Analysis On The Change Of The Morphology Character Of 20-25 Years Old Urban Adults In China

Objective: In this paper,based on the survey data in 2013,the 20-25 year old adult is chosen as the representative.Focusing on body type,this paper analyzes the morphology character of urban adults in our country at this stage.And compared with the survey data in 1979,aiming to explore the characteristics of body shape changes of urban adults in different social economic and cultural backgrounds.To further reveal the changing regulation of adult body shape,so as to provide a reference for China's physical anthropology,athletes selection and related application areas.Methods: Collected data from 1979 and 2013 physical monitoring data,screening out the 20-25 year old city adult.Comparing the body length,width,circumference and plumpness of urban adults before and after 34 years.Using Excel 2007 and SPSS 19.0 statistical software for data collation and statistical analysis.The general descriptive statistics of the measured values are represented by mean,standard deviation and extreme value.The independent samples t test and chi-square test were used in the inferential statistics.Using Origin Pro8.5 drawing software to do a non-linear fitting of individual indicators,Graphpad Prism 5 make a histogram.Using CLO 3D 2011 software production of human body structure model.Result: 1.At present,the somatotype characteristics of urban adults aged 20-25 years in China: The male is tall stature,long trunk,middle legs,middle shoulders,middle chest,narrow pelvis and middle body.The female is tall stature,long trunk,middle legs,narrow shoulders,middle chest,narrow pelvis and middle body.2.Changes in body length: During the 34 years between 1979 and 2013,China's 20-25 year old urban adults in addition to the length of the hands and feet,the length of the rest of the body showed an increase trend,and significant increase in calf length(The growth rate of males was 20.19%,females was 20.34%).Female in addition to sitting height growth faster than men,height,leg length and upper limbs are more male than female growth.The adult' SHR decreased,while LBR and MSI increased.The proportion of trunk relative to height is smaller,while the proportion of lower limbs height increases.The proportion of middle trunk type increased(Male and female were increased by 11.7% and 4.1%),and the proportion of long trunk type was reduced.The adult' medium legs and sub-short-legged number increased Male and female were increased by 36.5% and 41.6%,the number of short legs type is relatively reduced.3.Changes in body width: The shoulders of 20-25 year old adults were narrowed,and there was statistically significant difference between females(p<0.01).The number of moderate shoulders reduction,narrow shoulder type increased(Male and female were increased by 20.7% and 29.1%).The female's pelvis narrowed,and the male's pelvis widened.Differences were significant(p<0.01).4.Changes in body plumpness: City adults' weight,chest circumference,thigh circumference,BMI,QI and RI were increased.Urban adults' widened thoracic,narrow thoracic type decreased,and the number of moderate chest type increased significantly.In addition to the chest circumference(The growth rate of males was 4.44% and the females was 7.16%),the other indicators of male growth than women,the global body shape is more sturdy.Conclusion: 1.In 2013,20-25 years old urban adults in China are tall stature,long trunk,medium legs,medium chest and narrow pelvis.The male's shoulder is medium shoulder type,the female's is narrow shoulder type.2.Compared with 1979,China's 20-25 year old city adults showed a tall stature,trunk and limbs longer,thoracic and legs circumference more thick in 2013.The horizontal growth rate was faster than that of vertical growth,and the global body shape showed a trend of transition from the middle type body to the pyknic type body.3.The height growth of lower limbs of 20-25 year old urban adults is faster than that of the trunk,and the change of lower legs len gth contributes to the growth of legs length.4.China's 20-25 years old urban female's shoulders and pelvis narrowed,narrow shoulder and narrow pelvis type increased.