Result determinants in children’s and teenagers’ fly-throws in terms of dynamic asymmetry
Journal Title: Antropomotoryka. Journal of Kinesiology and Exercise Sciences - Year 2013, Vol 23, Issue 64
Abstract
Aim of the study. The aim of this study was to try to describe factors which support the improvement in teaching fly-throws and determine better results, including the proper use of the non-dominant hand. Chosen factors come from the group of basic fly-throw equipment (javelin and tennis ball), and with the use of the substitute equipment (elliptic Vortex ball throw). The results of the fitness tests and somatic build parameters were also included in the analysis.Material and methods. A group of 155 pupils, in two age groups, adequate to particular educational levels, were selected for the purpose of this study (primary school – age 11–12 and high school – age 17–8). Also, the gender was taken into consideration. The data was prepared in terms of statistics, determining basic indexes, and correlation as well as regression analyses were applied. In order to create regression models, multiple regression was used, while significant differences were described with the aid of ANOVA analysis.Results. In many cases, there was high correlation (p 0,05) between right and left hand throws using various equipment. The data shows that the most common explanatory variables providing results in the flythrows were variables from the elliptic Vortex ball throw group, while fitness tests and somatic build parameters occasionally created the regression models. The variables from the non-dominant hand throw group also appeared in the regression models. The coefficient of determination in the created regression models slightly increased with the age, while the number of explanatory variables was similar (R^2 = 0.471 in the younger group, to R^2 = 0.733 in the older group).Conclusions. Somatic build parameters and motility in shoulder joints do not determine the results of flythrows in both groups. The use of substitute equipment can be applied in teaching processes and improving throws.
Authors and Affiliations
Mariusz Konieczny, Janusz Iskra
Keywords
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