Diet, exercise, and endothelial function in obese adolescents

Area of Science:

• Cardiovascular Health
• Adolescent Medicine
• Metabolic Syndrome

Background:

• Obesity in adolescents is linked to endothelial dysfunction, an early sign of atherosclerosis.
• Microvascular function is impaired in obese youth, highlighting a critical area for intervention.
• Early intervention is key as endothelial dysfunction is reversible.

Purpose of the Study:

• To assess the impact of a multicomponent treatment on microvascular function in obese adolescents.
• To evaluate changes in BMI standard deviation score, body composition, and exercise capacity.
• To investigate effects on cardiovascular risk factors, endothelial progenitor cells (EPCs), and endothelial microparticles (EMPs).

Main Methods:

• A quasi-randomized study comparing a residential intervention (diet and exercise) with usual care.
• Inclusion of 61 obese adolescents (33 intervention, 28 usual care) over a 10-month period.
• Evaluation of microvascular function, body composition, fitness, EPCs, and EMPs at 5 and 10 months.

Main Results:

• The intervention group showed significant improvements in BMI, body fat percentage, and exercise capacity.
• Microvascular endothelial function improved significantly in the intervention group by 10 months.
• Reductions in high-sensitivity C-reactive protein, increases in EPCs, and decreases in EMPs were observed.

Conclusions:

• A supervised residential diet and exercise program effectively improved multiple obesity-related outcomes in adolescents.
• The findings support the efficacy of comprehensive lifestyle interventions for adolescent obesity and associated vascular risks.
• This treatment approach offers a promising strategy for mitigating long-term cardiovascular disease risk in obese youth.