NCT07308535 | Completed DMC

• 1 other identifier: KA25/182
• Study Type: interventional
• Target: 54
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Physical Fitness; Stroboscopic Visual Training

Keywords

Volleyball; stroboscopic glasses; athletic performance; physical fitness; visual training

Outcome Measures

Primary Outcomes (5)

• Reaction time

  Human Benchmark Test

  6 weeks

• Agility

  T Agility Test

  6 weeks

• Anaerobic Performance

  Vertical Jumping

  6 weeks

• Balance

  Flamingo Balance Test

  6 weeks

• Coordination

  Hexagonal Coordination Test

  6 weeks

Study Arms (2)

stroboscopic glasses group

EXPERIMENTAL

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

Control group

NO INTERVENTION

27 volleyball players only exercised

Interventions

stroboscopic visual training DEVICE

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.

stroboscopic glasses group

Eligibility Criteria

• Age: 18 Years - 35 Years
• Gender Eligibility Details: Volleyball Players
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• 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

You may not qualify if:

• 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

Sponsors & Collaborators

• Baskent University: lead

Study Sites (1)

Baskent University

Ankara, 06790, Turkey (Türkiye)

Location

Related Publications (5)

• Ramirez-Campillo R, Andrade DC, Nikolaidis PT, Moran J, Clemente FM, Chaabene H, Comfort P. Effects of Plyometric Jump Training on Vertical Jump Height of Volleyball Players: A Systematic Review with Meta-Analysis of Randomized-Controlled Trial. J Sports Sci Med. 2020 Aug 13;19(3):489-499. eCollection 2020 Sep.

  PMID: 32874101 RESULT

• 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.

  PMID: 39578413 RESULT

• Ahmadi M, Nobari H, Ramirez-Campillo R, Perez-Gomez J, Ribeiro ALA, Martinez-Rodriguez A. Effects of Plyometric Jump Training in Sand or Rigid Surface on Jump-Related Biomechanical Variables and Physical Fitness in Female Volleyball Players. Int J Environ Res Public Health. 2021 Dec 11;18(24):13093. doi: 10.3390/ijerph182413093.

  PMID: 34948702 RESULT

• Keoliya AA, Ramteke SU, Boob MA, Somaiya KJ. Enhancing Volleyball Athlete Performance: A Comprehensive Review of Training Interventions and Their Impact on Agility, Explosive Power, and Strength. Cureus. 2024 Jan 31;16(1):e53273. doi: 10.7759/cureus.53273. eCollection 2024 Jan.

  PMID: 38435930 RESULT

• Mikolajec K, Nowak B, Banys D, Krzysztofik M, Skalski DT, Markiel A, Maszczyk A. Factors determining sports results in elite national volleyball teams between 2004 and 2016. Biol Sport. 2025 Jan;42(1):145-150. doi: 10.5114/biolsport.2025.139085. Epub 2024 Jul 31.

  PMID: 39758186 RESULT

Study Officials

• Nihan Özünlü PEKYAVAŞ, PROFESSOR

  Baskent University

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: 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

Study Record Dates

• First Submitted: November 19, 2025
• First Posted: December 29, 2025
• Study Start: March 12, 2025
• Primary Completion: May 11, 2025
• Study Completion: May 24, 2025
• Last Updated: December 29, 2025

Record last verified: 2025-12

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)