Time-motion characteristics and physiological responses of small-sided games in elite youth players: The influence of player number and rule changes - Hill-Haas, S. V; Coutts, A. J; Dawson, B. T.; Rowsell, G. (The Journal of Strength and Conditioning Research, 2010)
Keywords: soccer; sport physiology; movement characteristic; competition rules and regulations; youth; junior elite sport; playing position (sport games); USA; sport games; junior sports