Bicycle Exercise and Lifestyle Intervention in Newly Diagnosed Diabetes

Inclusion Criteria: * Informed consent as documented by signature * Type 2 diabetes diagnosed within the last two years according to the American Diabetes Association (ADA) criteria * Age ≥ 18 years * HbA1c ≥ 7.5 % Exclusion Criteria: * Clinically instable patient as defined by the physicians on duty including signs of new cardiac ischemia in the ECG, systolic blood pressure ≥ 200 mmHg, fever ≥ 38.5 °C, symptoms of SIRS or reduced vigilance. * Anti-diabetic medication for ≥ 24 hours * Inability to perform a bicycle exercise during 30 minutes * Previous lifestyle-intervention by an endocrinologist * Engagement in physical activity more than five times per week * Enrollment in other interventional study