Acute Effects of Randori and Yakusoku Geiko in Young Judokas
Comparison of the Acute Effects of Randori and Yakusoku Geiko on Visual-Motor Performance and Heart Rate in Young Judokas
This study will compare the immediate effects of two common judo practice methods, randori and yakusoku geiko, on visual-motor performance and heart rate in young male judokas. Randori is a free-practice form of judo that involves active resistance and unpredictable interaction with an opponent, whereas yakusoku geiko is a more controlled practice method in which techniques are performed with less resistance.
The study will use a randomized, counterbalanced crossover design. The same participants will complete three conditions on separate days: randori, yakusoku geiko, and a seated rest control condition. The order of these conditions will be randomized, and there will be at least 48 hours between sessions.
Before and immediately after each condition, visual-motor performance will be assessed using the King-Devick Test, a rapid number-naming task that measures visual scanning, attention, and eye movement-related performance. Heart rate will also be measured before and immediately after each condition using a Polar H10 chest strap.
Randori and yakusoku geiko will each be performed for 4 minutes after a standardized warm-up. During the control condition, participants will rest for 4 minutes without performing physical activity. The study will examine whether these different judo practice conditions produce different immediate changes in King-Devick Test completion time, error count, and heart rate.
研究概览
研究类型
注册 (估计的)
阶段
- 不适用
联系人和位置
学习联系方式
- 姓名：Muhammed Sıddık Çemç, Dr.
- 电话号码：+90 537 016 29 25
- 邮箱：mscemc@gmail.com
学习地点
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Türkiye
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Istanbul、Türkiye、土耳其（türkiye）、34342
- Boğaziçi University
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接触：
- Muhammed Sıddık Çemç, Dr.
- 电话号码：+90 537 016 29 25
- 邮箱：mscemc@gmail.com
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首席研究员：
- Muhammed Sıddık Çemç, Dr.
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参与标准
资格标准
适合学习的年龄
- 成人
接受健康志愿者
描述
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.
学习计划
研究是如何设计的？
设计细节
- 主要用途：基础科学
- 分配：随机化
- 介入模型：交叉作业
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Sequence 1: Randori → Yakusoku Geiko → Control
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Participants will complete a 4-minute randori session following an approximately 15-minute standardized warm-up.
Randori will involve free judo practice with active resistance and unpredictable interaction between matched training partners.
Participants will be paired with consideration of weight category and belt level.
Participants will complete a 4-minute yakusoku geiko session following an approximately 15-minute standardized warm-up.
Yakusoku geiko will involve controlled and repetitive judo technique practice with little or no active resistance from the training partner.
Participants will be paired with consideration of weight category and belt level.
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实验性的：Sequence 2: Randori → Control → Yakusoku Geiko
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Participants will complete a 4-minute randori session following an approximately 15-minute standardized warm-up.
Randori will involve free judo practice with active resistance and unpredictable interaction between matched training partners.
Participants will be paired with consideration of weight category and belt level.
Participants will complete a 4-minute yakusoku geiko session following an approximately 15-minute standardized warm-up.
Yakusoku geiko will involve controlled and repetitive judo technique practice with little or no active resistance from the training partner.
Participants will be paired with consideration of weight category and belt level.
|
|
实验性的：Sequence 3: Yakusoku Geiko → Randori → Control
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Participants will complete a 4-minute randori session following an approximately 15-minute standardized warm-up.
Randori will involve free judo practice with active resistance and unpredictable interaction between matched training partners.
Participants will be paired with consideration of weight category and belt level.
Participants will complete a 4-minute yakusoku geiko session following an approximately 15-minute standardized warm-up.
Yakusoku geiko will involve controlled and repetitive judo technique practice with little or no active resistance from the training partner.
Participants will be paired with consideration of weight category and belt level.
|
|
实验性的：Sequence 4: Yakusoku Geiko → Control → Randori
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Participants will complete a 4-minute randori session following an approximately 15-minute standardized warm-up.
Randori will involve free judo practice with active resistance and unpredictable interaction between matched training partners.
Participants will be paired with consideration of weight category and belt level.
Participants will complete a 4-minute yakusoku geiko session following an approximately 15-minute standardized warm-up.
Yakusoku geiko will involve controlled and repetitive judo technique practice with little or no active resistance from the training partner.
Participants will be paired with consideration of weight category and belt level.
|
|
实验性的：Sequence 5: Control → Randori → Yakusoku Geiko
|
Participants will complete a 4-minute randori session following an approximately 15-minute standardized warm-up.
Randori will involve free judo practice with active resistance and unpredictable interaction between matched training partners.
Participants will be paired with consideration of weight category and belt level.
Participants will complete a 4-minute yakusoku geiko session following an approximately 15-minute standardized warm-up.
Yakusoku geiko will involve controlled and repetitive judo technique practice with little or no active resistance from the training partner.
Participants will be paired with consideration of weight category and belt level.
|
|
实验性的：Sequence 6: Control → Yakusoku Geiko → Randori
|
Participants will complete a 4-minute randori session following an approximately 15-minute standardized warm-up.
Randori will involve free judo practice with active resistance and unpredictable interaction between matched training partners.
Participants will be paired with consideration of weight category and belt level.
Participants will complete a 4-minute yakusoku geiko session following an approximately 15-minute standardized warm-up.
Yakusoku geiko will involve controlled and repetitive judo technique practice with little or no active resistance from the training partner.
Participants will be paired with consideration of weight category and belt level.
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研究衡量的是什么？
主要结果指标
结果测量 |
大体时间 |
|---|---|
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Change in King-Devick Test Completion Time
大体时间：Immediately before and immediately after each study condition (randori, yakusoku geiko, and control) during three separate testing sessions, with 48 hours to 7 days between sessions.
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Immediately before and immediately after each study condition (randori, yakusoku geiko, and control) during three separate testing sessions, with 48 hours to 7 days between sessions.
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Change in King-Devick Test Error Count
大体时间：Immediately before and immediately after each study condition (randori, yakusoku geiko, and control) during three separate testing sessions, with 48 hours to 7 days between sessions.
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Immediately before and immediately after each study condition (randori, yakusoku geiko, and control) during three separate testing sessions, with 48 hours to 7 days between sessions.
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次要结果测量
结果测量 |
大体时间 |
|---|---|
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Change in Heart Rate
大体时间：Immediately before and immediately after each study condition (randori, yakusoku geiko, and control) during three separate testing sessions.
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Immediately before and immediately after each study condition (randori, yakusoku geiko, and control) during three separate testing sessions.
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合作者和调查者
研究记录日期
研究主要日期
学习开始 (估计的)
初级完成 (估计的)
研究完成 (估计的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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