Difference between revisions of "Energy Metabolism"
(→Serum Energy) |
(→Serum Energy) |
||
| Line 3: | Line 3: | ||
==Serum Energy== | ==Serum Energy== | ||
[[Image:Serum-Fatty-Acids.jpg|thumb|left|Serum Fatty Acid Reference Ranges relevant to Australia, UK, USA, and other countries where | [[Image:Serum-Fatty-Acids.jpg|thumb|left|Serum Fatty Acid Reference Ranges relevant to Australia, UK, USA, and other countries where | ||
| − | fat intakes are similar to New Zealand[http://images.biomedsearch.com/22254080/nutrients-03-00152.pdf?AWSAccessKeyId=AKIAIBOKHYOLP4MBMRGQ&Expires=1504569600&Signature=u33c2jBfaVBAMGy%2Fb69uqjiMrFE%3D © Bradbury, K.E. et al]]] | + | fat intakes are similar to New Zealand (about 30% of total energy intake) [http://images.biomedsearch.com/22254080/nutrients-03-00152.pdf?AWSAccessKeyId=AKIAIBOKHYOLP4MBMRGQ&Expires=1504569600&Signature=u33c2jBfaVBAMGy%2Fb69uqjiMrFE%3D © Bradbury, K.E. et al]]] |
About 2 to 5% of serum fatty acids are free fatty acids. Serum reference levels for free fatty acids are 0.00-0.72 mmol/L.[http://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/8280] / with a mean value of 7.5 nM (with a standard deviation of 2.5 nM), and a 1.5 nM increase after overnight fasting. [http://www.jlr.org/content/36/2/229.long] | About 2 to 5% of serum fatty acids are free fatty acids. Serum reference levels for free fatty acids are 0.00-0.72 mmol/L.[http://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/8280] / with a mean value of 7.5 nM (with a standard deviation of 2.5 nM), and a 1.5 nM increase after overnight fasting. [http://www.jlr.org/content/36/2/229.long] | ||
Revision as of 18:43, 3 September 2017
The 3 main sources of energy in your body are fatty acids, sugars and protein (disregarding alcohol).
Serum Energy
About 2 to 5% of serum fatty acids are free fatty acids. Serum reference levels for free fatty acids are 0.00-0.72 mmol/L.[1] / with a mean value of 7.5 nM (with a standard deviation of 2.5 nM), and a 1.5 nM increase after overnight fasting. [2]
Fasting
During starvation, utilisation of fatty acids from intracellular lipid droplets is increased, and autophagy mediated.[3]
Exercise
Not just daily exercise increases lipolysis in general [4], but also acute exercise increases lipolysis, specifically in the liver (not in skeletal muscle), accompanied by increased serum levels of free fatty acid, glycerol and ketone body.[5]
Better fitness is not associated with lower dietary fat intakes.[6] Increased physical activity reduces serum triglyceride levels.[7] At similar levels mean VO2, tennis match play relies more on glycolysis and glycogenolysis compared to continuous running exercise.[8]
