| Objective: To explore the correlation between obesity and adolescent development in 7 14 years old pupils in Lanzhou,and provide theoretical basis for early intervention of obesity precocity in children.Methods: From 2020 to 2021,a stratified cluster sampling method was used to randomly select 3731 primary school students from four districts of Lanzhou for questionnaire and physical examination,including basic information,living habits,height,weight,secondary sexual characteristics,etc.The research objects were divided into obese group and non-obese group,adolescent development group and underdeveloped group.SPSS26.0 software was used for data analysis,single factor two-independent sample test,X2 test and binary Logistic regression model were used to analyze the influencing factors of obesity and adolescent development.Results: 1.The effective survey of 3612 people,the effective rate of 96.81%,lanzhou 7 to 14 years old primary school obesity incidence 27.30%（986/3612）,boys32.47%（627/1931）,girls 21.36%（359/1681）;The pubertal development rate was21.00%（758/3612）,10.31%（199/1931）for boys and 33.25%（559/1681）for girls.2.In the obese group,the pubertal development rate was 22.92%（226/986）,17.07%（107/627）for boys and 33.15%（119/359）for girls.In the non-obese group,the puberty development rate was 20.26%（532/2626）,7.05%（92/1304）in boys and33.28%（440/1322）in girls.There were 768 boys before 9 years old,including 229（29.82%,229/768）for obesity,23（2.99%,23/768）for sexual development,14（6.11%,14/229）for obese boys,and 9（1.67%,9/539）for non-obese boys.There were a total of 282 girls before 8 years of age,of which 66 were obese（23.40%,66/282）,3 were sexually developed（4.55%,3/282）,2 were sexually developed obese girls（3.03%,2/66）,and 1 was sexually developed non-obese girls（0.46%,1/216）.Precocious puberty was detected in 26 cases（2.47%,26/1050）,16 cases in obese children（5.42%,16/295）and 10 cases in non-obese children（1.32%,10/755）.3.The results of binary Logistic regression analysis showed that adolescent boys（OR=1195.762,95%CI= 19.883-71912.083）were statistically associated with obesity.Among obese students: Age（OR=1.498,95%CI= 1.195 1.877）,male students（OR=0.145,95%CI= 0.087-0.244）,sleeping with the light off（OR=0.393,95%CI= 0.180 0.861）,parents concerned about their sexual development（OR=0.086,95%CI= 0.024~0.304）and good short-term weight control（OR=0.551,95%CI= 0.341~0.889）were statistically associated with adolescent development.Among non-obese students: Height of father（OR=0.002,95%CI=0.000~0.040）,male（OR=0.050,95%CI=0.033 0.076）,maternal menarche（OR=0.859,95%CI=0.776 0.951）,term（OR=0.473,95%CI= 0.226 0.992）,no snoring（OR=0.467,95%CI= 0.279~0.782）,no exercise（OR=3.111,95%CI= 1.254~7.714）,no emotional products（OR=0.606,95%CI= 0.359~1.024）and age（OR=1.757,95%CI= 1.477~2.089）were statistically correlated with adolescent development.Among boys before 9 years old,non-only child（OR=0.177,95%CI= 0.059~0.529）and infrequent consumption of plastic packaged food（OR=0.265,95%CI= 0.096~0.730）were statistically associated with adolescent development.There was a statistical association between parental attention to sexual development（OR=0.034,95%CI= 0.002~0.690）and adolescent development in girls before 8 years of age. |
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