Can Free-Style judo practice sharpen an Athlete's eye and reaction speed?
NCT ID NCT07798622
First seen Sep 01, 2026 · Last updated Sep 02, 2026 · Updated 1 time
Summary
This trial tests whether two common judo practice styles, randori and yakusoku geiko, change visual-motor performance and heart rate differently in young male judokas. Randori involves free practice with active resistance, while yakusoku geiko is more controlled with less resistance. Each participant will do both styles and a rest session on separate days. Researchers will measure visual-motor performance with the King-Devick Test and heart rate before and after each session.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Two judo practice methods: randori (free practice with resistance) and yakusoku geiko (controlled practice with less resistance)
- What this could lead to
- If it works, this could help coaches choose practice styles that best sharpen athletes' visual attention and reaction speed.
- What could go wrong
- The trial is small and measures only immediate effects, so any differences may not last or apply beyond young male judokas.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 18 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Oct 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 30 years
- Sex
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Male participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Male participants. Licensed judo athletes residing in Istanbul. Regular participation in judo training at least three days per week. Willingness to provide informed consent. Willingness to avoid high-intensity exercise during the 24 hours before each testing session. Exclusion Criteria: Any known history of disease. Regular medication use. Failure to meet the study inclusion criteria.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
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Contacts and locations
Locations
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Boğaziçi University
Istanbul, Türkiye, 34342, Turkey (Türkiye)
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