Physical fitness is associated with perceived quality of life and mental health among adults enrolling in a university extension program: a cross-sectional study. SciELO Preprints, 2026. DOI: 10.1590/SciELOPreprints.15988. Disponível em: https://preprints.scielo.org/index.php/scielo/preprint/view/15988. Acesso em: 5 jun. 2026.