Principal component analysis in the study of the structure of decathlon at different stages of sports career - Dziadek, B.; Iskra, J.; Mendyka, W.; Przednowek, K. (Polish Journal of Sport and Tourism, 2022)
Keywords: multiple event; track and field; high performance sport; analysis; mathematic-logical model; performance development; athlete; 1985; 2018; age; relation; competition; sports facility; statistics; relative age effect; Poland; biological and medical sciences