Obesity Clinical Trial
Official title:
Copenhagen Study of Obese Patients With Ischemic Heart Disease Undergoing Low Energy Diet or Interval Training: A Randomized Clinical Trial
The purpose of the study is to make a head-to-head comparison of weight loss and interval training as methods of secondary prevention in overweight patients with ischemic heart disease.
In western countries 80 % of patients with ischemic heart disease (IHD) are overweight (BMI
> 25). Weight loss using a low energy diet (LED, 800 - 1000 kcal/day) has been shown to
induce a considerable weight loss in obese but otherwise healthy patients and to reduce the
risk of cardiovascular disease and diabetes in these subjects. Additionally, a British study
using a very low energy diet (VLED, 600 kcal/day) to obtain weight loss, has shown that
subject with diagnosed type 2 diabetes had their blood glucose normalized after an 8 week
VLED. However, the effect of LED has never been examined in overweight patients with IHD.
Several studies have shown that patients with IHD have a beneficial effect of exercise
training regarding mortality and reduction in cardiovascular risk factors. A Norwegian group
has shown that aerobic interval training results in the biggest increase in maximal oxygen
uptake (VO2max). A high VO2max is correlated to decreased mortality in patients with IHD.
In conclusion, weight loss and exercise are known strategies in preventing progression of
IHD and development of type 2 diabetes in these patients, however a head-to-head comparison
of the two methods has never been made and it is unknown which intervention is the most
effective in improving cardiovascular risk profile. Furthermore, several mechanisms behind
the known beneficial effect of these interventions are unknown.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Prevention
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