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Live Long and Perspire: Exercise may slow aging at chromosomal level

02-02-2008 · Science News Online

A new study finds that a sedentary lifestyle is linked to short telomeres on chromosomes, potentially a sign of rapid aging.

Keywords: live, perspire, exercise, slow, aging, chromosomal, level

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Cutting calories helps rodents live longer by boosting cells' ability to recycle damaged parts so they can maintain efficient energy production, according to a University of Florida Institute on Aging study. Understanding how the process works at the cellular level in rodents could help scientists develop drugs that mimic the process in humans.
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Researchers have discovered the dramatic changes that occur in our muscles when we push ourselves during exercise. We all have a sustainable level of exercise intensity, known as the "critical power." This level can increase as we get fitter, but will always involve us working at around 75-80 percent of our maximal capacity. This research shows why, when we go beyond this level, we have to slow down or stop altogether.
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Good for the goose, not so great for the gander
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A provocative new model proposed by USC molecular biologist John Tower may help answer an enduring scientific question: Why do women tend to live longer than men? The model suggests how, on a genetic level, the evolution of aging and sex may be inextricably linked. It concludes that sexual differentiation processes may exact a high biological cost -- reduced function of the cell’s mitochondria and shorter life span in males.
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Fruit flies live significantly longer when the activity of the protein p53 is reduced in just 14 insulin-producing cells in their brains, new Brown University research shows. The results put scientists one step closer to understanding caloric restriction, a biochemical process proven to slow aging. Results appear in the Proceedings of the National Academy of Sciences.
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Treatments to keep the brain healthy can be just as effective as exercise is for the body, according to the latest special issue of The Journal of Gerontology -- Psychological Sciences. The volume, titled "Cognitive Interventions and Aging," features research devoted to methods for preserving mental function -- from training routines and medication to more modern approaches such as civic engagement and the use of technology.
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08-20-2007 · EurekAlert!
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These days, it's easy for people to get confused about exercise -- how many minutes a day should they spend working out, for how long and at what exertion level? Conflicting facts and opinions abound, but one Mayo Clinic physician says the bottom line is this: Walking is good, whether the outcome measurement is blood pressure, diabetes, cardiovascular disease, joint problems or mental health.
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Transtheoretical model may help to identify OSA patients' level of intention to exercise
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First Non-invasive Test To Measure Skin Aging; Results Suggest Women's Skin Ages Faster Than Men's
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