Arias Moreno, E., García-Díaz, E., Rodríguez-Torres, F. ., & Guerrero-González, S. (2022). Analysis of step frequency as an indicator of physical activity in Ecuadorian schoolchildren. Sportis. Scientific Technical Journal of School Sport, Physical Education and Psychomotricity, 8(2), 152–175. https://doi.org/10.17979/sportis.2022.8.2.8791