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.
Обзор исследования
Статус
Статус
Условия
Условия
Вмешательство/лечение
Вмешательство/лечение
Подробное описание
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).
Тип исследования
Тип исследования
Регистрация (Оцененный)
Регистрация
Фаза
Фаза
- Непригодный
Контакты и местонахождение
Контакты исследования
Контакты исследования
- Имя: Denizhan Çalışkan, Dr.
- Номер телефона: +90 539 879 64 59
- Электронная почта: denizhancaliskann@gmail.com
Учебное резервное копирование контактов
- Имя: Özgür Eken, PhD, Associate Professor
- Номер телефона: +90 553 213 27 95
- Электронная почта: ozgur.eken@inonu.edu.tr
Места учебы
-
-
Malatya
-
Malatya, Malatya, Турция (Туркие), 44280
- Department of Physical Education and Sport Teaching, Faculty of Sports Sciences, Inonu University,
-
Контакт:
- Özgür Eken, PhD, Assoc. Prof.
- Номер телефона: +90 553 213 27 95
- Электронная почта: ozgur.eken@inonu.edu.tr
-
-
Критерии участия
Критерии приемлемости
Критерии приемлемости
Возраст, подходящий для обучения
Принимает здоровых добровольцев
Полы, имеющие право на обучение
Описание
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
Учебный план
Как устроено исследование?
Детали дизайна
- Основная цель: Фундаментальная наука
- Распределение: Н/Д
- Интервенционная модель: Одногрупповое задание
- Маскировка: Нет (открытая этикетка)
Количество рук
Оружие и интервенции
Группа участников / АрмияГруппа участников / Армия |
Вмешательство/лечениеВмешательство/лечение |
|---|---|
|
Экспериментальный: 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.
Другие имена:
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. |
Что измеряет исследование?
Первичные показатели результатов
Первичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Change in Blood Lactate Concentration After a Simulated Judo Match
Временное ограничение: Immediately before and within 3 minutes after the simulated match (single test session)
|
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)
|
|
Change in Countermovement Jump Height After a Simulated Judo Match
Временное ограничение: Immediately before and within 3 minutes after the simulated match (single test session)
|
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)
|
Вторичные показатели результатов
Вторичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Rating of Perceived Exertion (RPE) After a Simulated Judo Match
Временное ограничение: Within 30 seconds after the simulated match (single test session)
|
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)
|
|
Change in Handgrip Strength After a Simulated Judo Match
Временное ограничение: Immediately before and within 3 minutes after the simulated match (single test session)
|
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)
|
Соавторы и исследователи
Спонсор
Спонсор
Следователи
Следователи
- Главный следователь: Özgür Eken, PhD, Assoc. Prof., Inonu University, Faculty of Sport Sciences
- Директор по исследованиям: Denizhan Caliskan, Eskisehir Provincial Directorate of Youth and Sports, Eskisehir, Türkiye
Публикации и полезные ссылки
Общие публикации
- 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.
Даты записи исследования
Изучение основных дат
Начало исследования (Оцененный)
Начало исследования
Первичное завершение (Оцененный)
Первичное завершение
Завершение исследования (Оцененный)
Завершение исследования
Даты регистрации исследования
Первый отправленный
Первый отправленный
Впервые представлено, что соответствует критериям контроля качества
Впервые представлено, что соответствует критериям контроля качества
Первый опубликованный (Действительный)
Первый опубликованный
Обновления учебных записей
Последнее опубликованное обновление (Действительный)
Последнее опубликованное обновление
Последнее отправленное обновление, отвечающее критериям контроля качества
Последнее отправленное обновление, отвечающее критериям контроля качества
Последняя проверка
Последняя проверка
Дополнительная информация
Термины, связанные с этим исследованием
Ключевые слова
Другие идентификационные номера исследования
Другие идентификационные номера исследования
- INONU-SIMMATCH-2026-02
- SIMMATCH-2026 (Другой идентификатор: Inonu University)
Планирование данных отдельных участников (IPD)
Планируете делиться данными об отдельных участниках (IPD)?
Описание плана IPD
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.
Информация о лекарствах и устройствах, исследовательские документы
Изучает лекарственный продукт, регулируемый FDA США.
Изучает продукт устройства, регулируемый Управлением по санитарному надзору за качеством пищевых продуктов и медикаментов США.
Эта информация была получена непосредственно с веб-сайта clinicaltrials.gov без каких-либо изменений. Если у вас есть запросы на изменение, удаление или обновление сведений об исследовании, обращайтесь по адресу register@clinicaltrials.gov. Как только изменение будет реализовано на clinicaltrials.gov, оно будет автоматически обновлено и на нашем веб-сайте. .