Motivational Regulation After an Eight-Session Peer-Mentoring Programme in Colombian Youth Swimmers: A Pre-Post Pilot Study

Reproducibility materials accompanying the manuscript “Motivational Regulation After an Eight-Session Peer-Mentoring Programme in Colombian Youth Swimmers: A Pre-Post Pilot Study”. This record contains aggregate statistical outputs, analysis code, publication-quality figures, a data dictionary, analysis specifications, and citation and metadata files for a retrospective reanalysis of prospectively collected data from 29 Colombian youth swimmers who completed an eight-session peer-mentoring programme. The primary analyses retain all 29 paired participants and evaluate the seven original motivational regulations of the Sport Motivation Scale (SMS-28). The reproducibility package documents the primary estimates, robust analyses, multiplicity adjustment, reliability diagnostics, complete-item scoring, participant-inclusion sensitivities, exploratory composite outcomes, and participant-level trajectory visualisations reported in the manuscript and supplementary material. Participant-level questionnaire data are not openly deposited because the cohort comprises minors from a single swimming club and residual re-identification risk remains even after removal of direct identifiers. Participant-level data are retained under institutional control and may be considered for access following a scientifically justified request, institutional and ethics approval, and an appropriate data-access agreement. The accompanying study received ethics approval from the Bioethics Committee of Universidad de San Buenaventura, Medellín, Colombia, under Act 9 of 2024 (2 October 2024). Code is released under the MIT License. Aggregate statistical outputs, figures, and documentation are released under the Creative Commons Attribution 4.0 International licence (CC BY 4.0).