Martínez-Hernández, J., Medrano-Antúnez, R. and Nápoles-Marsillán, Y. 2021. Main factors and methods that condition the development of force. An approximation to his study. Ciencia y Deporte. 6, 2 (Apr. 2021), 108 - 121. DOI:https://doi.org/10.34982/2223.1773.2021.V6.No2.008.