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Dellal, A, Chamari, K, Pintus, A, Girard, O, Cotte, T, and Keller, D. Heart rate responses during small-sided games and short intermittent running training in elite soccer players: a comparative study. J Strength Cond Res 22 (5): 1449-1457, 2008-The purpose of this study was to compare heart rate (HR) responses within and between physical controlled (short-duration intermittent running) and physical integrated (sided games) training methods in elite soccer players. Ten adult male elite soccer players (age, 26±2.9 years; body mass, 78.3±4.4 kg; maximum HR [HRmax], 195.4±4.9 b· min− 1 and velocity at maximal aerobic speed (MAS), 17.1±0.8 km· h− 1) performed different short-duration intermittent runs, eg, 30-30 (30 seconds of exercise interspersed with 30 seconds of recovery) with active recovery, and 30-30, 15-15, 10-10, and 5-20 seconds with passive recovery, and different sided games (1 versus 1, 2 versus …