The Investigation On Primary And Secondary Students' Physical Fitness And Physical Exercise Status Of Dong Nationality Of Hunan Province

In May 2009, the physical fitness of 1275 male and female students (7-18 years old, Dong Nationality of Hunan Province) was tested and their participation in physical exercise was also investigated. The research and analysis conclusions were as follows:1. The BF% of age-related change of Dong nationality was same as those of Han nationality and Dong nationality of Guizhou Province, and BF% and LBM gender difference was significant with age-related change. The body fat level of Dong nationality male students were significantly lower than that of Han nationality male students in Hunan Province. When in adolescence, the fact accumulation speed of Hunan Dong nationality female students was faster than that of Han nationality. The BF% of age-related change of Dong nationality female students in Hunan province was significantly higher than those in Guizhou province.2. Hunan Dong nationality students'The height, sitting height, body weight and circumference were lower than Han nationality students', but the trend of the age-related change was almost same, but the increase range was lager for the former. Male students'somatotype was mostly ectomorphic mesomorphy and mesomorphic ectommophy, and for female students before 12 years old the somatotype was uniform in various ages, and developed to endomorphy after adolescence spurt. The primary and secondary students'overweight rate and obesity rate were at a low level.3. Hunan Dong nationality male students'puberty spurt period was later one year than Han nationality', while for the female was almost same.4. The resting heart rate and blood pressure of Dong nationality students in Hunan province were in normal range, and the overall level of vital capacity was significantly higher than that of Dong nationality students in Guizhou province. The speed quality of Dong nationality students was lower than that of Han nationality, and the quality of endurance, strength and flexibility after 13 years old was better than Han nationality students. Age-related trends in physical fitness was consistent for the Dong nationality students of Huan and Guizhou province, but the physical fitness was overall better for the former, and in most age groups, the difference was significant.5. The participation exercise frequency, timing and intensity for Dong nationality students in Hunan province was not enough, and existed broad segment of the school-age and gender differences. The comparison showed that Hunan Dong nationality student'physical exercise was in general better than the whole domestic Han nationality students in the national survey of 2005 level. The results confirmed that:despite the existence of different ethnic groups'biological genetic differences, influence of the natural and human environment (physical exercise, etc.) factors could lead to a weakening of difference or even reversal of the positive and negative.