Usage of running drills in an interval training program: implications related to biomechanical parameters of running - Azevedo, Ana P. S; Mezêncio, Bruno; Valvassori, Raísa; Anjos, Fernanda O. M; Barbanti, Valdir J; Amadio, Alberto Carlos; Serrão, Júlio Cerca (Journal of Strength and Conditioning Research, 2015)