An Analysis Of The Changes Of The Physical Condition Of The Adolescents Of Han And Bai In 7-18 Years Old In Dali From 2005 To

Purpose: The purpose of this article is to analyze the dynamic changes of physical fitness and health of 7-18 years old Han and Bai nationality in Dali area among 2005, 2010 and 2015,to explore the changing trends and gaps in the period. In order to improve the physical fitness and health of students between 7-18 in Dali area.Method: Method of random sampling was employed in this research, I located the school and separated the grade the first clear school, second grade, and use the class as a unit of random sampling. The original data database of 2015 national student physical health research in Dali Han and Bai 7-18 years old children and adolescents was established through access03, combined the data from 2005, 2010, 2015 and using the statistical software SPSS17.0 to analyze the result. I synthesized the students’ growth rate of body shape(height, weight and chest circumference) and physical function(FVC), physical(sitting body flexion, standing long jump, 50 meter run, 50 x 8, 800, 1000 meters) and use the questionnaire to make sure the research result is objective and reasonable.Result:1. It is indicated that in Dali area, the Bai students and Han students(2005 – 2015)body shape trend to growth. In the past ten years, the average growth rate of the Han and Bai students is faster than the literature reported. At the same time, Dali in Han, Bai students bust although presents growth trend, but did not increase with the growth of height and weight.2. During 2005-2015, Dali Bai and Han nationality students’ physical function presents an overall upward trend, both for male and female. But growth rate of girls was significantly lower than that of the growth rate of boys.3. However in these years, the students’ kinematic velocity, flexibility, endurance quality and explosive qualities are showing a downward trend.4. These downward trend could be caused by the overwhelmed learning burden and the neglect the school sports work, some school even canceled the class-break setting-up exercise and lead to the compression of activity time. The dietary habit daily life style plus the lack of sports funding also effected the student’s physique and health.