Pinto, V.P., Teles, J.M.V. and Massuça, L.M.R. da C. 2024. Reference ages of medallists at the Portuguese athletics championships: A 30-year study (1990-2019). Journal of Physical Education . 34, 1 (Feb. 2024), e-3454. DOI:https://doi.org/10.4025/jphyseduc.v34i1.3454.