Shivering and exercise convert white fat to brown
For example, 50 grams of white fat stores more than 300 calories of energy, while the same amount of brown fat can burn up to 300 calories a day, explained researchers who conducted the study at the U.S. National Institutes of Health (NIH). The study authors said their findings http://www.sbwire.com/press-releases/p90x3-reviews/sbwire-455028.htm may lead to ways to activate brown fat so as to fight obesity and diabetes. The investigators found that moderate exercise or shivering from being cold increased people’s levels of the hormones “irisin” (produced by muscle) and “FGF21” (produced by brown fat). Rises in irisin levels after 10 to 15 minutes of shivering were about the same as after an hour of moderate exercise on a stationary bicycle.
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Exercise & Oxygen Shortage in Chronic Fatigue Syndrome
They found irregularities that suggest the problem is in the mitochondria – tiny structures inside your cells that produce energy. What’s more, researchers say the participants did not show signs of deconditioning, which some have suggested could be behind low exercise tolerance and poor performance in ME/CFS. In addition to low oxygen extraction, researchers noted a higher cardiac output than in healthy controls. Researchers concluded that exercise intolerance in ME/CFS is due to abnormal metabolism at the mitochondrial level. What this means for you is that, essentially, it’s as if your exercising at a higher altitude than what your body is used to.
For the original version including any supplementary images or video, visit http://chronicfatigue.about.com/b/2014/02/07/exercise-oxygen-shortage-in-chronic-fatigue-syndrome.htm
The study is now published in Cell Metabolism. We are all born with supplies of brown fat around our necks, natures way of helping to keep us warm as infants. Until only a few years ago, it was thought to vanish in early infancy, but we now know that brown fat is present in most, if not all, adults. Adults with more brown fat are slimmer than those without.
For the original version including any supplementary images or video, visit http://scienceblog.com/70296/shivering-and-exercise-convert-white-fat-to-brown/