Preseason training: the effects of a 17-day high-intensity shock microcycle miércoles, 27 mayo 2015 | Fisiología y entrenamiento deportivo Fernandez‐Fernandez, J., Sanz‐Rivas, D., Sarabia, J. M., y Moya, M. (2015). Preseason training: the effects of a 17-day high-intensity shock microcycle in elite tennis players. Journal of Sports Science and Medicine, 14(3): 783‐791.