Fettbruk
Fettbruk is the use of fat as an energy source in human metabolism. It describes how the body oxidizes fatty acids derived from dietary fats, adipose tissue stores and intramuscular triglycerides to generate ATP. Fat oxidation occurs alongside carbohydrate oxidation and becomes more prominent during lower‑intensity exercise, longer duration activity, fasting or caloric restriction.
The metabolic pathway starts with lipolysis in adipose tissue, releasing free fatty acids and glycerol. Free
Fettbruk is regulated by energy demand, training status and diet. Hormones play a key role: insulin inhibits
Applications and relevance include endurance performance optimization, weight management and metabolic health. Fettbruk varies between individuals