Core Endurance and Throw Performance in Young Judokas

NCT07586020 | Completed

• 1 other identifier: INU-JUDO-CORE-2025-01
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

This cross-sectional study aims to investigate the association between core endurance, medicine ball throw performance, and static balance in young male judokas aged 10-13 years. Core endurance will be assessed using McGill's isometric core endurance protocol, including trunk flexion, trunk extension, and lateral bridge tests. Explosive performance will be evaluated using the backward overhead medicine ball throw test, while static balance will be assessed using the Flamingo Balance Test. Correlation and regression analyses will be conducted to examine the relationships between core endurance and performance variables. The findings may contribute to understanding the role of core endurance in youth judo performance.

Conditions

Judo Performance; Balance; Explosive Power; Core Endurance

Keywords

Core endurance; medicine ball throw; balance; judo; young athletes; cross-sectional study

Outcome Measures

Primary Outcomes (1)

• Core Endurance (McGill's Test Battery)

  Total core endurance measured through four isometric tests: trunk flexion, trunk extension, right lateral bridge, and left lateral bridge. Each test measures the duration (in seconds) the participant can maintain the required position.

  Baseline

Secondary Outcomes (2)

• Explosive Power (Backward Overhead Medicine Ball Throw)

  Baseline

• Static Balance (Flamenco Balance Test)

  Baseline

Study Arms (1)

judokas

EXPERIMENTAL

A single group of 20 young male judokas (aged 10-13 years) who underwent physical performance testing, including core endurance, medicine ball throw, and static balance assessments.

Other: McGill's Core Endurance Test Battery; Other: Backward Overhead Medicine Ball Throw; Other: Flamenco Balance Test

Interventions

McGill's Core Endurance Test Battery OTHER

Participants performed four isometric endurance tests: trunk flexor, trunk extensor, and right/left lateral bridge tests to assess core stability.

judokas

Backward Overhead Medicine Ball Throw OTHER

Used to measure explosive power. Participants threw a 2 kg medicine ball backward over their head for maximum distance

judokas

Flamenco Balance Test OTHER

A static balance test where participants stood on one leg on a metal beam for as long as possible

judokas

Eligibility Criteria

• Age: 10 Years - 13 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Child (0-17)

You may qualify if:

• Being a male judoka aged between 10 and 13 years.
• Having at least 2 years of regular judo training experience
• Training at least 3 days per week regularly
• Volunteering to participate in the study and providing parental informed consent
• Being free from any physical injuries or health conditions that could interfere with physical performance testing

You may not qualify if:

• Having any acute or chronic musculoskeletal injuries within the last 6 months
• Having a history of surgery that affects physical movement or balance
• Using any medication or supplements that could influence physical performance or balance during the testing period
• Failure to complete all the required test protocols
• Any neurological or vestibular disorders that affect static balance

Sponsors & Collaborators

• Inonu University: lead

Study Sites (1)

epartment of Physical Education and Sport Teaching, Faculty of Sports Sciences, Inonu University,

Malatya, Malatya, 44280, Turkey (Türkiye)

Location

Related Publications (1)

• Stockbrugger BA, Haennel RG. Validity and reliability of a medicine ball explosive power test. J Strength Cond Res. 2001 Nov;15(4):431-8.

  PMID: 11726253 BACKGROUND

Study Officials

• Özgür Eken, PhD, Assoc. Prof

  Inonu University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate Professor, PhD

Model Details: This is a cross-sectional study evaluating the associations between core endurance, medicine ball throw performance, and static balance in a single cohort of young male judokas.

Study Record Dates

• First Submitted: May 8, 2026
• First Posted: May 14, 2026
• Study Start: January 15, 2026
• Primary Completion: February 15, 2026
• Study Completion: April 15, 2026
• Last Updated: May 14, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)