THE EFFECTS OF HIGH-INTENSITY INTERVAL TRAINING (HIIT) ON YOUTH FITNESS IN EUROPEAN SCHOOLS
Keywords:
High-Intensity Interval Training, Youth Fitness, Cardiovascular Health, Physical Education, Europe, School-Based Exercise.Abstract
High-Intensity Interval Training (HIIT) has gained popularity as an effective method to improve cardiovascular fitness, muscular endurance, and overall health in youth populations. This study examines the impact of an 8-week HIIT program on physical fitness among students aged 12–16 in Austria, Sweden, and Spain. Data were collected from 360 students across 12 schools in each country. Fitness indicators included VO2 max, body mass index (BMI), and endurance test scores. Results show significant improvements in cardiovascular capacity and endurance, with modest reductions in BMI. The study highlights the potential of integrating structured HIIT programs into school curricula to enhance student health and fitness outcomes.
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