FUNCTIONAL AND DYNAMIC ASYMMETRY IN HEARING – IMPAIRED GIRLS AND BOYS
Journal Title: Medycyna Sportowa - Year 2011, Vol 27, Issue 4
Abstract
[b]Background. [/b]One aspect of motor activity is the process of lateralization. This process occurs in the whole body and leads to lateralization or, in other words, asymmetry. Lateralization is a regularity of human development and a prerequisite for effective activities in the environment. A specific study group for the evaluation of body lateralization are patients with hearing organ dysfunction. Hearing plays a very important role in the course of motor development. [brakowało tłumaczenia] The objective of the present investigation is to identify and compare the level of dynamic and functional asymmetry as in hearing-impaired girls and boys. The practical objective is to acquire and popularize knowledge on the investigated issues. [b]Material and methods.[/b] The research was carried out among children of 4th to 6th grade at primary school from three centres for the hearing-impaired children in Poland. Sixty subjects have undergone tests. The test for functional asymmetry direction and dynamic asymmetry size developed in Wrocław by Koszczyc and Sekita was used for measuring asymmetry. [b]Results.[/b] In the group of the hearing-impaired girls as well as boys the predominating direction in terms of handedness was the right direction, as regards eyedness the prevailing direction was left in girls and right direction in the group of boys, respectively, whereas in terms of footedness in both investigated groups an undetermined direction predominated. In the examined groups the unspecified profile of functional asymmetry prevailed. Both tested groups showed significant dynamic asymmetry in terms of the speed of upper and lower limbs and upper limb strength. [b]Conclusions.[/b] Among the hearing–impaired children it is necessary to stimulate lateralization, the high level of which is a prerequisite for effective activities in their environment. It seems quite a noteworthy idea to compare the obtained results to the analogous results obtained among the hearing peers of the subjects.
Authors and Affiliations
Marta Wieczorek
Keywords
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