Fat stored in muscle. Fatty acids and glycerol carried to the muscle by the bloodstream are either metabolized (mainly to release its energy), or recombined to make triglycerides, which are stored. Each triglyceride molecule consists of glycerol bound to three fatty acid chains. Recent evidence shows that muscle triglycerides are an important source of energy during prolonged endurance activities, sparing muscle glycogen. Regular aerobic exercise increases the stores of muscle triglycerides.
Subjects: Medicine and Health.