Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Exercise in cold water may increase appetite

06.05.2005


Exercise in cold water instead of warm water may increase people’s appetites, making it harder for them to lose extra pounds, a University of Florida study finds.



Results indicate people may consume more calories after exercising in cold water, according to Lesley White, a UF researcher who designed the study to better understand why aquatic exercise is often less successful than equal amounts of jogging or cycling for people who want to lose weight. "It’s possible that individuals who exercise in cooler water may have an exaggerated energy intake following exercise, which may be a reason why they don’t lose as much weight," said White, an assistant professor in the College of Health and Human Performance. "So it may not be the exercise itself that causes the problem because you can match the exercise energy expenditure; rather it’s the increased eating after the exercise is over."

White said her research is not meant to suggest that swimming or aquatic exercise is ineffective for building physical fitness. In fact, water exercise is suggested for people who are overweight because the buoyancy given by the water makes exercising easier for people with joint or balance problems. "Water exercise is an excellent activity for many people, particularly those with joint disorders, thermal regulatory problems and balance or coordination difficulties," she said. "However, an earlier study reported that women who swam did not lose as much weight as those who jogged or cycled."


For her study, published in February in the International Journal of Sport Nutrition and Exercise Metabolism, White tracked the energy used by 11 UF students as they rode a stationary bicycle submerged in water for 45 minutes. The students exercised in cold water of 68 degrees Fahrenheit and warm water of 91.4 degrees Fahrenheit. The same students, ages 21 to 31, also spent 45 minutes resting. The study found the students used a similar amount of energy during the exercises, 517 calories in the cold water and 505 in the warm water. Students expended 123 calories while resting.

After each exercise session and the rest period, the students were allowed into a room to measure their blood pressure and heart rates. They were left to rest for one hour in the same room and had free access to a standard assortment of food of known caloric values. However, the students didn’t know their caloric intake was going to be measured. "We found that during the recovery period when the subjects had access to an assortment of foods that significantly more calories were eaten after exercise in cold water compared to exercise in warm water or at rest," White said.

Caloric intake after exercise in cold water was 44 percent higher than exercise in warm water and 41 percent higher than in the resting periods. The students consumed a mean 877 calories after exercise in cold water, 608 calories after exercise in warm water and 618 after resting periods. "This is a preliminary study, which suggests that environmental conditions during exercise may influence post-exercise appetite," White said. Individuals should consider the kinds of foods they eat after exercise, she added.

White suggested that body temperature might have some influence over post-exercise appetite. A previous study by her colleague Dr. Rudolph Dressendorfer indicated that body temperature at the end of exercise can affect post-exercise appetite. "Aquatic exercise is widely used in weight-loss programs, especially for those people with orthopedic concerns," said Dressendorfer, an adjunct professor with the faculty of physical education and recreation at the University of Alberta and a physical therapist. "The practical implication of this study is that cold water temperature could frustrate weight loss by increasing caloric intake. This study also provides some theoretical insight to the mechanism of appetite after exercise."

Lesley White | EurekAlert!
Further information:
http://www.ufl.edu

More articles from Studies and Analyses:

nachricht Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
17.03.2017 | University of Maryland

nachricht Diabetes Drug May Improve Bone Fat-induced Defects of Fracture Healing
17.03.2017 | Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

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

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Northern oceans pumped CO2 into the atmosphere

27.03.2017 | Earth Sciences

Fingerprint' technique spots frog populations at risk from pollution

27.03.2017 | Life Sciences

Big data approach to predict protein structure

27.03.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>