title: [Concept of optimal body composition of professional football players].
abstract: Body composition and body weight are two of the many factors that contribute to optimal exercise performance. Body weight can influence an athlete's speed, endurance, and power, whereas body composition can affect an athlete's strength, agility, and appearance. Individualized assessment of an athlete's body composition and body weight or body image may be advantageous for the improvement of athletic performance. The purpose of the present research consists in development of physiologically proved modelling characteristic of high performance football players on the basis of the analysis of dynamics (changes) of the major parameters of structure of weight of football players of various ages in process of acquiring game experience and skill. 344 football players from 15 to 35 years old were surveyed. The basic parameters of body composition were determined. It was found that general tendency in dynamics of the basic components of structure of body composition at the end of playing season is expressed in appreciable gain of active cellular weight as analogue of the muscular mass, decrease in the absolute fat contents, increase in endocellular liquid and eritrocyte mass. Comparison of changeable parameters to external criteria of success in competition and tested productivity, adaptive reactions and stability of motivation led to the conclusion that quantitative sports-skill evaluation and forecast of the growth in achievements is possible.
authors.forename: S
authors.initials: S
authors.lastname: Grigoryan
mesh_terms: D000328:Adult; D000886:Anthropometry / Q000379:methods*; D056352:Athletes; D054874:Athletic Performance / Q000502:physiology*; D001837:Body Weights and Measures; D015444:Exercise / Q000502:physiology; D006801:Humans; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology; D010807:Physical Endurance / Q000502:physiology; D010809:Physical Fitness / Q000502:physiology; D012916:Soccer / Q000502:physiology*; D055815:Young Adult