Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Exercise after meals may aid weight loss

05.06.2007
Main messages:
1.New research has found that exercise after meals may be effective in promoting weight loss
2.This is because exercise causes a short-term increase in the levels of hormones that reduce appetite

Exercise after meals may help you lose weight. Research in this month’s Journal of Endocrinology shows that exercise after meals reduces appetite in the short-term by increasing the level of hormones that tell our brain when our stomach is full. When the energy sweated off through exercise is taken into account, at the next mealtime people who have exercised consume less calories overall than people who haven’t.

Researchers at the University of Surrey and Imperial College London, led by Dr Denise Robertson, studied how exercise after a meal affects hunger levels, the amount of food eaten at the next meal and the level of hormones produced by the gut. These ‘hunger’ hormones, called PYY, GLP-1 and PP tell your brain when your stomach is full. Twelve volunteers were fed a standardised breakfast. Half of them then exercised for an hour while the other half sat quietly. Both groups were left for another hour and then allowed to eat as much as they liked.

Levels of ‘hunger’ hormones increased during and immediately after exercise with volunteers also reporting feeling less hungry during this time. Unsurprisingly, people who exercised burned more calories (492 kcal) than those who sat quietly (197 kcal). When given the chance to eat afterwards, people who had exercised ate more (913 kcal) than people who hadn’t (762 kcal). However, when the amount of energy burned during exercise was taken into account, people who had exercised took in less calories overall than people who didn’t (421 kcal for exercise group vs. 565 kcal for non-exercise group).

Approximately 60% of people in the UK are now overweight. A major cause of this is suspected to be the huge decrease in our physical activity over the last 20 years. Obesity is linked to many health problems including heart disease, stroke, diabetes and cancer and is responsible for 9000 premature deaths each year in England alone. This study provides further evidence that exercise may aid weight loss and weight maintenance as part of a healthy balanced lifestyle.

Researcher Dr Denise Robertson said:

“In the past we have been concerned that, although exercise burns energy, people subsequently ate more after working out. This would cancel out any possible weight reduction effects of exercise. Our research found that moderate exercise after a meal may decrease hunger during the exercise itself by increasing the amount of hormones that tell the brain our stomach is full. At the next mealtime, when the amount of energy burned through exercise is taken into account, people who had exercised consume fewer calories than those who hadn’t. This is an initial study where we only examined a small number of people. We now need to carry out a larger study to confirm this effect, and the mechanisms of how it occurs.

Obesity is one of the major health problems facing people in the UK today. It can lead to many serious medical conditions such as diabetes and heart disease. Our research shows that exercise may alter people’s appetite to help them lose weight and prevent further weight gain as part of a healthy, balanced lifestyle.”

Jennie Evans | alfa
Further information:
http://www.endocrinology.org

More articles from Health and Medicine:

nachricht NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures
17.11.2017 | National Institute of Standards and Technology (NIST)

nachricht High speed video recording precisely measures blood cell velocity
15.11.2017 | ITMO University

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Carefully crafted light pulses control neuron activity

20.11.2017 | Life Sciences

SYSTEMS INTEGRATION 2018 in Switzerland focuses on building blocks for industrial digitalization

20.11.2017 | Trade Fair News

Heavy nitrogen molecules reveal planetary-scale tug-of-war

20.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>