The goal of this clinical trial is to learn how exercise and diet quality affect the health of adolescents with obesity. The main questions it aims to answer are:
* Does exercise improve cardiometabolic health in adolescents with obesity? * Does enriching the diet with fruits and vegetables improve cardiometabolic health in adolescents with obesity? * Do exercise and a fruit and vegetable diet together provide greater health benefits than either one alone in adolescents with obesity?
Researchers will compare four groups to see how exercise and diet impact health:
* Standard Care Group: Receives the usual care for obesity. * Exercise Group: Receives weekly exercise coaching and participates in a 12-week exercise program. * Diet Group: Receives weekly dietary coaching and eats a diet enriched with fruits and vegetables for 12 weeks. * Combined Exercise and Diet Group: Receives both exercise and dietary programs, namely weekly exercise and dietary coaching, participation in a 12-week exercise program, and daily consumption of fruits and vegetables for 12 weeks.
During the 12-week study, participants will attend three study visits to:
* Provide blood, stool, and urine samples. * Answer questions about health, sleep, diet, and physical activity. * Undergo body scans to measure fat, lean, and bone mass. * Complete blood vessel function and liver fat content assessments. * Assess resting exergy expenditure. * Complete fitness tests. * Wear a fitness tracker to monitor physical activity and sleep patterns.
Male or female aged 13 to 17 years.
Newly enrolled in a weight management program.
Excessive weight: Class I obesity I (≥95% percentile to < 120% of the 95th percentile), class II Obesity (≥120 to <140% of the 95th percentile, or BMI ≥35 to < 40 g/m2).
Less than 60 min/day of moderate to vigorous physical activity.
Type 2 diabetes mellitus.
Asthma that requires daily use of inhalers to keep symptoms under control.
Asthma that requires the use of rescue inhalers (e.g., albuterol) >2 days per week
Exercise-induced asthma.