Active landing velocity: pawing motion

The significance of this study is to newly examine a factor of sprint performance. Previous studies have examined the limiting factor of vertical force of contact during a sprint. Studies have yet to look at the horizontal velocity of the foot with respect to the center of mass prior to contact in a sprint. This study will look at this horizontal velocity to examine if that is also a limiting factor during the sprint. Past studies have shown that vertical forces of sprinters are as big two to three times the body weight during a sprint then when trying to stand (Ficklin \u26 Dapena, 2011) and that vertical force production (i.e. vertical impulse made in short times) limits the running speed of sprinters (Weyand; 2000, 2010) The purpose of this study is to find out how fast sprinters can bring their feet backward as in active landing in order to determine what, if any, limits the motion may impose on sprint speed