n African Journal for Physical Health Education, Recreation and Dance - A comparison of kinematic variables between short and tall interuniversity male long jumpers : sports science

Volume 18 Number sup-1
  • ISSN : 1117-4315


Success in long jump performance mainly depends on the ability of the athlete to transform his horizontal approach velocity into horizontal and vertical take-off velocity during the support phase of the jump. The aim of the athlete in a long jump is to attain the longest horizontal displacement from take-off to landing. The actual jump is divided into four distinct phases: the approach run, the take-off, the flight and the landing. For the purpose of the present study twelve male (6 short and 6 long) Interuniversity level long jumpers were randomly selected from All India Interuniversity Athletic championship held at Chennai, India. To obtain kinematic data a digital Sony DCR SX40E video recording camera, operating at 1/2000 with a frame rate of 60 frames per second, was used to capture the last five to six steps of the approach run and the jump. The camcorder was placed perpendicular at a distance of twelve meters on the right side of the take-off board. All subjects perform three jumps, but the best valid jump for each athlete was recorded for further analysis. The recorded video footages were downloaded and edited by using the downloaded version of STHVCD55 Software. Digitization, smoothing and analysis were conducted using the Silicon Coach Pro7 motion analysis software. The selected kinematics variables were: approach velocity, last stride length, velocity of last stride, knee angle at take-off, angle of foot planting and distance covered from the record data. Recorded data were subjected to an independent sample 't'-test for the comparison of the kinematic parameters between short and long tall jumpers. All statistical procedures were conducted using the SPSS (version 16.0) software. A level of significance was set at p≤0.05. The results of the study revealed that, there were no significant differences between short and tall long jumpers in their approach run speed, last stride length, velocity of last stride take-off leg knee angle and angle of foot planting as well as in their distances covered.

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