Effect of exercise on lipid metabolism in the skeletal muscle fibers of male albino rat with reference to aging

Exercise is one of the active fielder in the research work. Wistar strain male albino rats of two age groups 3 months (young) and 18 months (old) were divided into 2 groups, Group I sedentary control(SC); Group II, exercise trained (ExT), (30 min, at a speed of 23 m/min/day/5 days/week for a period of 8 weeks). The animals were sacrificed after 24 hours of the last exercise training by cervical dislocation and the skeletal muscle fibers such as gastrocnemius (GN), soleus (SOL) and white vastus(WV), were isolated from the hind limbs of rats and selected lipid metabolites such as Totalcholesterol(TC) levels, Triglycerides(TG) levels, Phospholipids and lipid per oxidation were studied. In the present study the total cholesterol levels are increased with aging, but reduction was observed in the ExT muscles. In response to exercise, all three muscles two age groups showed a significant decrease in their triglyceride content. The phospholipids increase in ExT muscles, but decrease was observed with aging lipidperoxidation was increased in ExT muscles, decrease was observed with aging.