The purpose of this study was to analyse stiffness in the mechanical system of the world’s elite high jumpers. Seven male elite high jump athletes (personal best 2.24 m ± 0.06 m) were filmed with 19 Infrared-High-Speed-Cameras during jumping. Kinetics were captured with a force plate. It was found that a different leg and joint stiffness during takeoff enables nearly the same jumping height. For example, a typical power jumper with a leg stiffness of 543.6 N m-1 kg-1 reached 2.13 m, while a typical speed jumper with a leg stiffness of 1133.5 N m-1 kg-1 reached a comparable height of 2.12 m. Therefore, it seems that sports performance in single leg jumping is not limited by athlete’s leg and joint stiffness in a small group of male elite high jumpers.
Boden, Eicke; Braunstein, Björn; Heinrich, Kai; Sanno, Maximilian; Stäudle, Benjamin; Ritzdorf, Wolfgang; Brüggemann, Gert-Peter; Albracht, Kirsten; and Goldmann, Jan-Peter
"LEG- AND JOINT STIFFNESS IN MALE ELITE HIGH JUMP: THE INFLUENCE OF STIFFNESS ON SPORTS PERFORMANCE,"
ISBS Proceedings Archive: Vol. 35
, Article 150.
Available at: http://commons.nmu.edu/isbs/vol35/iss1/150