成都市儿童青少年膳食纤维摄入情况与青春期发育的关系

Dietary Fiber and Pubertal Development among Children and Adolescents——a Cross-sectional Study in Chengdu,Sichuan

目的初步分析成都市儿童青少年膳食纤维摄入情况与青春期发育的关系。方法采用分层整群抽样法,选取成都市1 340名9~15岁儿童青少年为研究对象。采用24h膳食回顾法收集调查对象的膳食信息,并由专业人员现场测量及评价调查对象青春期发育情况。根据Tanner青春期发育阶段分期标准将男、女生分为未发育组、发育早期组与发育晚期组,比较不同组间膳食纤维摄入量的差异。结果有效样本量共1 328例。在667例男生中,处于发育早期的男生总纤维和水果纤维摄入量高于处于发育晚期的男生（P〈0.05）;在651例女生中,处于发育早期的女生水果纤维摄入量高于处于发育晚期的女生（P〈0.05）。结论青春期发育较晚的儿童青少年中,膳食纤维的摄入量较高,尤其是来源于水果的纤维,但膳食纤维与青春期发育的关系还有待进一步研究。

Objective To determine the association between intake of dietary fiber and pubertal development among children and adolescents in Chengdu.Methods A cross-sectional survey was undertaken in 1 340 children and adolescents aged 9-15 years.Data about dietary intake were collected through 24-h dietary self-recall.Pubertal development was measured by trained investigators using Tanner criteria.Consumptions of total fiber and fiber from different sources were compared among the participants with different stages of pubertal development.Results Data from 1 328 children and adolescents were analyzed.Boys（n=667）at a later stage of pubertal development consumed less total fiber and fruit fiber than those at an earlier stage（P0.05）.Similarly,girls（n=651）at a later stage of pubertal development consumed less fruit fiber than those at an earlier stage（P0.05）.ConclusionDietary fiber intake,especially fruit fiber,is lower in children and adolescents with early commencement of puberty development.Further studies are needed to establish the relationship between dietary fiber and pubertal development.