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Understanding the factors that effect maximal fat oxidation

Journal of the International Society of Sports Nutrition, 2018-01, Vol.15 (1), p.3 [Peer Reviewed Journal]

COPYRIGHT 2018 BioMed Central Ltd. ;COPYRIGHT 2018 BioMed Central Ltd. ;2018. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s). 2018 ;ISSN: 1550-2783 ;EISSN: 1550-2783 ;DOI: 10.1186/s12970-018-0207-1 ;PMID: 29344008

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Title:
Understanding the factors that effect maximal fat oxidation
Author: Purdom, Troy ; Kravitz, Len ; Dokladny, Karol ; Mermier, Christine
Subjects: Adipose tissues ; Carbon ; Carnitine ; Catecholamines ; Cholesterol ; cpt-1 ; crossover concept ; Dietary Carbohydrates - metabolism ; Dietary fat ; dietary fat oxidation ; Dietary Fats - metabolism ; Energy ; Exercise ; Exercise - physiology ; Exercise intensity ; fat adaptation ; fat oxidation ; Fatty acids ; Fatty Acids - metabolism ; Gender differences ; Glycerol ; Health aspects ; Humans ; Ketogenic diet ; Lipids ; maximal fat oxidation ; Oxidation ; Oxidation-Reduction ; Oxidation-reduction reaction ; Oxygen Consumption ; pdh activity ; Physiological aspects ; Review ; substrate oxidation ; Women
Is Part Of: Journal of the International Society of Sports Nutrition, 2018-01, Vol.15 (1), p.3
Description: Lipids as a fuel source for energy supply during submaximal exercise originate from subcutaneous adipose tissue derived fatty acids (FA), intramuscular triacylglycerides (IMTG), cholesterol and dietary fat. These sources of fat contribute to fatty acid oxidation (FAox) in various ways. The regulation and utilization of FAs in a maximal capacity occur primarily at exercise intensities between 45 and 65% VO , is known as maximal fat oxidation (MFO), and is measured in g/min. Fatty acid oxidation occurs during submaximal exercise intensities, but is also complimentary to carbohydrate oxidation (CHOox). Due to limitations within FA transport across the cell and mitochondrial membranes, FAox is limited at higher exercise intensities. The point at which FAox reaches maximum and begins to decline is referred to as the crossover point. Exercise intensities that exceed the crossover point (~65% VO ) utilize CHO as the predominant fuel source for energy supply. Training status, exercise intensity, exercise duration, sex differences, and nutrition have all been shown to affect cellular expression responsible for FAox rate. Each stimulus affects the process of FAox differently, resulting in specific adaptions that influence endurance exercise performance. Endurance training, specifically long duration (>2 h) facilitate adaptations that alter both the origin of FAs and FAox rate. Additionally, the influence of sex and nutrition on FAox are discussed. Finally, the role of FAox in the improvement of performance during endurance training is discussed.
Publisher: United States: BioMed Central Ltd
Language: English
Identifier: ISSN: 1550-2783
EISSN: 1550-2783
DOI: 10.1186/s12970-018-0207-1
PMID: 29344008
Source: Directory of Open Access Scholarly Resources (ROAD)
SpringerOpen
PubMed Central (Open access)
Geneva Foundation Free Medical Journals at publisher websites
MEDLINE
ProQuest Central
DOAJ Directory of Open Access Journals

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Understanding the factors that effect maximal fat oxidation

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