Author(s): Dr. Manesh Kumar Murali M and Dr. Sakeer Hussain VP

Abstract:
The purposes of this study were to investigate the effect of the selected kinematical parameters and official distance. Video graphic data of best 13 male discus throwers' competitive performances were captured during in 55^th National Inter State senior Athletics Championships - 2015, held at Jawaharlal Nahru Stadium, Chennai. Eight variables were selected for the study. They included Official Distance (m), Release Angle (deg) Release Height (m), Release Velocity (ms), Shoulder-hip separation at release (deg), Arm- shoulder separation at release (deg), Throwing arm elevation at release (deg), Trunk forward-backward tilt at release (deg). Basic parameters were extracted by customary kinematic analysis method using the three-dimensional DLT was applied to locate three-dimensional coordinate data of the endpoint of 15 body segments with one part of discus. The release velocity, height and angle are presented as important biomechanical parameters. Suggestions for controlling the height of release and the release velocity of the using an effective technique for improved performance. Additionally, release velocity must be improved because throwing distance is directly proportional to squared release velocity. In conclusion, the current study demonstrated comprehensive kinematical analyses, which can be used to instruct the jumping discus throwing technique with duration and angle characteristics of throwing movement for athletes by coaches with videos.

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