Influence of the numbers of players in the heart rate responses of youth soccer players within 2 vs. 2, 3 vs. 3 and 4 vs. 4 small-sided games - Dellal, A.; Jannault, R.; Lopez-Segovia, M.; Pialoux, V. (Journal of Human Kinetics, 2011)
Keywords: soccer; game form; load; load intensity; youth; junior elite sport; heart rate; heart; frequency; Poland; sport games; junior sports; biological and medical sciences