The topics mainly makes a comparison of blood glucose concentration,blood fat concentration and body mass index between some old people who engage in fitness exercise and old people who exercise less in Hunan City University and Yiyang Vocational and Technical College in order to study effects of fitness exercise on the concentration of blood glucose and blood fat and body weight for the elderly.The conclusion is that long-term fitness exercise can improve HDL-C levels and lower LDL-C levels and the ratio of TC/HDL-C and LDL-C/HDL-C,to help to maintain the stability of blood glucose concentrat...