Tämä sivu käännettiin automaattisesti, eikä käännösten tarkkuutta voida taata. Katso englanninkielinen versio lähdetekstiä varten.

Priming Using Contrast Training Exercise

tiistai 4. elokuuta 2026 päivittänyt: The Jerzy Kukuczka Academy of Physical Education in Katowice

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.

Tutkimuksen yleiskatsaus

Tila

Valmis

Ehdot

Interventio / Hoito

Yksityiskohtainen kuvaus

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.

Opintotyyppi

Interventio

Ilmoittautuminen (Todellinen)

16

Vaihe

  • Ei sovellettavissa

Yhteystiedot ja paikat

Tässä osiossa on tutkimuksen suorittajien yhteystiedot ja tiedot siitä, missä tämä tutkimus suoritetaan.

Opiskelupaikat

    • Silesian Voivodeship
      • Katowice, Silesian Voivodeship, Puola, 40-065
        • Academy of Physical Education in Katowice

Osallistumiskriteerit

Tutkijat etsivät ihmisiä, jotka sopivat tiettyyn kuvaukseen, jota kutsutaan kelpoisuuskriteereiksi. Joitakin esimerkkejä näistä kriteereistä ovat henkilön yleinen terveydentila tai aiemmat hoidot.

Kelpoisuusvaatimukset

Opintokelpoiset iät

  • Aikuinen

Hyväksyy terveitä vapaaehtoisia

Joo

Kuvaus

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

Opintosuunnitelma

Tässä osiossa on tietoja tutkimussuunnitelmasta, mukaan lukien kuinka tutkimus on suunniteltu ja mitä tutkimuksella mitataan.

Miten tutkimus on suunniteltu?

Suunnittelun yksityiskohdat

  • Ensisijainen käyttötarkoitus: Perustiede
  • Jako: Satunnaistettu
  • Inventiomalli: Crossover-tehtävä
  • Naamiointi: Ei mitään (avoin tarra)

Aseet ja interventiot

Osallistujaryhmä / Arm
Interventio / Hoito
Kokeellinen: 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.

Active Comparator: 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.

Mitä tutkimuksessa mitataan?

Ensisijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Special Judo Fitness Test Index
Aikaikkuna: 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

Toissijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Total Number of Throws During the Special Judo Fitness Test
Aikaikkuna: 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
Aikaikkuna: 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
Aikaikkuna: 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
Aikaikkuna: 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
Aikaikkuna: 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
Aikaikkuna: 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
Aikaikkuna: 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

Yhteistyökumppanit ja tutkijat

Täältä löydät tähän tutkimukseen osallistuvat ihmiset ja organisaatiot.

Sponsori

Tutkijat

  • Päätutkija: Jakub Jarosz, PhD, Academy of Physical Education in Katowice

Julkaisuja ja hyödyllisiä linkkejä

Tutkimusta koskevien tietojen syöttämisestä vastaava henkilö toimittaa nämä julkaisut vapaaehtoisesti. Nämä voivat koskea mitä tahansa tutkimukseen liittyvää.

Opintojen ennätyspäivät

Nämä päivämäärät seuraavat ClinicalTrials.gov-sivustolle lähetettyjen tutkimustietueiden ja yhteenvetojen edistymistä. National Library of Medicine (NLM) tarkistaa tutkimustiedot ja raportoidut tulokset varmistaakseen, että ne täyttävät tietyt laadunvalvontastandardit, ennen kuin ne julkaistaan ​​julkisella verkkosivustolla.

Opi tärkeimmät päivämäärät

Opiskelun aloitus (Todellinen)

Sunnuntai 1. maaliskuuta 2026

Ensisijainen valmistuminen (Todellinen)

Perjantai 20. maaliskuuta 2026

Opintojen valmistuminen (Todellinen)

Perjantai 10. huhtikuuta 2026

Opintoihin ilmoittautumispäivät

Ensimmäinen lähetetty

Tiistai 4. elokuuta 2026

Ensimmäinen toimitettu, joka täytti QC-kriteerit

Tiistai 4. elokuuta 2026

Ensimmäinen Lähetetty (Todellinen)

Maanantai 10. elokuuta 2026

Tutkimustietojen päivitykset

Viimeisin päivitys julkaistu (Todellinen)

Maanantai 10. elokuuta 2026

Viimeisin lähetetty päivitys, joka täytti QC-kriteerit

Tiistai 4. elokuuta 2026

Viimeksi vahvistettu

Lauantai 1. elokuuta 2026

Lisää tietoa

Tähän tutkimukseen liittyvät termit

Muut tutkimustunnusnumerot

  • RRU/SPES/IRB/2025-26/16

Yksittäisten osallistujien tietojen suunnitelma (IPD)

Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?

JOO

IPD-suunnitelman kuvaus

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-jaon aikakehys

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-jaon käyttöoikeuskriteerit

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-jakamista tukeva tietotyyppi

  • STUDY_PROTOCOL
  • MAHLA

Lääke- ja laitetiedot, tutkimusasiakirjat

Tutkii yhdysvaltalaista FDA sääntelemää lääkevalmistetta

Ei

Tutkii yhdysvaltalaista FDA sääntelemää laitetuotetta

Ei

Nämä tiedot haettiin suoraan verkkosivustolta clinicaltrials.gov ilman muutoksia. Jos sinulla on pyyntöjä muuttaa, poistaa tai päivittää tutkimustietojasi, ota yhteyttä register@clinicaltrials.gov. Heti kun muutos on otettu käyttöön osoitteessa clinicaltrials.gov, se päivitetään automaattisesti myös verkkosivustollemme .