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Improvement of early vascular changes and cardiovascular risk factors in obese children after a six-month exercise

Andreas A Meyer1, Günther Kundt, Ute Lenschow

  • 1Division of Pediatric Cardiology, Children's Hospital, University of Rostock, Rostock, Germany. andreas-alexander.meyer@medizin.uni-rostock.de

Journal of the American College of Cardiology
|November 7, 2006
PubMed

Insights

Regular exercise in obese children significantly improves endothelial function and reduces carotid intima-media thickness (IMT). A 6-month program enhanced flow-mediated vasodilation (FMD) and cardiovascular risk factors, combating early atherosclerotic disease.

Area of Science:

  • Pediatric cardiology
  • Exercise physiology
  • Cardiovascular health

Background:

  • Childhood obesity is a precursor to adult obesity and cardiovascular disease.
  • Physical inactivity is a key risk factor for obesity, endothelial dysfunction, and elevated carotid intima-media thickness (IMT).
  • These factors contribute to the early development of atherosclerotic disease.

Purpose of the Study:

  • To evaluate the impact of a 6-month exercise program on flow-mediated vasodilation (FMD), carotid IMT, and cardiovascular risk factors in obese children.
  • To assess the potential of exercise to mitigate cardiovascular risks associated with childhood obesity.

Main Methods:

  • Sixty-seven obese children were randomized into either a 6-month exercise group or a non-exercise control group.
  • Exercise intervention involved 1 hour of activity, 3 times per week.
  • Key cardiovascular parameters including FMD, IMT, and various risk factors were measured.

Main Results:

  • Obese children exhibited significantly impaired FMD and increased IMT compared to lean controls at baseline.
  • The exercise group showed significant improvements in both IMT and FMD after 6 months.
  • Improvements in cardiovascular risk factors, including BMI, body fat, blood pressure, insulin, lipids, and inflammation markers, were observed in the exercise group.

Conclusions:

  • Obese children present with impaired endothelial function (reduced FMD), increased carotid IMT, and elevated cardiovascular risk factors.
  • A 6-month regular exercise program effectively restores endothelial function and improves carotid IMT.
  • Exercise intervention in obese children leads to a significant improvement in their overall cardiovascular risk profile.
Abstract

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