Mariño-Carrión, E., Vargas-Cuenca, G. and Mármol-Escobar, O. 2022. Professional profile of instructors in gyms in the city of Cuenca - Ecuador. CIENCIAMATRIA. 8, 3 (Aug. 2022), 1081-1102. DOI:https://doi.org/10.35381/cm.v8i3.817.