Korfball-Based Training and Motor Skill Development

NCT07140224 | Completed

• 1 other identifier: 2025/04
• Study Type: interventional
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this randomized trial is to find out if an 8-week korfball-based training program can improve lower-body strength and jumping ability in children aged 10-12 years. Korfball is a mixed-gender sport that promotes teamwork and equal participation. The study will test two main questions: Does korfball training increase explosive leg power measured by the Margaria-Kalamen Stair Climb Test? Does korfball training improve performance in the Standing Long Jump Test? Children are randomly assigned to one of two groups: Korfball Training Group: Participants take part in supervised korfball-based exercise sessions 3 times per week for 8 weeks, in addition to their normal school activities. Control Group: Participants continue with standard school physical education classes only. All participants complete both the Margaria-Kalamen Stair Climb Test and the Standing Long Jump Test before and after the 8-week period. This study will show whether korfball training is an effective and inclusive way to improve explosive leg power and motor skills in school-aged children.

Conditions

Motor Skills Development; Physical Fitness; Physical Education and Training/Methods

Keywords

korfball; explosive power; mixed-gender training; youth sports; physical education

Outcome Measures

Primary Outcomes (2)

• Margaria-Kalamen Stair Climb Test (Explosive Power)

  Change in anaerobic power output (watts) measured using the Margaria-Kalamen stair climb test. Participants sprinted up a staircase stepping on the 3rd, 6th, and 9th steps. Anaerobic power was calculated using the standard formula P = (m × g × h) / t, where m is body mass (kg), g is gravitational acceleration (9.81 m/s²), h is the vertical height between the 3rd and 9th steps (1.2 m), and t is the time taken to ascend (s).

  Baseline (pre-test) and after 8 weeks of training (post-test)

• Standing Long Jump Test (Horizontal Explosive Power)

  Change in horizontal jump distance (cm) measured using the Standing Long Jump test. Participants jumped forward from a standing start with both feet together, and the best of three trials was recorded.

  Baseline (pre-test) and after 8 weeks of training (post-test)

Study Arms (2)

Control

NO INTERVENTION

Control group continued with their usual school-based physical education classes without any additional training (8 week).

Korfball Training Group

EXPERIMENTAL

The korfball training group participated in an eight-week korfball-based movement training program, three times a week, each session lasting 90 minutes. Training consistently occurred from 16:00 to 18:00 in an outdoor korfball court under coach supervision. Each session started with 10 minutes of warming up and 5 minutes of stretching exercises. The main session included 65 minutes of korfball-based movement training, followed by a 10-minute cool-down period.

Other: Korfball-Based Movement Training

Interventions

Korfball-Based Movement Training OTHER

The weekly training content was structured as follows: * Week 1: Chest pass, overhead pass, right-left hand pass, moving pass, cool-down (15 repetitions). * Week 2: One-handed pass, penalty shot, defensive follow-up run, lay-up shot, cool-down (20 repetitions). * Week 3: One-handed pass, diagonal passing, penalty shot, lay-up shot, short and long-distance shooting (25 repetitions). * Week 4: Lay-up shot, V-cut shot, stationary short-distance shot, defensive follow-up run,penalty shot, cool-down (20 repetitions). * Week 5: V-cut shot, stationary short-distance shot, front-of-the-basket shot, behind-the-basket short-distance shot (15 repetitions). * Week 6: V-cut shot, lay-up shot, stationary shot, defensive follow-up run, penalty shot (20 repetitions). * Week 7: One-handed pass, penalty shot, lay-up shot (right-left), shooting, V-cut shot (10 repetitions). * Week 8: One-handed pass penalty shot, lay-up shot (right-left), stationary shot, V-cut shot (10 repetitions).

Korfball Training Group

Eligibility Criteria

• Age: 10 Years - 12 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17)

You may qualify if:

• Healthy children aged 10-12 years
• Regular participation in school-based physical activity or physical education classes
• Ability to attend training sessions and testing procedures for the full 8-week - period
• Written informed consent obtained from parents/guardians

You may not qualify if:

• Presence of chronic or acute illnesses (e.g., cardiovascular, respiratory, or metabolic diseases)
• Orthopedic or musculoskeletal injuries/disorders that may limit safe participation
• Neurological disorders affecting motor performance
• Lack of regular participation in physical activities prior to study enrollment
• Failure to obtain parental/guardian consent

Sponsors & Collaborators

• University of Gaziantep: lead

Study Sites (1)

Gaziantep University

Gaziantep, 27000, Turkey (Türkiye)

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Masking Details: The investigators conducting the outcome measurements were blinded to group assignments and study hypotheses to reduce bias.
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Mr.

Study Record Dates

• First Submitted: August 18, 2025
• First Posted: August 24, 2025
• Study Start: May 1, 2025
• Primary Completion: June 26, 2025
• Study Completion: June 27, 2025
• Last Updated: August 29, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ICF
• Time Frame: De-identified individual participant data (IPD) and supporting documents will be available beginning 6 months after publication of the study results and will remain accessible for 5 years thereafter.
• Access Criteria: De-identified individual participant data (IPD), including test results from the Margaria-Kalamen Stair Climb Test and the Standing Long Jump Test, as well as supporting documents (Study Protocol, Statistical Analysis Plan, Informed Consent Form), will be available to qualified academic researchers. Data will be shared solely for non-commercial, academic research purposes upon reasonable request to the corresponding author. Requests will be reviewed by the principal investigator to ensure compliance with ethical standards and data protection regulations. Access will be granted through secure data transfer after approval.

Locations

TU (1)