Résumé:
Soccer is the most popular sport in the world and is played regardless of such factors as sport performance. Whereas there has been much debate as to optimal the dominant energy systems where some authors confirm that soccer is aerobic activities (Wener W.K.et al, 2016) based on the soccer match which is aerobically fueled (Marc Briggs, 2013) while other authors affirm that Soccer is mixed aerobic-anaerobic sportrequiring players to display great muscular power with the capacity to produce energy (Jens Bangsbo,et al , 2014)and (T. Reilly,et al, 2013) according to(Bompa, Tudor,et al , 2015) that The dominant energy systems used in soccer are anaerobic lactic (50 percent), alactic (40 percent), and aerobic (10 percent). The purpose of this paper therefore was to conduct analysis based on tonic muscle in the lack of biopsy test among our institute based on the background that Muscle tone requires The measured phasic,a rapid contraction in response to a high degree of stretch; and postural tone, a prolonged (Jo E. et al, 2007). Our assuming was based on killy test "isometric knee extensor endurance" and Surensen-Biering test "isometric endurance of trunk extensor" (Outrequin J.et al, 2011) comparing to values Couper (vo2max) and RAST (anaerobic) tests (Meckel Y, et al., 2009) to determine the types of muscles, ―slow‖ and ―fast,‖ developed by Our 12 attackers under 18 years based on their sporting past trainingwhere the most important physical capacity for an attacking soccerin our opinion is speed —reaction speed, acceleration, power and quick limb whereas (Jay Martin, 2011)summaries in Speed and anaerobic capacity which they are a necessary physical criteria movementsamong the attackers. According to the statistical analysis based on Regression as a method we confirm that our Algerian attackers developmore aerobic dominant energy systems due to the concentration of the coach in developing Strength lower bodywherethese practices does not correspond in our opinion with the demands of modern football, which is based on the requirements positions.
