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:


(Date:2/2/2016)... RESTON, Va. , Feb. 2, 2016 /PRNewswire/ ... contract award from the U.S. Army Research Office ... extend the range and sensitivity of the company,s ... DoD,s Past Accounting Mission and, more generally, defense-related ... its DNA phenotyping capabilities (predicting appearance and ancestry ...
(Date:1/28/2016)... SAN JOSE, Calif., Jan. 28, 2016 Synaptics (NASDAQ: ... financial results for its second quarter ended December 31, 2015. ... the second quarter of fiscal 2016 increased 2 percent compared to ... the second quarter of fiscal 2016 was $35.0 million, or $0.93 ... Non-GAAP net income for the first quarter of fiscal 2016 ...
(Date:1/22/2016)... http://www.researchandmarkets.com/research/p74whf/global_biometrics ) ... "Global Biometrics Market in Retail Sector 2016-2020" ... --> http://www.researchandmarkets.com/research/p74whf/global_biometrics ) has announced the ... in Retail Sector 2016-2020" report to ... and Markets ( http://www.researchandmarkets.com/research/p74whf/global_biometrics ) has announced ...
Breaking Biology News(10 mins):
(Date:2/8/2016)...  BioElectronics Corporation (OTC Pink: BIEL), the maker ... it is responding to a notice of an ... Exchange Commission posted on the agency website.  ... Board of BioElectronics Corporation and the Edward and ... Fuqua School of Business, Duke University.   ...
(Date:2/8/2016)... , Feb. 8, 2016  NanoViricides, Inc. (NYSE MKT: NNVC) ... CEO, Eugene Seymour , MD, MPH, will present information about ... the Waldorf-Astoria Hotel in New York City . ... be in the Windsor Room at 5:30PM EST. Registered attendees can ... New York City . --> ...
(Date:2/6/2016)... ... , ... The Center for Excellence in Education (CEE) will sponsor a Bite ... February 10, 2016. This Bite of Science session, hosted by the Smithsonian-Mason School ... Remount Road in Front Royal, VA from 5:00 p.m. to 8:00 p.m. The dinner ...
(Date:2/5/2016)... On Thursday, February 11, 2-1-1 San ... health and disaster services, and the Community Information ... care coordination and service delivery for the community to ... to better connect service providers to the information they ... Diego has handled more than 2.5 million ...
Breaking Biology Technology:
Cached News: