Abstract
The aim of this study was to examine the relationship between short sprint time (5 m) and strength metrics of the countermovement jump (CMJ) using a linear transducer in a group of trained athletes. Twenty-five male, trained subjects volunteered to participate in the study. Each volunteer performed 3 maximal CMJ trials on a Smith machine. Peak instantaneous power was calculated by the product of velocity taken with the linear transducer. For sprint testing, each subject performed three maximum 5 m sprints. Only the best attempt was considered in both tests. Pearson product–moment correlation coefficients between 5 m sprint performance and strength metrics of the CMJ were generally positive and of clear moderate to strong magnitude (r = −0.664 to −0.801). More noticeable was the significant predictive value of bar displacement time (r= ∼0.70) to sprint performance. Nevertheless, a non-significant predictive value of peak bar velocity and rate of force development measurements was found. These results underline the important relationship between 5 m sprint and maximal lower body strength, as assessed by the force, power and bar velocity displacement. It is suggested that sprinting time performance would benefit from training regimens aimed to improve these performance qualities.
Highlights
Implementing objective methods to assess physical performance has become an invaluable component of athletic development, monitoring, and talent identification in sport
The purpose of this study was to investigate the relationships between short sprint ability and strength variables during a vertical jump in a group of trained subjects
This is the first study attempting to examine this issue with so much extent strength metrics measured with a linear transducer that can better explain short sprint performance in a group of trained athletes as the one presented here
Summary
Implementing objective methods to assess physical performance has become an invaluable component of athletic development, monitoring, and talent identification in sport. Common motor skills such as sprinting have biomechanical, kinematic, and muscular similarities to vertical jump movement, but determining associations between this task and short sprinting ability has proved elusive (Delecluse et al, 1995; Kukolj et al, 1999; Gorostiaga et al, 2005). Part of these discrepancies could be due to the fact that sprinting is a complex ability (Sleivert and Tringahue, 2004). These findings emphasize the dominance of the propulsive phase during initial acceleration, and the importance of
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