This study is a randomised controlled pilot trial designed to evaluate the feasibility, safety, and preliminary efficacy of a 12-week resistance training intervention in children aged 10-14 years. The study adheres to the CONSORT extension for randomised pilot and feasibility trials and incorporates key elements of the SPIRIT guidelines for clinical trial protocols.
The primary purpose of the study is to assess feasibility-related outcomes and to generate effect size estimates to inform the design of a subsequent fully powered randomised controlled trial (RCT).
Children aged 10-14 years
Ability to safely participate in supervised resistance training
Written informed consent from a parent or legal guardian
Assent provided by the child participant
Acute illness at the time of enrolment
Recent musculoskeletal injury or immobilisation
Chronic cardiovascular, metabolic, or endocrine disorders
Use of medications that may affect muscle composition or function