مجلة الرافدين للعلوم الرياضية (Aug 2014)
Differentiation between Excellent and First-Grade Players According to a Number of Skilful Variables and Body Measurements in Volleyball
Abstract
The research aims at : - Determining the most important skilful variables and body measurements for volleyball players ( 1st and excellent grades ) . - Obtaining separately both functions of skilful differentiation and body measurements for volleyball players ( 1st and excellent grades ) . The researchers have adopted the descriptive methodology with a survey style for its convenience to the nature of the research. The research community consists of the volleyball players . The sample has been selected randomly. It includes (29) volleyball players ( excellence Grade ) belonging to (Erbil sport club, Akad Einkawa club, and Shaklawah club ) and (48) 1st grade volleyball players belonging to ( Qaraqoush sport club, Ashourjah sport club , Suolav Al-Jadeed sport club, and Neshtiman sport club) . Thus, the total number becomes (77) players. A number of skilful tests have been applied ,like : the upper serve test , test of reception accuracy from serving , overhand passing test from rear area ,test of diametrical and linear smashing striking accuracy , screen test , and the test of defense skill accuracy from centre (6).On the other hand , the used body measurements are ( body weight , total body length , body length with hands up , arm length with the hand length , leg length , shoulders width , chest width, brachium circumference and thigh circumference ). The results have been processed by using SPSS. So, the researchers have concluded the following results: - Obtaining the equation of differentiation for the skilful variables and extracting three variables ( smashing striking , serve reception , and defending the field ) which have the ability to differentiate the volleyball players ( the excellent and the first grades ). - Obtaining the equation of differentiation for body measurements and extracting three measurements (shoulders width, total body length, and brachium circumference) which have the ability to differentiate the volleyball players ( the excellent and the first grades ). - Using the skilful variables and body measurements resulted from the research as an initial style in selecting the volleyball players ( 1st and excellent grades ) . - The need to pay attention to the skilful variables and body measurements, which have the ability to differentiate the volleyball players to be a base and support for the volleyball coaches. - Taking into account the following differentiating factors in volleyball when selecting and training players in addition to develop all the values as much as possible. The factors are : the skill accuracy of diametrical and linear smashing striketing , measuring reception accuracy from serving , defending the field , shoulders width , total body length and brachium circumference . - Making studies on other morphological and functional variables that effect on players level in volleyball.
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