الحفاظ النسب للطاقة كأساس بيوميكانيكي لتقييم أداء التصوب من الوثب عاليا في كرة اليد

الملخص EN

The purpose of the present study was setting a mathematical formula of relative energy conservation as a biomechanical basis for evaluation the performance of high jump throwing in handball.

Methods: Two male high level Handball players participated in this study (age: 19.5±0.5 year; mass: 80±4.24 kg; height: 183±1.41 cm), and the duration of applying the study was from 1 September 2015 to 10 January 2016.

The jump throwing were performed on a three-dimensional analysis using 8 high speed cameras (Basler scA640-120gc) and 3D simi motion analysis system was used for analysis, and strain gage force platform (BERTEC- 4060-10- Force platform).

Results: Results showed that the player can save the total acquired energy by convert a portion of kinetic energy to potential energy during flight Phase (KE at take-off 618.23±98.4 J; KE at ball release 470.21±74.25 J, and PE at take-off 1067.30±12.24 J; PE at ball release 1216.83±35.53 J).

Conclusion: The present study concluded a three mathematical formulas of relative energy conservation as a biomechanical basis for evaluation the performance of high jump throwing in handball.