Effects of 8-Week CrossFit-Based Concurrent Training on Fitness, Body Composition, and Psychological Outcomes in Schoolchildren

Starting soon · Not applicable

Conditions studied: Children, Crossfit, Psychology, Child, Physical Fitness, Body Composition

In brief

This study examines the effects of an 8-week CrossFit-based concurrent training program in boys and girls aged 7 to 11 years, comparing an experimental group (n=15) with a control group (n=15). The aim is to assess changes in strength, cardiorespiratory fitness, body composition, and psychological variables such as anxiety, stress, and self-esteem, using field-based physical tests (CMJ, Course Navette, handgrip strength, etc.) and validated questionnaires. The study follows a randomized controlled trial design with pre- and post-intervention assessments. The experimental group will complete two weekly CrossFit sessions adapted for children, while the control group will maintain their usual routine without structured physical training. The hypothesis states that the intervention will significantly improve both physical performance and psychological well-being in the experimental group compared to the control group.

Key facts

Study ID

NCT07552844

Run by

Maimónides Biomedical Research Institute of Córdoba

People needed

30

Starts

2026-06-01

Expected to finish

2026-07-01

Last updated by the study team

2026-04-30

Who can join

Age: 7 and older, up to 11. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Age: 7-11 years.
• Students enrolled at CEIP Pablo García Baena (Córdoba).
• For the experimental group:
• Availability to attend the Triple XXX Box (Polígono Pedroches, C. los Alfareros, Parcel 119, 14014 Córdoba), where both assessments and training sessions will be conducted.
• Availability to attend training sessions twice per week for the 8-week intervention period.
• No participation in extracurricular physical activity prior to the start of the CrossFit program.
• For the control group:
• No participation in extracurricular physical activity. Informed consent signed by parents or legal guardians. No medical, psychological, or behavioral contraindications that would prevent participation in physical activity.

You may not qualify if…

• Children with musculoskeletal injuries, diseases, or medical, psychological, or behavioral conditions that limit physical activity or interfere with the assessment of outcomes.
• Inability or anticipated difficulty in regularly attending training sessions.
• Refusal of parents or legal guardians to provide informed consent.

Where it is running

• IMIBIC — Córdoba, Córdoba, Spain

Full record on ClinicalTrials.gov

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