Tråd: Optimizing Fat Oxidation Trough Exercise and Diet

Interessant artikkel om fettforbrenning. Linket til av L*i*s*a* i en tidligere diskusjon. Jeg syntes vi burde ha den i artikkelforumet.

Abstract:

Interventions aimed at increasing fat metabolism could potentially reduce the symptoms of metabolic
diseases such as obesity and type 2 diabetes and may have tremendous clinical relevance. Hence, an
understanding of the factors that increase or decrease fat oxidation is important. Exercise intensity and
duration are important determinants of fat oxidation. Fat oxidation rates increase from low to moderate
intensities and then decrease when the intensity becomes high. Maximal rates of fat oxidation have been
shown to be reached at intensities between 59% and 64% of maximum oxygen consumption in trained
individuals and between 47% and 52% of maximum oxygen consumption in a large sample of the general
population. The mode of exercise can also affect fat oxidation, with fat oxidation being higher during
running than cycling. Endurance training induces a multitude of adaptations that result in increased fat
oxidation. The duration and intensity of exercise training required to induce changes in fat oxidation is
currently unknown. Ingestion of carbohydrate in the hours before or on commencement of exercise
reduces the rate of fat oxidation significantly compared with fasted conditions, whereas fasting longer than
6 h optimizes fat oxidation. Fat oxidation rates have been shown to decrease after ingestion of high-fat
diets, partly as a result of decreased glycogen stores and partly because of adaptations at the muscle level.
Nutrition 2004;20:716 –727. ©Elsevier Inc. 2004

(Hentet fra http://www.unil.ch/webdav/site/issep...oxtraining.pdf)