Total daily energy expenditure and macronutrient adequacy across biological maturation stages and playing positions in adolescent footballers

Background: In adolescent footballers, physical growth and biological maturation occur concurrently with sports-related training loads. Consequently, players of the same chronological age may differ in resting energy expenditure, exercise-related energy costs and macronutrient requirements. In the present study, biological maturation and playing position were analysed as interrelated determinants of energy requirements.