Baseline Neuromuscular Performance and Responses to a Simulated Match in Young Athletes (SIMMATCH-NM)
Predictive Power of Baseline Neuromuscular Performance Characteristics for Physiological and Perceptual Responses After a Simulated Match in Young Athletes
This study looks at whether the physical fitness of young judo athletes before a match can help predict how their bodies and effort perception respond after a match. Judo matches are short, intense and tiring. After a match, athletes show higher blood lactate (a marker of intense effort), weaker grip strength and lower jump height. Not much is known about whether baseline tests of core endurance, throwing power, speed, agility and force-velocity profile can predict these changes in young athletes. Male judo athletes aged 10-13 years will complete these baseline tests in one session and then take part in one 3-minute simulated judo match with a training partner of similar body mass. Blood lactate, vertical jump height and grip strength will be measured before and right after the match, and athletes will rate how hard the match felt. The study will examine how the changes after the match relate to the baseline test results. The findings may help coaches monitor training load and plan conditioning for young judo athletes.
Tutkimuksen yleiskatsaus
Tila
Tila
Ehdot
Ehdot
Interventio / Hoito
Interventio / Hoito
Yksityiskohtainen kuvaus
Judo is a high-intensity intermittent combat sport. Matches produce marked blood lactate accumulation, loss of handgrip strength, and reduced lower-body power. Baseline physical profiling is widely used to monitor athletic development, but its ability to predict individual physiological and perceptual responses to a judo match in young athletes is not well understood.
This is a single-group, pre-post study. Fifteen male judo athletes aged 10-13 years will be recruited in Malatya, Turkey. Written informed consent will be obtained from parents or legal guardians, and assent from participants. About one week before testing, participants are familiarized with the procedures and the Borg 6-20 rating of perceived exertion (RPE) scale. Participants avoid high-intensity training, caffeine and ergogenic supplements for 48 hours before testing. Testing takes place in a climate-controlled hall (20-22 °C).
Test day: After anthropometric measurements, baseline profiling is performed: McGill core endurance tests (trunk flexion, trunk extension, right and left lateral bridge), a 2-kg backward overhead medicine ball throw, a 20-m sprint, the pro-agility test, and a force-velocity profile using Samozino's field method (MyJump2 app, 240 fps video). After a standardized 10-minute warm-up (low-intensity jogging, dynamic stretching, breakfalls), pre-match measures are taken: blood lactate (finger-prick capillary sample, single-use lancet), countermovement jump height (contact mat) and handgrip strength (hand dynamometer).
Athletes then complete one 3-minute simulated judo match (randori) under International Judo Federation rules with a training partner of similar body mass (±5 kg), supervised by a coach. Immediately afterwards, blood lactate, jump height, grip strength and RPE are measured in this order within about 3 minutes.
Pre- and post-match values are compared with paired-samples t-tests (Cohen's d). Change scores (post minus pre) for lactate, jump height and grip strength, and RPE, are related to baseline variables using Pearson correlation and simple linear regression. The sample size (minimum 15) was calculated with G*Power for a paired t-test (d = 0.80, alpha = 0.05, power = 0.80).
Opintotyyppi
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Ilmoittautuminen
Vaihe
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskeluyhteys
Opiskeluyhteys
- Nimi: Denizhan Çalışkan, Dr.
- Puhelinnumero: +90 539 879 64 59
- Sähköposti: denizhancaliskann@gmail.com
Tutki yhteystietojen varmuuskopiointi
- Nimi: Özgür Eken, PhD, Associate Professor
- Puhelinnumero: +90 553 213 27 95
- Sähköposti: ozgur.eken@inonu.edu.tr
Opiskelupaikat
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Malatya
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Malatya, Malatya, Turkki (Türkiye), 44280
- Department of Physical Education and Sport Teaching, Faculty of Sports Sciences, Inonu University,
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Ottaa yhteyttä:
- Özgür Eken, PhD, Assoc. Prof.
- Puhelinnumero: +90 553 213 27 95
- Sähköposti: ozgur.eken@inonu.edu.tr
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Kelpoisuusvaatimukset
Opintokelpoiset iät
Hyväksyy terveitä vapaaehtoisia
Sukupuolet, jotka voivat opiskella
Kuvaus
Inclusion Criteria:
- Actively competing judo athlete in Malatya, Turkey
- Male, aged 10-13 years
- At least 2 years of regular judo training and competition experience
- At least four structured technical-tactical training sessions per week
- No limiting musculoskeletal injury in the last 6 months
- No musculoskeletal, cardiometabolic, or neurological condition that could prevent testing
- Willing to participate in all planned tests
- Written informed consent signed by parent or legal guardian, and assent from the participant
Exclusion Criteria:
- Younger than 10 or older than 13 years
- Musculoskeletal injury or surgery within the last 6 months
- Musculoskeletal, cardiometabolic, or neurological condition that could prevent testing
- Open wound, varicose veins, acute inflammation, or history of thrombosis
- Regular use of analgesic or anti-inflammatory medication or ergogenic supplements in the last 3 months
- Unable to attend all planned testing sessions
- Unwilling to follow the pre-test rules (no high-intensity training, caffeine or ergogenic supplements for 48 hours; usual diet, hydration and rest)
- Withdrawal during the study due to non-compliance, incomplete sessions, acute injury during the simulated match, serious illness, or participant request
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Perustiede
- Jako: Ei käytössä
- Inventiomalli: Yksittäinen ryhmätehtävä
- Naamiointi: Ei mitään (avoin tarra)
Aseiden lukumäärä
Aseet ja interventiot
Osallistujaryhmä / ArmOsallistujaryhmä / Arm |
Interventio / HoitoInterventio / Hoito |
|---|---|
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Kokeellinen: Young Judo Athletes
Male judo athletes aged 10-13 years complete baseline physical profiling, followed by one standardized 3-minute simulated judo match. Blood lactate, jump height, grip strength and perceived exertion are measured before and immediately after the match. |
One 3-minute simulated judo match (randori) performed under International Judo Federation rules against a training partner of similar body mass (±5 kg), supervised by a coach. Athletes are instructed to fight at maximal competitive intensity.
Muut nimet:
McGill core endurance tests, 2-kg backward overhead medicine ball throw, 20-m sprint, pro-agility test and force-velocity profile (Samozino's field method). Followed by pre- and post-match measures of blood lactate, countermovement jump height, handgrip strength and rating of perceived exertion. |
Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Change in Blood Lactate Concentration After a Simulated Judo Match
Aikaikkuna: Immediately before and within 3 minutes after the simulated match (single test session)
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Change (post-match minus pre-match) in capillary blood lactate concentration (mmol/L), measured from a finger-prick sample with a portable lactate analyzer. The relationship of this change with baseline physical performance variables is also analyzed. |
Immediately before and within 3 minutes after the simulated match (single test session)
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Change in Countermovement Jump Height After a Simulated Judo Match
Aikaikkuna: Immediately before and within 3 minutes after the simulated match (single test session)
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Change (post-match minus pre-match) in maximal isometric handgrip strength (kg) of the dominant hand, measured with a hand dynamometer (best of two trials). |
Immediately before and within 3 minutes after the simulated match (single test session)
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Toissijaiset tulostoimenpiteet
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Rating of Perceived Exertion (RPE) After a Simulated Judo Match
Aikaikkuna: Within 30 seconds after the simulated match (single test session)
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Perceived effort of the simulated match rated on the Borg 6-20 RPE scale (6 = no exertion, 20 = maximal exertion). |
Within 30 seconds after the simulated match (single test session)
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Change in Handgrip Strength After a Simulated Judo Match
Aikaikkuna: Immediately before and within 3 minutes after the simulated match (single test session)
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Change (post-match minus pre-match) in maximal isometric handgrip strength (kg) of the dominant hand, measured with a hand dynamometer (best of two trials). |
Immediately before and within 3 minutes after the simulated match (single test session)
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Yhteistyökumppanit ja tutkijat
Sponsori
Sponsori
Tutkijat
Tutkijat
- Päätutkija: Özgür Eken, PhD, Assoc. Prof., Inonu University, Faculty of Sport Sciences
- Opintojohtaja: Denizhan Caliskan, Eskisehir Provincial Directorate of Youth and Sports, Eskisehir, Türkiye
Julkaisuja ja hyödyllisiä linkkejä
Yleiset julkaisut
- McGill SM, Childs A, Liebenson C. Endurance times for low back stabilization exercises: clinical targets for testing and training from a normal database. Arch Phys Med Rehabil. 1999 Aug;80(8):941-4. doi: 10.1016/s0003-9993(99)90087-4.
- Franchini E, Del Vecchio FB, Matsushigue KA, Artioli GG. Physiological profiles of elite judo athletes. Sports Med. 2011 Feb 1;41(2):147-66. doi: 10.2165/11538580-000000000-00000.
- Samozino P, Rejc E, Di Prampero PE, Belli A, Morin JB. Optimal force-velocity profile in ballistic movements--altius: citius or fortius? Med Sci Sports Exerc. 2012 Feb;44(2):313-22. doi: 10.1249/MSS.0b013e31822d757a.
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Arvioitu)
Opiskelun aloitus
Ensisijainen valmistuminen (Arvioitu)
Ensisijainen valmistuminen
Opintojen valmistuminen (Arvioitu)
Opintojen valmistuminen
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Ensimmäinen Lähetetty
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin päivitys julkaistu
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muut tutkimustunnusnumerot
Muut tutkimustunnusnumerot
- INONU-SIMMATCH-2026-02
- SIMMATCH-2026 (Muu tunniste: Inonu University)
Yksittäisten osallistujien tietojen suunnitelma (IPD)
Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?
IPD-suunnitelman kuvaus
Individual participant data will not be shared, because participants are minors and the consent forms state that data will be used only for the purposes of this research and kept confidential. Aggregate results will be published.
Lääke- ja laitetiedot, tutkimusasiakirjat
Tutkii yhdysvaltalaista FDA sääntelemää lääkevalmistetta
Tutkii yhdysvaltalaista FDA sääntelemää laitetuotetta
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