The effects of different warm-up protocols on strength and speed values for young football players

Objective: The study is established to describe the levels relatively lent you to the ability of explosive strength, reactive strength and speed of young soccer players to which different protocols of initial conditioning have been introduced. Methods: n.48 young soccer players, divided in two groups of which one experimental (n=27) and one of control (n=21). That experimental has been divided in turn in two subgroups (protocol static stretching, GSS n=15 and protocol rapidity, GSR n=12). For the evaluation of the components of reactive strength and explosive strength of the inferior limbs a conductance platform has been used you register Counter Mouvement Jump (CMJ), Drop Jump (DJ), Counter Mouvement Jump to free upper limb (CMJ as). For the speed the 20m test has been effected with lock departure and survey with photoelectric cells, while for the rapidity tapping test has been used. Results: Significant differences were observed between GC, GSS and GSR for CMJ: this jump test for the GC has shown an elevation of c.o.g. of 31,6 ±s 3,7 cms; for the GSS of 33,2 ±s 4,2 cms and for the GSR of 34,4 ±s 4,1 cms (p <0.05). The CMJas has made to respectively record for the GC, GSS and GSR values equal to 38,8 ±s 4,3 cms, 38,0 ±s 5,6 cms and 39,6 ±s 3,5 cms without any meaningful difference statistically. In the DJ in reference to the elevation of c.o.g. they are respectively noticed for the GC, GSS and GSR values equal to 27,0 ±s 4,3 cms, 30,4 ±s 4,3 (p <0.05) cm and 30,8 ±s 4,3 cms (p <0.03); in reference to the times of contact they are respectively noticed for the GC, GSS and GSR values equal to 285,1 ±s 58,6 ms, 304,1 ±s 63,7 ms and 250,1 ±s 41,3 ms (p <0.05). In the 20m test they are respectively recorded for the GC, GSS and GSR values equal to 3,7 ±s 0,3 sec, 3,5 ±s 0,2 sec and 3,3 ±s 0,2 sec (p <0.001). In the test of tapping meaningful differences are not statistically been underlined. Discussion: The data underline as a protocol of warm up constituted by exercises of rapidity to load of the inferior limb can allow a best performance in the cmj and in the 20m test in comparison to who performs a protocol of warm-up type traditional. Such tendency is also confirmed in the performance of measured reactive strength through drop jump. The most interesting aspect concerns the differences among the times of contact that within the reported performance to the sporting games it purchases a conclusive importance: the GSR meaningfully gets values (p <0.05) more lower part of the GSS, probably supported by an ability of more effective temporal recruitment and a more elevated muscular stiffness. Conclusions: The differences in the CMJas and those in the test of tapping are not meaningful, probably because of the involvement of coordinate pattern that they are not tightly influenced by the different protocols of heating. The acute effects of the stretching static asset they seem to negatively condition the muscular stiffness and the ability of acceleration of the young soccer player.