Regular exercise is associated with a delay in the onset of dementia and Alzheimers disease, according to a Group Health Cooperative/University of Washington study that will appear in the January 17 issue of Annals of Internal Medicine. The study--the most definitive investigation of exercise and dementia to date--also found that the more frail a person is, the more he or she may benefit from exercise.
"Even those elderly people who did modest amounts of gentle exercise, such as walking for 15 minutes three times a week, appeared to benefit," says Eric B. Larson, director of Group Health Cooperatives Center for Health Studies and the lead investigator for the study.
"Based on these findings, we can advise older people to use it even after you start to lose it, because exercise may slow the progression of age-related problems in thinking," said Larson.
Joan DeClaire | EurekAlert!
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Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
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Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
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A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
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