HOME >> BIOLOGY >> NEWS
Burning fat and carbohydrate during exercise

In a paper published in The Journal of Physiology, Helge, Stallknecht, Richter, Galbo, and Keins from Copenhagen shed light on fat oxidation during exercise and physical activity. Their observations suggest that fat oxidation during exercise reflects a fine interplay between the cardiovascular, neurological, endocrine and muscle metabolic systems.

During exercise and physical activity, the primary fuels used by muscles are carbohydrate and fat. When mild exercise is performed there is a tendency to burn relatively more fat and less glucose, but as exercise becomes more intense, a higher fraction of the energy demands of the muscle are supplied by glucose, until at the highest intensities almost only carbohydrates are used. Is this shift in fuel source a property of the muscle itself, or does it represent the interplay between what is happening in the muscle and the exercise-related responses in the rest of the body"

The study, performed at the Copenhagen Muscle Research Centre at the University of Copenhagen, examined muscle fuel utilisation in response to graded exercise performed with only one leg. Nine healthy males performed one-leg exercise at 25, 45, and 85% of maximal workload. Their results showed that, when only a small mass of muscle is contracting, and blood flow and oxygen supply are not limited by central circulatory capacity, the shift in fuel source from fat to glucose as exercise intensity increases does not occur.

Helge et al.s findings show that the adaptations in the rest of the body are the key to this fuel source shift during whole body exercise. They also help scientists understand why athletes "hit the wall" during events like the marathon, and they have implications for the adaptations made in middle-aged adults who are using exercise to prevent or treat conditions like diabetes and obesity. If the mechanisms can be fully understood, it may be possible to develop agents that allow fat oxidation to be maint
'"/>

Contact: Melanie Thomson
melanie.thomson@oxon.blackwellpublishing.com
44-186-547-6270
Blackwell Publishing Ltd.
18-Jun-2007


Page: 1 2

Related biology news :

1. Burning wetlands unleash sequestered mercury in wake of climate change
2. UGA researchers discover cell-wall carbohydrate that is crucial to anthrax bacterium
3. Disabling a carbohydrate trigger reduces obesity and appetite
4. Loss of central vision with age may be linked to quality of dietary carbohydrates
5. Reduced calorie and carbohydrate diet slows progression of Alzheimers disease in mouse model
6. Regulating alternative splicing during neural development
7. Slow wave activity during sleep is lower in African-Americans than Caucasians
8. Its safe for obese moms-to-be to lose weight during pregnancy, new SLU research finds
9. Alcohol use during pregnancy leads to greater risk of extreme preterm delivery
10. Migraines during pregnancy linked to stroke and other vascular diseases
11. Carnegie Mellon University scientists identify genes activated during learning and memory

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Burning fat and carbohydrate during exercise

(Date:10/28/2014)... Individual differences in moving activity in a novel ... to angling, according to an experimental study completed ... Finnish Game and Fisheries Research Institute. The study ... groups and authentic angling trials to analyse if ... trout reared in traditional and enriched hatchery rearing ...
(Date:10/27/2014)... a scientific one-two punch with a pair of papers ... sticky ends. , Collagen is the most common protein ... fibrous tissues that support cells and hold organs together. ... for tissue engineering and cosmetic and reconstructive medicine. , ... synthetic collagen for a decade, teasing out the details ...
(Date:10/27/2014)... day, about a third of blacks hold onto sodium ... an hour after the stress that raised their pressure ... know how chronic mental stress, obesity, and inflammation conspire ... the best ways to treat it. , "We ... – these patients have increased damage to their hearts, ...
Breaking Biology News(10 mins):Fish 'personality' linked to vulnerability to angling 2'Sticky' ends start synthetic collagen growth 2'Sticky' ends start synthetic collagen growth 3Researchers look for the best way to help shake too much sodium 2Researchers look for the best way to help shake too much sodium 3Researchers look for the best way to help shake too much sodium 4
(Date:10/27/2014)... 27, 2014 Pressure BioSciences, Inc. (OTCQB: ... in the development and sale of high pressure-based ... market, today announced that Professor Ruedi Aebersold ... highly reproducible, and robust method to allow – ... analysis on small needle biopsy samples by mass ...
(Date:10/27/2014)... 27, 2014 Investor-Edge has initiated ... NBIX ), Insmed Inc. (NASDAQ: ... ), Dyax Corporation (NASDAQ: DYAX ), and ... companies can be accessed at: http://investor-edge.com/register . ... ended at 4,483.72, up 0.69%, the Dow Jones Industrial ...
(Date:10/26/2014)... The report "Protective Coatings Market by Resin Type, ... Forecast to 2019", defines and segments the global protective ... and value generated. The protective coatings consumption is projected ... KT by 2019, at a CAGR of 9.52% during ... and 22 figures spread through 219 slides and in-depth ...
(Date:10/25/2014)... California (PRWEB) October 23, 2014 ... a specialty pharmaceutical company devoted to bringing new ... partnerships in 2015. , ViaDerma has developed an ... allows for rapid mass transfer of pharmaceutical active ... body to provide immediate localized therapy. The transdermal ...
Breaking Biology Technology:Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 2Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 3Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 4Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 5Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 2Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 3Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 4Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 5Protective Coatings Market Poised to Reach $18,431.8 Million by 2019 - Report by MarketsandMarkets 2Protective Coatings Market Poised to Reach $18,431.8 Million by 2019 - Report by MarketsandMarkets 3Protective Coatings Market Poised to Reach $18,431.8 Million by 2019 - Report by MarketsandMarkets 4ViaDerma, Inc. Announces Plans to Pursue Out-Licensing Partnerships in 2015 2ViaDerma, Inc. Announces Plans to Pursue Out-Licensing Partnerships in 2015 3
Cached News: