Effect of Feeding Frequency on Glucose and Insulin Metabolism and Substrate Partitioning in Impaired Glucose Tolerant (IGT) Men

Inclusion Criteria: * BMI: 20-35 kg/m2 * Gender: Male * Age: subjects has to be older than 18 and younger than 70 years old * Impaired Glucose Tolerant (IGT) = plasma glucose, two hours after consuming 75g glucose, appears to be superior to 7.8mmol/l (normal level) but remains inferior to 11.1mmol/l (diabetes level) and fasting plasma glucose is less than 7.0mmol/l. * Caucasian Exclusion Criteria: 1. Lactose intolerant 2. Diabetes Mellitus 3. Cardiovascular diseases 4. Stomach and intestinal diseases 5. Normal glucose levels after 2 hours 6. Anticoagulants 7. Medication that has a effect on energy and glucose homeostasis and absorption of foods 8. Conditions or situations when subjects can't lose 500 ml blood