Conceptual Scheme of Motor Asymmetry Control in Aerobic Cyclic Sports

In this article, based on well-known literary data, the motor asymmetry of a person in the training process of aerobic cyclic sports is considered. The authors have analyzed the features of manifestation and consequences of the formation of motor asymmetry, and assessed its impact on sports performance. Motor asymmetry has been found to be based on the genetic characteristics of the organism, but the lateral phenotype may change during a multi-year training process under the influence of physical exertion. Excessive asymmetry has been shown to cause various pathologies and injuries. The results of the study indicate that in aerobic cyclic sports motor asymmetry can be both a factor contributing to the growth of sports performance and a limiting one, depending on what function this or that part of the body performs. Despite the repetitive cycle of motor actions, typical for cyclic sports, only in 3 out of the 8 considered functions performed by limbs or a certain part of the body, motor asymmetry was a limiting factor. This allowed the authors to predict a possible conceptual scheme of motor asymmetry control in aerobic cyclic sports

Handedness: Manual Lateral Parameter – or the Result of the Researcher’s Manipulation

The purpose of the research was to compare different methods of handedness assessment. Participants included 161 children between 4 and 7 years of age: 87 girls and 74 boys. The research incorporated typical methods used in investigations and assessment of lateral phenotype. All tests were repeated at least three times to assess their reliability in assessing children. Our findings reveal that different sets of assessments and scoring methods produced different results in determination of right- or left-handedness. Factor analysis identified three significant factors of handedness: social pressure, genetic mechanisms, and two-hand coordination. We conclude that it is necessary for assessment of handedness to use at least three testsassociated with each of these factors. Keywords: handedness, left-handedness, methods, lateral profile, children.

Features of the emotional status of schoolchildren with different profiles of lateral phenotype

Background: Success of school education depends on many factors, including the most important mental function of a child, namely the type of hemispheric asymmetry of the brain that determines the characteristics of perception, memory, thinking strategy and the emotional sphere. Accounting the patterns of mental functions of a child constitutes the basis for the individualization of learning processes with the focus on maintaining the health of children and adolescents. The type of the hemispheric asymmetry is determined by the lateral phenotype of the subject, which is the set of peripheral motorsensory asymmetries.Aim of the study: To evaluate emotional and personal characteristics of pupils with different lateral phenotypes.Material and methods: 227 schoolchildren (caucasians) aged 7-15 years living in the city of Krasnoyarsk. The pupils were recognized clinically as healthy and they achieved the average physical and sexual development. Their lateral phenotype was assessed by the psychomotor tests for the guiding hand, the leading leg, eye and ear. The study aimed to explore the emotional personality traits, using child personality questionnaire G.U. Eysenck adapted to the childhood age and to estimate the level of intra - extraversion and neuroticisms in points.Results: Among schoolchildren of Krasnoyarsk city, there were numerous groups of children with right lateral and mixed phenotypes in combination with extroverted personality type and emotional stability. Among the children with left lateral and symmetric phenotypes almost half of the subjects recorded introverted personality type combined with high levels of neuroticism.Conclusions: the components of a child’s personality such as introverted personality type combined with high levels of neuroticism reduce the body’s adaptive capabilities of children and dictate the need for psycho-pedagogical correction. The results of the research can be used in psychology, age physiology and pedagogic.