Can special vision and reaction training improve visual skills and volleyball performance in male university volleyball players?

ISRCTN	ISRCTN10147263
DOI	https://doi.org/10.1186/ISRCTN10147263
Sponsor	Hunan Normal University
Funder	Hunan Normal University

Submission date: 27/05/2026
Registration date: 27/05/2026
Last edited: 27/05/2026

Recruitment status: No longer recruiting
Overall study status: Completed
Condition category: Other

Prospectively registered

Protocol

Statistical analysis plan

Results

Individual participant data

Record updated in last year

Plain English summary of protocol

Not provided at time of registration

Contact information

Mr Xiu shen Dong
Principal investigator, Public, Scientific

School of Physical Education, Hunan Normal University
Changsha
410012
China

ORCID ID	0009-0003-0209-221X
Phone	+86 15688476065
Email	202470153119@hunnu.edu.cn

Study information

Primary study design	Interventional
Allocation	Randomized controlled trial
Masking	Blinded (masking used)
Control	Active
Assignment	Parallel
Purpose	Sport-specific performance and visual-motor training intervention
Scientific title	Effects of Combined Stroboscopic Glasses and Reaction Light Training on Visual Abilities and Sport-Specific Performance in Collegiate Male Volleyball Players
Study objectives
Ethics approval(s)	Approved 12/01/2026, Hunan Normal University Biomedical Research Ethics Committee (School of Physical Education, Hunan Normal University, Changsha, 410012, China; no telephone number provided; ethics@hunnu.edu.cn), ref: 2026264
Health condition(s) or problem(s) studied	Visual-motor ability and sport-specific performance in healthy collegiate male volleyball players undergoing combined stroboscopic glasses and reaction light training.
Intervention	Participants in the experimental group received combined visual training in addition to regular volleyball training. The intervention consisted of stroboscopic glasses training and reaction light training. The programme lasted 8 weeks, with 3 sessions per week and 30 minutes per session. Each session included approximately 15 minutes of reaction light training and 15 minutes of stroboscopic visual training. The training followed a progressive four-phase model, moving from simple stationary tasks to more complex volleyball-specific tasks involving footwork, ball recognition, trajectory judgment, and defensive reception. Participants in the control group continued regular volleyball training and completed the same or highly similar volleyball-related tasks within the same time frame, but without using stroboscopic glasses or reaction light devices. Instead, cues were provided through coach commands, hand gestures, or fixed markers. Randomisation process After baseline testing, participants were randomly allocated to either the experimental group or the control group by an independent third-party staff member who was not involved in the intervention or outcome assessment. Randomisation was performed using a computer-generated random sequence in Microsoft Excel. The experimental group received combined stroboscopic glasses and reaction light training in addition to regular volleyball training, whereas the control group continued regular volleyball training and completed the same or highly similar volleyball-related tasks without the stroboscopic glasses or reaction light devices.
Intervention type	Behavioural
Primary outcome measure(s)	Visual abilities measured using Senaptec Sensory Station system. The outcomes included reaction time (RT), eye-hand coordination (EHC), and Go/No-Go decision-making ability (GNG) at baseline and immediately after the 8-week intervention
Key secondary outcome measure(s)
Completion date	01/05/2026

Eligibility

Participant type(s)
Age group	Adult
Lower age limit	18 Years
Upper age limit	25 Years
Sex	Male
Target sample size at registration	30
Total final enrolment	30
Key inclusion criteria	1. Aged 18–25 years 2. Official members of a collegiate men’s volleyball team 3. Normal or corrected-to-normal vision 4. Able to complete all intervention and testing procedures
Key exclusion criteria	1. History of concussion, vestibular dysfunction, or sports injury within the previous 3 months 2. Any neurological, visual, or balance disorders 3. Failure to complete all intervention or testing procedures
Date of first enrolment	12/01/2026
Date of final enrolment	30/04/2026

Locations

Countries of recruitment

China

Study participating centres

Results and Publications

Individual participant data (IPD) Intention to share	No

Editorial Notes

27/05/2026: Trial's existence confirmed by Hunan Normal University Biomedical Research Ethics Committee.