Static-Dynamic Posture – the Indicator of the Human Motor Function
Keywords:
physical education, static-dynamic bearing, biomechanics of walking, schoolchildrenAbstract
The article deals with the issue of the state of the junior schoolchildren’s static-dynamic posture in the process of physical exercises practicing. The static-dynamic posture is characterized by the body’s vertical position in equilibrium and change in the dynamic posture, and the body’s position over time. In this case, the human body’s vertical position from the system positions is evaluated as a certain harmony of the interrelated spatial characteristics of the body. As the result of the experiment, we found out that the posture’s infraction could significantly affect the spatial organization of the primary school aged children’s body. For the first time we determined that children with disorders of the body’s spatial organization reduced the velocity of the mass center of the lower extremities and the common center of the body’s mass when performing natural locomotion. The consequence of the reduced speed indicators of the general center of the body’s mass in children with disorders of the body’s spatial organization is an increase in duration of separate phases of a double step walk. The duration of the double step walk of children with functional disorders of the musculoskeletal system increased by an average of 0,3 second. This, of course, affected the tempo-rhythmic step structure – this children’s group was unable to repeat a given metronome tempo walk. They defined that the step length on the right and left legs of children with disorders of the body’s spatial organization on average by 0,56 m, and children with disabilities – 0,45 m, the distance between the toe and heel shock support feet at first is an average of 0,27 m and the second – 0,25 m. The obtained data can be a reference point of the state of schoolchildren’s motor function while organizing the process of physical education. The records of these indicators will contribute to prevention of functional disorders of the musculoskeletal system and improve the locomotor function.
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