2004-2009Dalian City Pupils’ Physique Growth Dynamics Research

Objective: Children and adolescents are the future and hope of the country.Growth and development of child and adolescent period is the basic life phenomenon,the growth status and later adult health are closely related. Monitoring and evaluation ofchild and adolescent growth, for health, growth and development can reflect the currentto the growth and development potential, for sick children, contribute to the earlydetection of the disease, and timely symptomatic treatment.The problem of obesity of children has become national and even worldwidepublic health problem. With the improvement of living standard and life style change,our country adolescent obesity is becoming a serious problem, which not only do harmto the healthy growth of the teenagers, and obesity in adulthood, hypertension,cardiovascular disease and diabetes and other diseases are important risk factors.Obesity on children and adolescents’ physiology and psychology are larger impact.Therefore the problem of obesity in children must be caused enough attention.Through tracing study of Dalian City7-12children’s height, weight, chestcircumference of3morphological indexes and derivative index BMI and Ververckindex, analysis of Dalian city children and adolescents’ body shape growth regularity,according to the "Chinese school-age children and adolescents of overweight, obesityBMI screening (BMI) classification evaluation of overweight and obesity," analysis ofDalian city of child and adolescent overweight and obesity rate change trend. Providethe basis for the formulation of nutritional status evaluation standard, school physicaleducation and health policy and health care measures.Methods: Using the stratified cluster sampling method from Dalian City District4(Zhongshan District, Xi’gang District, Shahekou District, Ganjingzi District) in148primary school extraction based sample. The district as a layer, the school as the base.From the4District in2randomly sampled district (Zhongshan District, ShahekouDistrict), according to the2003of every school enrollment scale, from the2District Committee of the Communist Party of China from11schools, and11schools in10592003enrollment of students entering the study.In samples from removing growth deficiency diseases pupils, parents of Chinesechildren, birth date is not in1996.6.1-1997.5.31years of primary school,934studentsentered the study. Date of birth registration obtained by. Precise decimal age is bymeasuring date minus the birth date of draw.Measurement of height, weight, chestcircumference of3morphological indexes, and calculate the derivative index BMI andVerverck index, a total of5indicators as the analysis of variables.Using double-factor and multi-level repeated measures analysis of varianceanalysis of male, schoolgirl height, weight, chest circumference in6years, BMI andVerverck index morphological index dynamic change, using the chi-squared testanalysis of overweight and obesity rate of dynamic change trend. SPSS13.0is used forstatistical analysis.Results: Male, female height, weight, chest circumference increased with ageshowed different growth trends.7-12,11-12old schoolboy height, body weight growthspeed;10-11old schoolgirl height growth rate, weight, height and weight growth ratehas consistency. Since9years old, female bust increased more than men. Boys in the9-10years old, Vererck index year growth rate is max, while girls in the11-12, Vererckindex growth rate maximum.The rate of obesity and overweight rate is always higher than that of girls, boys.The boys of overweight and obesity and the proportion of7years compared to increaseyear after year, every year; from the change of age,7-10increased,9-10years biggestvariation,10years and11years showed no change,12years relative to age11, declinein the proportion of. Girls only at the age of9and7years compared to the increasingproportion of overweight and obesity, the age of the change was not statisticallysignificant. Dalian City7-12old city of children and adolescent overweight and obesityrates are higher than the average of China.Conclusion: Dalian City7-12years old children and adolescents each shape indexincreased with age increasing, growth and development from the overall is still in thestage of rapid growth. Height, weight, chest circumference, BMI and Ververck indexare "gender differences". In general, the growth level than girls boys.Men of various indexes of different growth speed, boys and girls cross curveshave been. From each index growth rate, male height growth peak during the studyperiod cannot be determined, the girls of height growth peak in the10-11years old; both male and female students’ body weight during the study period growth rate showedincreasing trend;9-10boys bust the fastest growth, girls in the10-11, the fastest growth.We can according to the indices of rapid growth peak take some intervention measures,to ensure the healthy growth of children and adolescents.Dalian City in children and adolescents, overweight and obesity rates are stillincreasing, and higher than the national average, Boys and girls under the age of10, atthe age of9(in particular, obesity and the risk of8-9years) to take effective, feasibleintervention measures of weight control obesity prevention is of great significance.Balanced diet, physical exercise, increase health knowledge, raise awareness of health,society, parents or guardians and children together, in order to ensure the healthygrowth of children and adolescents.