Navigation Links
Exercise counters the physiological effects of Christmas excess
Date:12/14/2013

Daily exercise lessens many of the harmful physiological effects of short-term overeating and inactivity, shows a new study [published 15 December] in The Journal of Physiology, which is well timed with the Christmas holiday approaching.

Earlier studies have found that even a few days of energy surplus where you consume more calories than you burn brings detrimental health impacts. This new study shows that a daily bout of exercise generates vast physiological benefits even when you consume thousands of calories more than you are burning. Exercise clearly does a lot more than simply reduce the energy surplus.

James Betts, one of the researchers from The University of Bath, says: "This new research shows that the picture is more sophisticated than 'energy' alone: exercise has positive effects even when we are actively storing energy and gaining weight."

After just one week of overeating, people being monitored showed poor blood sugar control and their fat cells were expressing genes that lead to unhealthy metabolic changes and disrupted nutritional balance. However, these negative effects were markedly less in those who were exercising.

Jean-Philippe Walhin, a researcher on the study, says: "Our research demonstrates that a short period of overconsumption and reduced physical activity leads to very profound negative changes in a variety of physiological systems but that a daily bout of exercise stops most of these negative changes from taking place."

In the study, 26 healthy young men were asked to be generally inactive in their daily activities. Half of the group then exercised daily on a treadmill for 45 minutes. Everyone was asked to overeat: the non-exercising group increased their caloric intake by 50 per cent, whilst the exercising group increased by 75 per cent, so everyone's net daily energy surplus was the same.

Dr Dylan Thompson, senior author on the paper, says: "A critical feature of our experiment is that we matched the energy surplus between groups so the exercise group consumed even more energy and were still better off at the end of the week."

After one week, the groups had blood insulin measurements and biopsies of fat tissue taken, with striking results. The non-exercising group showed a significant and unhealthy decline in their blood sugar control, and their fat cells were overexpressing genes linked to unhealthy metabolic changes and were under-expressing genes involved in well-functioning metabolism. However, the exercising group had stable blood sugar levels and their fat cells showed less 'undesirable' genetic expression.

Jean-Philippe Walhin, a researcher on the study, says, "Short-term overfeeding and reduced physical activity had a dramatic impact on the overall metabolic health of the participants and on various key genes within fat tissue and exercise prevented these negative changes even though energy was still being stored."

Dr Dylan Thompson says: "If you are facing a period of overconsumption and inactivity, which is probably quite common around Christmas time, then our study shows that a daily bout of exercise will prevent many of the negative changes from taking place even though you are gaining weight."

The effects are obvious, but the underlying causes will need further study to be determined. The findings are likely to apply to other groups, like older adults and women, and perhaps to lesser amounts of training.


'/>"/>

Contact: Lucy Holmes
LHolmes@physoc.org
44-020-726-95727
Wiley
Source:Eurekalert

Related biology news :

1. Regular exercise in middle age protects against muscle weakness later in life
2. Exercise during pregnancy gives newborn brain development a head start
3. Research reveals roles for exercise and diet in aging, depression
4. For obese teen girls, aerobic exercise may trump resistance training in health benefits
5. Moderate exercise not only treats, but prevents depression
6. Biomedical Advanced Research and Development Authority (BARDA) Exercises Option with Pfenex Inc. To Extend Contract and Increase Funding for the Development of a Recombinant Protective Antigen (rPA) Based Anthrax Vaccine
7. Doubling the daily allowance of protein intake with diet and exercise protects muscle loss
8. MARC travel awards announced for the Grant Writing Seminar & Practical Exercises Workshop
9. Watermelon juice relieves post-exercise muscle soreness
10. UEA research shows moderate exercise could be good for your tendons
11. Exercise rescues mutated neural stem cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/18/2016)... 18, 2016  Extenua Inc., a pioneering developer ... use and access of ubiquitous on-premise and cloud ... American Cyber.  ... transformational C4ISR and Cyber initiatives in support of ... proven technology solutions," said Steve Visconti , ...
(Date:1/13/2016)... New York , January 13, 2016 ... Market Research has published a new market report titled ... Growth, Trends, and Forecast, 2015 - 2023. According to the ... in 2014 and is anticipated to reach US$1,625.8 mn ... 2015 to 2023. In terms of volume, the biometric ...
(Date:1/11/2016)... JOSE, Calif. , Jan. 11, 2016 ... of human interface solutions, today announced that its ClearPad ... driver integration (TDDI) products won two separate categories in ... Best Mobile Innovator and Best Technology Breakthrough. The Synaptics ... system cost, a simplified supply chain, thinner devices, brighter ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... Feb.10, 2016 ASAE is introducing a hybrid ... Companies (AMC) the option of joining or renewing through ... determined by staff size, every employee in any size ... and reap all available member benefits.   ... organizational membership options will allow organizations of any size ...
(Date:2/10/2016)... ... February 10, 2016 , ... Benchmark Research, a ... promotion of two long-standing principal investigators (PI) to the roles of Chief Medical ... Development. , Dr. Laurence Chu, a Benchmark Research PI in the Austin office, ...
(Date:2/10/2016)... ... 10, 2016 , ... Curoverse announced today that the open-source, ... capabilities for managing and processing genomic and health data at petabyte scale. ... and analyzing genomic data,” said Adam Berrey chief executive officer at Curoverse. “Microsoft ...
(Date:2/9/2016)... LITTLE FALLS, N.J. , Feb. 9, 2016 ... ), a biotechnology company specializing in the development ... the health of damaged tissues and organs, recently ... milestones for the first quarter of 2016. ... Regenicin began the new 2015 fiscal year in ...
Breaking Biology Technology: