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Priming Using Contrast Training Exercise

Effects of Morning Contrast Training Exercise on the Afternoon Priming of Judoka's Athletic and Sport-specific Performance

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.

調査の概要

状態

完了

条件

介入・治療

詳細な説明

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.

研究の種類

介入

入学 (実際)

16

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究場所

    • Silesian Voivodeship
      • Katowice、Silesian Voivodeship、ポーランド、40-065
        • Academy of Physical Education in Katowice

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人

健康ボランティアの受け入れ

はい

説明

Inclusion Criteria:

  • 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.

Exclusion Criteria:

  • 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

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:基礎科学
  • 割り当て:ランダム化
  • 介入モデル:クロスオーバー割り当て
  • マスキング:なし(オープンラベル)

武器と介入

参加者グループ / アーム
介入・治療
実験的: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.

At approximately 9:00 AM, participants completed a standardized warm-up consisting of a 10-minute self-paced jog followed by dynamic stretching. Baseline countermovement jump and maximum isometric handgrip strength measurements were subsequently performed.

The CCT intervention consisted of:

3 lower-body contrast sets, with 6 repetitions of the back squat paired with 6 maximal countermovement jumps; 3 upper-body contrast sets, with 6 repetitions of the bench press paired with 6 maximal wall ball slams.

After completing the morning session, participants underwent a 6-hour passive recovery period. At approximately 3:00 PM, they repeated the standardized warm-up and completed the countermovement jump, maximum isometric handgrip strength, and Special Judo Fitness Test assessments.

アクティブコンパレータ: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.

At approximately 9:00 AM, participants completed a standardized warm-up consisting of a 10-minute self-paced jog followed by dynamic stretching. Baseline countermovement jump and maximum isometric handgrip strength measurements were then performed.

Following the baseline measurements, participants walked for the duration required to complete the CCT protocol in the experimental condition. After the 6-hour recovery interval, participants returned at approximately 3:00 PM, repeated the standardized warm-up, and completed the countermovement jump, maximum isometric handgrip strength, and Special Judo Fitness Test assessments.

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Special Judo Fitness Test Index
時間枠: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.

Approximately 6 hours post-intervention

二次結果の測定

結果測定
メジャーの説明
時間枠
Total Number of Throws During the Special Judo Fitness Test
時間枠:Approximately 6 hours post-intervention
The total number of successfully completed Ippon Seoi-Nage throws during all three periods of the Special Judo Fitness Test. The result was calculated as the sum of throws completed during the 15-second period and the two 30-second periods. A higher number of throws indicates better judo-specific performance.
Approximately 6 hours post-intervention
Number of Throws During Individual Special Judo Fitness Test Periods
時間枠:Approximately 6 hours post-intervention

The number of successfully completed Ippon Seoi-Nage throws was recorded separately during each of the three SJFT periods:

Set 1: 15 seconds; Set 2: 30 seconds; Set 3: 30 seconds.

The work periods were separated by 10-second recovery intervals. Results were reported as the number of completed throws in each set.

Approximately 6 hours post-intervention
Left-Hand Maximum Isometric Handgrip Strength
時間枠:Baseline and approximately 6 hours post-intervention

Maximum isometric handgrip strength of the left hand measured using a handheld Jamar dynamometer (Lafayette, California, USA).

Participants were seated upright with their feet flat on the floor, the upper arm positioned close to the torso, the elbow flexed to 90°, and the wrist maintained in a neutral position. During each trial, participants exerted maximal force against the dynamometer for 5 seconds. Attempts were alternated between the left and right hands, with a 1-minute recovery interval between trials.

Handgrip strength was reported in kilograms (kg).

Baseline and approximately 6 hours post-intervention
Right-Hand Maximum Isometric Handgrip Strength
時間枠:Baseline and approximately 6 hours post-intervention

Maximum isometric handgrip strength of the right hand measured using a handheld Jamar dynamometer (Lafayette, California, USA).

Participants were seated upright with their feet flat on the floor, the upper arm positioned close to the torso, the elbow flexed to 90°, and the wrist maintained in a neutral position. During each trial, participants exerted maximal force against the dynamometer for 5 seconds. Attempts were alternated between the left and right hands, with a 1-minute recovery interval between trials.

Handgrip strength was reported in kilograms (kg).

Baseline and approximately 6 hours post-intervention
Countermovement Jump Height
時間枠:Baseline and approximately 6 hours post-intervention

Vertical jump height measured during a countermovement jump using a portable force platform sampling at 2000 Hz.

Participants performed three maximal-effort countermovement jumps with their hands positioned on their hips and were allowed to use a self-selected countermovement depth. A 1-minute recovery interval was provided between trials. Jump height was reported in centimeters (cm).

Baseline and approximately 6 hours post-intervention
Heart Rate Immediately After the Special Judo Fitness Test
時間枠:Immediately after the Special Judo Fitness Test performed approximately 6 hours post-intervention
Heart rate measured immediately following completion of the Special Judo Fitness Test using a chest strap-based heart rate monitor. Heart rate was reported in beats per minute (bpm).
Immediately after the Special Judo Fitness Test performed approximately 6 hours post-intervention
Heart Rate One Minute After the Special Judo Fitness Test
時間枠:One minute after the Special Judo Fitness Test performed approximately 6 hours post-intervention
Heart rate measured 1 minute following completion of the Special Judo Fitness Test using a chest strap-based heart rate monitor. Heart rate was reported in beats per minute (bpm).
One minute after the Special Judo Fitness Test performed approximately 6 hours post-intervention

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

捜査官

  • 主任研究者:Jakub Jarosz, PhD、Academy of Physical Education in Katowice

出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2026年3月1日

一次修了 (実際)

2026年3月20日

研究の完了 (実際)

2026年4月10日

試験登録日

最初に提出

2026年8月4日

QC基準を満たした最初の提出物

2026年8月4日

最初の投稿 (実際)

2026年8月10日

学習記録の更新

投稿された最後の更新 (実際)

2026年8月10日

QC基準を満たした最後の更新が送信されました

2026年8月4日

最終確認日

2026年8月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • RRU/SPES/IRB/2025-26/16

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

はい

IPD プランの説明

De-identified individual participant data will be shared upon reasonable request after publication of the study results. Requests should be directed to the corresponding author.

IPD 共有時間枠

Individual participant data and supporting documents will be available beginning 3 months after publication of the study results and ending 5 years following publication.

IPD 共有アクセス基準

Researchers may request access to de-identified individual participant data by contacting the corresponding author. Data will be shared upon reasonable request for scientific research purposes.

IPD 共有サポート情報タイプ

  • STUDY_PROTOCOL
  • SAP

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いいえ

米国FDA規制機器製品の研究

いいえ

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