Chronic inflammatory activation in fat tissue can be the link between adiposity and an increased risk for atherosclerosis. Aim of the study is to investigate how molecular alterations in fat tissue can be influenced by regular physical exercise training alone or in combination with a medical therapy (Glitazon or Metformin) in obese patients with stable CAD and impaired glucose tolerance.

Inclusion Criteria:

• either impaired glucose tolerance (2-h plasma glucose concentration >7.8 and <11.1 mmol/L during an oral glucose tolerance test) or impaired fasting glucose (fasting glucose concentration >6.0 and <7.0 mmol/L)
• coronary artery disease determined by coronary angiography
• BMI > 25
• male patients aged 35-75 years

Exclusion Criteria:

• diabetes mellitus type 1
• diabetes mellitus type 2 in combination with glycosylates hemoglobin >6.0%, previous medication with oral antidiabetic agents or insulin, fasting plasma glucose concentration > 11.0 mmol/L
• unstable angina pectoris
• indication for coronary artery bypass graft operation
• myocardial infarction within the last 3 months
• reduced left-ventricular systolic function < 40 %