PMID- 22301835 OWN - NLM STAT- MEDLINE DCOM- 20120529 LR - 20160523 IS - 1664-2155 (Electronic) IS - 1664-2147 (Linking) VI - 69 DP - 2011 TI - Metabolic regulation of fat use during exercise and in recovery. PG - 39-53; discussion 53-8 LID - 10.1159/000329281 [doi] AB - Fat is an important fuel for exercise but plays a secondary role to carbohydrate (CHO). Increasing fat use during exercise can decrease the reliance on CHO and spare CHO for later in training sessions or competitions that depend on CHO for success. The pathways that metabolize and oxidize fat are activated more slowly than CHO at the onset of exercise and reach a maximum at moderate exercise intensities. As exercise intensity increases to approximately 75% VO(2max) and beyond, fat metabolism is inhibited: using CHO will increase the amount of energy produced per liter of oxygen consumed. The capacity for fat use during exercise is increased by aerobic training and the dietary combination of little or no CHO intake and high fat intake. Fat oxidation is very dependent on the mitochondrial volume of muscle but other key sites of regulation include release of fat from storage forms and fat transport across plasma and mitochondrial membranes. This chapter examines the control of fat metabolism during moderate and intense exercise with an emphasis on human findings and the adaptations that occur with aerobic training and other acute nutritional manipulations. Recent work using molecular and cellular compartmentalization techniques have advanced the knowledge in this area. CI - Copyright (c) 2011 S. Karger AG, Basel. FAU - Spriet, Lawrence L AU - Spriet LL AD - Department of Human Health and Nutritional Science, University of Guelph, Guelph, ON, Canada. LA - eng PT - Journal Article DEP - 20120118 PL - Switzerland TA - Nestle Nutr Inst Workshop Ser JT - Nestle Nutrition Institute workshop series JID - 101577268 RN - 0 (Dietary Carbohydrates) RN - 0 (Dietary Fats) SB - IM MH - *Adaptation, Physiological MH - Diet MH - Dietary Carbohydrates/administration & dosage/metabolism MH - Dietary Fats/*administration & dosage/metabolism MH - Energy Metabolism/*physiology MH - Exercise/*physiology MH - Humans MH - *Lipid Metabolism MH - Muscle, Skeletal/metabolism MH - Oxidation-Reduction MH - Oxygen Consumption/physiology EDAT- 2012/02/04 06:00 MHDA- 2012/05/30 06:00 CRDT- 2012/02/04 06:00 PHST- 2012/02/04 06:00 [entrez] PHST- 2012/02/04 06:00 [pubmed] PHST- 2012/05/30 06:00 [medline] AID - 329279 [pii] AID - 10.1159/000329281 [doi] PST - ppublish SO - Nestle Nutr Inst Workshop Ser. 2011;69:39-53; discussion 53-8. doi: 10.1159/000329281. Epub 2012 Jan 18.