Research On Develop Principles Of Adolescen-ts Aged 7-18 In Guang Dong Province

Taking the movement speed as the research object,taking the adolescents aged 7-18 years in Guangdong province as the respondents.Study the development disciplines of children and adolescents movement speed from theory and empirical these two aspects with literature,experimental research and mathematical statistics and other research methods.The results show that,1.The average performance of 50 meters run of 7-18 year-old children and adolescents in Guangdong Province with time changes in the wave and the stage is mainly reflected in that male children and adolescents aged at 7-12 is called the rapid growth stage,13-15 years old is the slow growth stage,16-18 years old is relatively stable stage;girls and adolescents aged at 7-12 years old is called rapid growth stage,13-18 years old is at relative Stable stage.2.Male and female children and adolescents in different age groups have different levels,in which development speed and growth rate is not equal to the rate of growth.Among them,girls at the age of 17 was negative growth,which reflects the development of mobile speed non-scalability fully.3.By analysis of children and adolescents in different periods of 50 meters running level,we can see the uneven characteristics of the growth and development of children and adolescents.4.There was a significant difference in the growth level and speed of male and female movement speed,especially in the puberty,there is a particularity of the intersection between the growth speed and the moving speed.5.Using the percentile and standard percentage method to establish evaluation criteria of mobile speed that 7-18 year-old children and adolescents in Guangdong Province have.And cases study with different methods of evaluation criteria,which have been thought having a good practical significance.