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Reference norms for evaluating maximum expiratory flow of children and adolescents of the Maule Region in Chile

dc.contributor.authorCossio-Bolaños M.A.
dc.contributor.authorAndruske C.
dc.contributor.authorArruda M.
dc.contributor.authorSulla-Torres J.
dc.contributor.authorPacheco-Carrillo J.
dc.contributor.authorUrra-Albornoz C.
dc.contributor.authorGomez-Campos R.
dc.date.accessioned2020-09-02T22:15:33Z
dc.date.available2020-09-02T22:15:33Z
dc.date.issued2018
dc.identifier10.7717/peerj.5157
dc.identifier.citation2018, 7, -
dc.identifier.issn21678359
dc.identifier.urihttps://hdl.handle.net/20.500.12728/4100
dc.descriptionBackground: The norms for evaluating the maximum expiratory flow (MEF) usually are developed according to chronological age and height. However, to date, little research has been conducted using reference values that take into account the temporal changes of biological maturation. The objectives of this study were to (a) compare the MEF with those of other international studies, (b) align the MEF values with chronological and biological age, and (c) propose reference standards for children and adolescents. Methods: The sample studied consisted of 3,566 students of both sexes (1,933 males and 1,633 females) ranging in age from 5.0 to 17.9 years old. Weight, standing height, and sitting height were measured. Body mass index was calculated. Biological maturation was predicted by using age of peak height velocity growth (APHV). MEF (L/min) was obtained by using a forced expiratory manoeuvre. Percentiles were calculated using the LMS method. Results and Discussion: Predicted APHV was at age 14.77 ± 0.78 years for males and for females at age 12.74 ± 1.0 years. Biological age was more useful than chronological age for assessing MEF in both sexes. Based on these findings, regional percentiles were created to diagnose and monitor the risk of asthma and the general expiratory status of paediatric populations. © 2018 Cossio-Bolaños et al.
dc.language.isoen
dc.publisherPeerJ Inc.
dc.subjectBiological age
dc.subjectChile
dc.subjectMaximum expiratory flow
dc.subjectPercentiles
dc.subjectaccuracy
dc.subjectadolescent
dc.subjectage
dc.subjectanthropometry
dc.subjectArticle
dc.subjectasthma
dc.subjectbody height
dc.subjectbody mass
dc.subjectchild
dc.subjectcross-sectional study
dc.subjectdaily life activity
dc.subjectfemale
dc.subjectforced vital capacity
dc.subjecthuman
dc.subjectleg length
dc.subjectlung function
dc.subjectmale
dc.subjectmaximal expiratory flow
dc.subjectmuscle strength
dc.subjectpeak expiratory flow
dc.subjectpeak height velocity growth
dc.subjectquestionnaire
dc.subjectschool child
dc.subjectsexual maturation
dc.subjectsitting height
dc.subjectspirometry
dc.subjectStanding height
dc.titleReference norms for evaluating maximum expiratory flow of children and adolescents of the Maule Region in Chile
dc.typeArticle


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