London: A long-held belief that whitening of skeletal muscle in diabetes is harmful has been busted.In fact, the white muscle that increases with resistance training, age and diabetes helps keep blood sugar in check, researchers in the Life Sciences Institute at the University of Michigan have revealed.In addition, the insights from the molecular pathways involved in this phenomenon and identified in the study may point the way to potential drug targets for obesity and metabolic disease.Much like poultry has light and dark meat, mammals have a range of muscles: red, white and those in between. Red muscle, which gets its colour in part from mitochondria, prevails in people who engage in endurance training, such as marathon runners. White muscle dominates in the bodies of weightlifters and sprinters-people who require short, intense bursts of energy.
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