THE EFFECT OF INTERVAL TRAINING METHODS ON THE ADOLESCENT BODY IN THE DEVELOPMENT OF ENDURANCE
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This article examines the effects of interval training methodology (HIIT and SIT) on enhancing endurance in adolescents (aged 12–17). A total of 180 adolescents were divided into four groups: HIIT (n=45), SIT (n=45), continuous aerobic (n=45), and control (n=45). Following a 16-week program, HIIT increased general endurance by 32%, SIT improved anaerobic power by 42%; VO2max rose by 29% in HIIT and 18% in SIT. Lactate threshold and mitochondrial density increased. Methodology: Cooper test, Wingate, VO2max, blood lactate, muscle biopsy. Interval training is more effective than traditional methods, but intensity control is essential. The study supports integrating HIIT into school physical education programs.
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