It is clearly recognized that regular and prolonged meetings d' physical-activity of the aerobic type, like the bicycle, the race on foot and swimming, increase the sensitivity to l' insulin on the level of the muscles, a phenomenon which delays l' appearance of the diabetes. New research also shows that l' physical drive stimulates the pancreas, the gland which secretes l' insulin. The first event to occur in the chronology of the development of the diabetes is a resistance of fabrics to l' insulin. “But there must be also failure of the pancreas for qu' the diabetes appears”, underlines Raynald Bergeron of the department of kinesiology of l' University of Montreal. The role of l' insulin is to insert in the cells, in l' occurrence those of the muscles, glucose in circulation which arrives of the digestive system. However in the diabetics, all occurs as if the lock which corresponds to the receivers on the muscular cells did not recognize any more the key qu' is l' insulin. “When l' insulin binds to its receiver, a cascade d' intracellular events will lastly cause the migration of conveyors of glucose towards the membrane of the cell where while acting as a channel they will help glucose to penetrate in the cell”, specifies it. However of the biopsies of muscles clearly showed that l' drive improves at l' human the migration of the conveyors of glucose and supports better an insertion in the cellular membrane. In its laboratory, Raynald Bergeron recently carried out studies which showed in rats which become spontaneously diabetics that “l' physical drive prevents l' appearance of the diabetes thanks to an improvement of secretion d' insulin by the pancreatic cells”. That wants to thus say that “if quelqu'
one becomes resistant to l' insulin, [like that occurs initially in the development of the diabetes], l' physical drive will make its pancreas able to meet its increased requirements out of insulin [because of its resistance to l' insulin]. In our experiment, the trained animals were able to secrete d' more; insulin that the more sedentary animals”, underlines l' endocrinologist Bergeron. It is thus clear that l' physical-activity helps to prevent the diabetes.
July 01, 2009
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