MORPHOLOGICAL AND FUNCTIONAL ASYMMETRY OF THE UPPER LIMBS IN TABLE TENNIS PLAYERS
Journal Title: Medycyna Sportowa - Year 2015, Vol 31, Issue 2
Abstract
[b]Background. [/b]Table tennis belongs to asymmetric sport disciplines. The aim of the study was an assessment of morphological and functional differentiation of selected features of the dominant and the non-dominant upper limb in advanced table tennis players.[b]Material and methods.[/b] The sample comprised 24 table tennis competitors aged 19 -38 years, involved in professional sport practice in Drzonków Sports Club. Length parameters, circumferences and the ranges of motion in the upper limbs were measured. It was determined which arm was the dominant one (used to strike the ball) in each player. The material was statistically analyzed.[b]Results. [/b]All the measured length parameters of the upper limb and its parts (the upper arm, the forearm and the hand) as well as arm and forearm circumferences, reflecting muscle mass, turned out to be higher on the dominant side. The values of the ranges of movements, except wrist abduction by elbow extension, were also better in the dominant arm. All the calculated differences turned out to be statistically significant. The values of the coefficient of variation indicated high uniformity of the competitors’ group in terms of all the studied features.[b]Conclusions.[/b] The upper limb asymmetry found in table tennis players requires inclusion of symmetric exercise, shaping equally both sides during training. Such exercises will reduce morphological and functional differentiation between upper limbs and the probability of pain which is difficult to diagnose. They will also contribute to the delay of pathological changes development due to overload.
Authors and Affiliations
Michał Łojko, Andrzej Zaleski
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