Daily fat consumption makes a significant contribution in meeting these energy needs. Maintaining energy balance means being weight-stable. In general, weight loss is not desirable during an athlete's competitive season. Cross Country Skiing Prolonged continuous, moderate to intense activity that places high demands on aerobic metabolism. Endurance training enhances fat oxidation via metabolic adaptations that increase the number and size of mitochondria and oxidative enzymes in muscle cells.
Endurance training promotes the use of intramuscular triglycerides as fuel substrates for exercise.
Increased fat oxidation as a result of endurance training is associated with decreased muscle glycogen use and improved endurance performance. Because improvements in fat oxidation during aerobic exercise are due to adaptations to endurance training, dietary fat supplementation and special high fat diets appear to have limited ability to enhance fat oxidation during moderate to high intensity exercise. Daily fat consumption makes a significant contribution in meeting these energy needs. Maintaining energy balance means being weight-stable. In general, weight loss is not desirable during an athlete's competitive season.