7~8岁青春期前儿童体重和体成分与骨龄的关系

The relationship between weight,body composition and bone age of prepubertal children aged 7-8 years

目的了解7~8岁青春期前儿童的体重、体成分和骨龄情况,探讨体质指数、体脂百分比与骨龄的关系。方法选取2019年7月—2020年8月在东莞市妇幼保健院儿童保健科进行体格检查、人体成分分析及骨龄评定的92例7~8岁青春期前儿童作为研究对象,并将其分为肥胖组和正常对照组,比较两组骨龄、体质指数及体脂百分比的差异。结果肥胖组骨龄超前者19例(35.2%),对照组骨龄超前者5例(13.2%),两组骨龄超前发生率差异有统计学意义(χ^(2)=5.613,P=0.018)。经Person相关分析,7~8岁青春期前儿童骨龄与体质指数和体脂百分比呈正相关(r=0.491、P<0.05,r=0.401、P<0.05)。结论肥胖儿童容易出现骨龄超前。建议肥胖儿童除控制饮食、加强体育锻炼,定期监测骨龄及第二性征发育情况。

Objective To analyze weight, body composition and bone age(BA) of 7-8 years old prepubertal children, and to explore the relationship between body mass index(BMI), percentage of body fat(PBF) and BA.Methods 92 cases of 7-8 years old prepubertal children were selected for physical examination, body composition analysis and BA assessment in Dongguan Maternal and Child Health Care Hospital from July 2019 to August 2020,and compare the differences in BA, BMI and PBF between obese group and control group.Results There were 19 cases(35. 2%) with advanced BA in the obesity group and 5 cases(13. 2%) in the control group. There was a significant difference between the two groups(χ^(2)= 5. 613,P= 0. 018), in addition BMI and PBF were positively correlated with BA of 7-8 years old prepubertal children(r= 0. 491,P< 0. 05,r= 0. 401,P< 0. 05).Conclusion Obese children are prone to appear advanced BA. It is recommended that obese children control their diet, strengthen physical exercises, and regularly monitor BA and puberty development.