Dynamics of the coordination abilities development indicators level of 11-15 years old boys

The article discusses the dynamics features of growth rate parameters of integral and total index among 11-15 years old boys coordination abilities in educational institutions during the academic year, which determine sensitive periods boundaries of physical quality formation. In the research were used the following methods: analysis of scientific and methodical literature, pedagogical testing, methods of mathematical statistics. The level of coordination abilities development at the beginning and at the end of the school year is determined by using exercises, selected as a result of the scientific and methodological literature and physical education programs analysis for students in secondary school. Developed scales of testing relative evaluation allowed as described in Y.K. Chernyshenko's methodology to determine integral indexes, which characterize various aspects of coordination abilities, including: individual demonstration of coordination abilities, ability to reproduce, measur ing and differentiating of motion parameters. Total index characterized the overall level of coordination abilities of 11-15 years old teens. The growth rate of the studied features were determined by the unified formula of S.Broudy. As the research result were found arrhythmia peculiarities of different coordination abilities development, which are characterized by the alternation process of positive, negative and indifferent perception of teenagers organism to the targeted pedagogical influences in the context of their motor potential development. They reflect the ultimate stages of presence of the accelerated, decelerated and negative development of a specific coordination quality. Established trends are consistent with the fundamental laws of the evolution of children and adolescents physical age and motor abilities.