Dmytriv R. Age changes of body composition and muscular force development of schoolboys which live in different social and natural conditions

Dissertation is dedicated to studding physical development, component body composition and muscular force development of schoolboys 7-16 years old, which live in different social and natural conditions. Sainted results of inspected children of Precarpatian region allow to state that the most absolute indexes are very high in senior schoolboys. The indexes are lower in town children. The lowest indexes are observed in most plain village children. When comparing Ivano-Frankivsk young and senior boys with boys of other Ukrainian towns we state that body mass and body length of Precarpatian boys are higher than ones of children of other Ukrainian regions but outlining indexes are lower than the medium level. The correlation of the main body components (muscular, osseous and adipose) changes according to the age and is determining concerning sensitive periods of power ability development of schoolboys (it was proved during the investigation). Besides the idea of somatic and physiometric characteristics of children 7-16 years old widen and allows to realize the program of using children differential physical education facilities. These ideas can be used to harmonize children physical education and to serve as the base for adequate dozing of physical loading directed to develop such the physical quality as power.