found that maximal strength during knee flexion and extension decrease substantially after ballistic streching.
found that PNF streching decreased countermovement jump height,
found minimal reduction in static jump height and explosive force production following PNF
streching. Therefore,further research is needed to determine the effect of different mode of streching on the performance of athletic movement
observed a 28% decrease in isometric plantarflexor torque immediately after 30 minutes of static stretching , torque remained decreased by 9% at 60 minutes.
However,a limitation of this research was that the volume of stretching did not represent what an athlete would typically perform not did it represent the complexity of movements performed in competition Therefore, it is not know whether this deficit would occur in athletic movement such as the vertical jump after a smaller volume of stretching