Dabas Molina DA, de la Cruz Chalá VE, Romero Frómeta E. Technical efficiency of the Ecuadorian senior athletic relays 4 x 100 m in the four-year period 2016-2019. ed [Internet]. 2022Sep.5 [cited 2026Jul.18];6(3):208-27. Available from: https://doi.org/10.33262/exploradordigital.v6i3.2295