Canário-Lemos, Rui, et al. “Control De La Intensidad Del Esfuerzo. Frecuencia Cardiaca O percepción De Esfuerzo Percibido (Control of the Intensity of Effort. Heart Rate or Rate of Perceived Effort)”. Retos, vol. 49, June 2023, pp. 35-42, https://doi.org/10.47197/retos.v49.97762.