Consensus statement

Systematic physical activity is a neces-sary element of normal development of a young human body.1 2 From early child-hood, people should participate in sports and recreational activities involving move-ment. However, organised and systematic learning of a given form of motor activity (physical training), particularly participa-tion in sport competitions, may result in development of certain abnormalities con-nected with excessive physical and mental load of a young body, including injuries.3–6 In recent years, athletes begin specialised training for their sport at increasingl