Effects of the number of players and game type constraints on heart rate, rating of perceived exertion, and technical actions of small-sided soccer games - Abrantes, C. I.; Nunes, M. I.; Macas, V. M.; Leite, N. M.; Sampaio, J. E. (The Journal of Strength and Conditioning Research, 2012)
Keywords: soccer; tactics; team; relation; heart rate; perception; load; technique; RPE; USA; sport games