Effects of Morning Contrast Training Exercise on the Afternoon Priming of Judoka's Athletic and Sport-specific Performance
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 16
- 试验地点
- 1
- 主要终点
- Special Judo Fitness Test Index
研究概览
简要总结
This study investigated the effects of a morning complex-contrast training session on afternoon sport-specific and physical performance in competitive judokas. The study focused on identifying whether a stimulus targeting both force and velocity components of the force-velocity curve could induce a "delayed potentiation" effect 6 hours later and whether these responses differed by sex.
详细描述
A randomized, counterbalanced crossover design was utilized to evaluate the efficacy of a morning priming protocol (using complex-contrast training exercises) compared to a control condition. Competitive male and female judo athletes performed a low-volume, high-intensity priming session consisting of heavy resistance and ballistic exercises in a set-by-set fashion. Physical performance was assessed using the Special Judo Fitness Test, handgrip strength, and countermovement jump height. Results were analyzed to determine the fatigue-potentiation balance over a 6-hour recovery window and to examine sex-based interactions in the priming response.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- None
盲法说明
Complete blinding of participants, intervention providers, and assessors was not feasible due to the visibly distinct nature of the intervention and control protocols as well as performance testing.
入排标准
- 年龄范围
- 18 Years 至 22 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •age between 18 and 22 years;
- •competitive male or female judo athlete;
- •minimum of 3 years of experience in structured judo training;
- •previous experience with and technical proficiency in resistance and ballistic training exercises;
- •ability to correctly perform the back squat, bench press, countermovement jump, and wall ball slam;
- •technical proficiency in performing the Ippon Seoi-Nage throwing technique; previous experience with the Special Judo Fitness Test;
- •absence of musculoskeletal injuries or medical conditions that would restrict participation in maximal physical exercise;
- •ability to complete both experimental conditions and all required performance assessments;
- •provision of written informed consent before participation.
排除标准
- •less than 3 years of structured judo training experience;
- •insufficient technical proficiency in the back squat, bench press, countermovement jump, or wall ball slam;
- •inability to correctly perform the Ippon Seoi-Nage technique;
- •no previous experience with the Special Judo Fitness Test;
- •current musculoskeletal pain or injury that could affect resistance exercise, jumping, handgrip assessment, or judo-specific performance;
- •presence of a medical condition that could restrict maximal physical effort or - make participation in the intervention unsafe;
- •inability to complete either experimental condition or the required testing procedures
研究组 & 干预措施
Complex-Contrast Training Priming Condition
Participants performed a morning complex-contrast training (CCT) session designed to induce a delayed priming effect on afternoon judo-specific and neuromuscular performance. The session consisted of lower- and upper-body contrast exercise pairs combining heavy resistance exercises with biomechanically related ballistic exercises.
Following the intervention, participants completed a 6-hour passive recovery period before the afternoon performance assessment.
干预措施: Morning Complex-Contrast Training (Behavioral)
Time-Matched Walking Control Condition
Participants completed the same standardized morning warm-up and baseline measurements as in the experimental condition. Following the baseline measurements, participants walked for a period corresponding to the duration of the complex-contrast training protocol. No resistance or ballistic exercises were performed. After the walking period, participants underwent a 6-hour recovery interval before completing the afternoon performance assessments.
干预措施: Time-Matched Walking Control Condition (Behavioral)
结局指标
主要结局
Special Judo Fitness Test Index
时间窗: Approximately 6 hours post-intervention
Judo-specific performance efficiency assessed using the Special Judo Fitness Test (SJFT). The test consisted of three work periods: one 15-second period followed by two 30-second periods, separated by 10-second recovery intervals. During each period, the participant moved between two partners positioned 3 meters apart and performed the Ippon Seoi-Nage throwing technique as many times as possible. Heart rate was measured immediately after the test and 1 minute after test completion using a chest strap-based heart rate monitor. The SJFT index was calculated using the total number of completed throws and the heart rate values recorded immediately and 1 minute after the test. A lower SJFT index represents better judo-specific performance efficiency.
次要结局
- Total Number of Throws During the Special Judo Fitness Test(Approximately 6 hours post-intervention)
- Number of Throws During Individual Special Judo Fitness Test Periods(Approximately 6 hours post-intervention)
- Left-Hand Maximum Isometric Handgrip Strength(Baseline and approximately 6 hours post-intervention)
- Right-Hand Maximum Isometric Handgrip Strength(Baseline and approximately 6 hours post-intervention)
- Countermovement Jump Height(Baseline and approximately 6 hours post-intervention)
- Heart Rate Immediately After the Special Judo Fitness Test(Immediately after the Special Judo Fitness Test performed approximately 6 hours post-intervention)
- Heart Rate One Minute After the Special Judo Fitness Test(One minute after the Special Judo Fitness Test performed approximately 6 hours post-intervention)