INFLUENCE OF BMI VALUE ON MIDDLE AND LONG DISTANCE RUNNING OF URBAN AND RURAL MIDDLE SCHOOL STUDENTS IN SOUTHWEST CHINA

Abstract. BMI is an important index used to evaluate human health status and degree of obesity in the world. The body mass index of middle school students affects the future national health level of our country. With the progress of the country and society, the health of the youth is the “health” of the motherland. In this paper, by sampling the physical index data of some urban and rural middle schools in Yunnan Province, the influence degree of BMI value on middle and long-distance running performance was analyzed by using relevant mathematical statistical methods. According to the data analysis, the influence coefficient is obtained. The BMI value is in the healthy range, and the middle and long distance running performance will be better accordingly. Obese and thin students do worse in middle and long distance running.