The Percentage Contribution of some Biomechanical Variables in Strength and Accuracy of Forehand and Backhand Strokes for Tennis Players

Abstract

Abstract

The research aims to investigate the correlation between the strength of forehand, backhand strokes and some biomechanical variables as well as investigate the correlation between accuracy of forehand, backhand strokes and some of biomechanical variables, also toknow the percentage contribution of some biomechanical variables in strength and accuracy of forehand and backhand strokes performance. The researchers used the descriptive method by (Evaluation Associatively relations style). The sample of research consisted of 12 advanced tennis players in Karbala city above 18 years.Theresearchers used observation (video photography, kinetic analysis) and objective tests as a means for collecting the information. Foranalyzing the data statistically, researchers used the (SPSS) statistical package. The researchersconcluded there is a significant negative correlation between the strength of the forehand stroke in tennis and the angular velocity of the arm, as well as There is a significant correlation between accuracy of forehand stroke in tennis and the angular velocity of the trunk. In addition, there is a significant positive correlation between the strength of the backhand stroke and Angular velocity of the arm, as well as there is a significant contribution of strength of stroke and speed of starting in accuracy of backhand stroke in tennis.

Key words: percentage contribution, biomechanical variables, forehand and backhand strokes.