Relationship Between Isokinetic Strength Parameters and Soccer Throw-in Performance

Friday, April 1, 2011
Exhibit Hall Poster Area 1 (Convention Center)
Ali Onur Cerrah, Elvin Onarici Gungor and Ilker Yilmaz, Anadolu University, Eskisehir, Turkey

Background/Purpose The aim of the current study was to determine ball velocity and throwing distance in standing and running throw-in techniques, and to correlate this performances with isokinetic torques of the, elbow, shoulder, and trunk extensors and flexors.

Method 14 male amateur soccer players (age:22,93±2,27year, training status:11,64±4,16year), volunteered to participate the current study. Isokinetic (consantric/consantric) tests were measured at 60 and 180°s-1 angular velocities for elbow and shoulder, 30 and 120°s-1 angular velocities for trunk. Ball velocities were analyzed by radar gun and the throwing distance was measured regarding throw-in performance.

Analysis/Results Unpaired t-test was used to analyze ball velocity and throwing distance differences between two different throwing techniques. To clarify relationship between isokinetic strength values and ball velocities and distance which occur during two types of throwing techniques Pearson Correlation Analyze was used.

There were no statistical significant differences regarding throwing velocity and distance between two different throw-in techniques. Even though, the isokinetic values and throwing velocities did not correlate with each other, there was a positive correlation between standing throw-in distance with elbow (non–dominant flexion in 60 and 180°s-1), shoulder (dominant flexion-extension in 60 and 180°s-1, non-dominant extension in 60 and 180°s-1) and trunk (flexion in 30 and 120°s-1). The only correlation between running throw-in and throwing distance occurred in shoulder (dominant extension in 60°s-1) and trunk (flexion in 30°s-1).

Conclusions In conclusion, the isokinetic strength values regarding upper extremity is strong factor that describes standing throw-in performance. However; it is not highly correlated with the running throw-in performance in soccer.