Tracking of BMI in Japanese children from 6 to 18 years of age: Reference values for annual BMI incremental change and proposal for size of increment indicative of risk for obesity

Mikako Inokuchi, Nobutake Matsuo, John I. Takayama, Tomonobu Hasegawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Background: A large incremental increase in BMI indicates excess fat deposition in most children, but the reference values for identifying those at risk for developing obesity have not been defined.Aim: To determine the mean and SD of annual incremental change (ΔSDS) in BMI for Japanese school children. Subjects and methods: A cohort of 669 Japanese children in one private school in Tokyo in whom height and weight were measured annually between 6-17 years of age. Each child's BMI was converted to SDS as based on the 1978-1981 Japanese references for the 12 annual measurements to derive the correlation coefficient, r, between two successive measurements. Using the formula, SD of ΔSDS = √2(1-r), the mean and SD of ΔSDS were obtained. Results: Excess BMI gain was defined in terms of ΔSDS in Japanese children. Annual incremental increase greater than 2 SD of ΔSDS, equivalent to 1-2 BMI units/year for younger children and 2-3 BMI units/year for older children, respectively, indicates rapid increase in body fat in Japanese children. Conclusion: Based on analysis of incremental change in BMI in this cohort, a cut-off has been identified that can be used to identify children at risk for developing obesity.

Original languageEnglish
Pages (from-to)146-149
Number of pages4
JournalAnnals of Human Biology
Volume38
Issue number2
DOIs
Publication statusPublished - 2011 Mar

Fingerprint

Reference Values
Obesity
Tokyo
Adipose Tissue
Fats
Weights and Measures

Keywords

  • ΔSDS
  • BMI
  • Longitudinal study
  • Reference values

ASJC Scopus subject areas

  • Genetics
  • Physiology
  • Ageing
  • Public Health, Environmental and Occupational Health
  • Epidemiology

Cite this

@article{b92e72b0686f4132ae1b5a4e4aff8481,
title = "Tracking of BMI in Japanese children from 6 to 18 years of age: Reference values for annual BMI incremental change and proposal for size of increment indicative of risk for obesity",
abstract = "Background: A large incremental increase in BMI indicates excess fat deposition in most children, but the reference values for identifying those at risk for developing obesity have not been defined.Aim: To determine the mean and SD of annual incremental change (ΔSDS) in BMI for Japanese school children. Subjects and methods: A cohort of 669 Japanese children in one private school in Tokyo in whom height and weight were measured annually between 6-17 years of age. Each child's BMI was converted to SDS as based on the 1978-1981 Japanese references for the 12 annual measurements to derive the correlation coefficient, r, between two successive measurements. Using the formula, SD of ΔSDS = √2(1-r), the mean and SD of ΔSDS were obtained. Results: Excess BMI gain was defined in terms of ΔSDS in Japanese children. Annual incremental increase greater than 2 SD of ΔSDS, equivalent to 1-2 BMI units/year for younger children and 2-3 BMI units/year for older children, respectively, indicates rapid increase in body fat in Japanese children. Conclusion: Based on analysis of incremental change in BMI in this cohort, a cut-off has been identified that can be used to identify children at risk for developing obesity.",
keywords = "ΔSDS, BMI, Longitudinal study, Reference values",
author = "Mikako Inokuchi and Nobutake Matsuo and Takayama, {John I.} and Tomonobu Hasegawa",
year = "2011",
month = "3",
doi = "10.3109/03014460.2010.499883",
language = "English",
volume = "38",
pages = "146--149",
journal = "Annals of Human Biology",
issn = "0301-4460",
publisher = "Informa Healthcare",
number = "2",

}

TY - JOUR

T1 - Tracking of BMI in Japanese children from 6 to 18 years of age

T2 - Reference values for annual BMI incremental change and proposal for size of increment indicative of risk for obesity

AU - Inokuchi, Mikako

AU - Matsuo, Nobutake

AU - Takayama, John I.

AU - Hasegawa, Tomonobu

PY - 2011/3

Y1 - 2011/3

N2 - Background: A large incremental increase in BMI indicates excess fat deposition in most children, but the reference values for identifying those at risk for developing obesity have not been defined.Aim: To determine the mean and SD of annual incremental change (ΔSDS) in BMI for Japanese school children. Subjects and methods: A cohort of 669 Japanese children in one private school in Tokyo in whom height and weight were measured annually between 6-17 years of age. Each child's BMI was converted to SDS as based on the 1978-1981 Japanese references for the 12 annual measurements to derive the correlation coefficient, r, between two successive measurements. Using the formula, SD of ΔSDS = √2(1-r), the mean and SD of ΔSDS were obtained. Results: Excess BMI gain was defined in terms of ΔSDS in Japanese children. Annual incremental increase greater than 2 SD of ΔSDS, equivalent to 1-2 BMI units/year for younger children and 2-3 BMI units/year for older children, respectively, indicates rapid increase in body fat in Japanese children. Conclusion: Based on analysis of incremental change in BMI in this cohort, a cut-off has been identified that can be used to identify children at risk for developing obesity.

AB - Background: A large incremental increase in BMI indicates excess fat deposition in most children, but the reference values for identifying those at risk for developing obesity have not been defined.Aim: To determine the mean and SD of annual incremental change (ΔSDS) in BMI for Japanese school children. Subjects and methods: A cohort of 669 Japanese children in one private school in Tokyo in whom height and weight were measured annually between 6-17 years of age. Each child's BMI was converted to SDS as based on the 1978-1981 Japanese references for the 12 annual measurements to derive the correlation coefficient, r, between two successive measurements. Using the formula, SD of ΔSDS = √2(1-r), the mean and SD of ΔSDS were obtained. Results: Excess BMI gain was defined in terms of ΔSDS in Japanese children. Annual incremental increase greater than 2 SD of ΔSDS, equivalent to 1-2 BMI units/year for younger children and 2-3 BMI units/year for older children, respectively, indicates rapid increase in body fat in Japanese children. Conclusion: Based on analysis of incremental change in BMI in this cohort, a cut-off has been identified that can be used to identify children at risk for developing obesity.

KW - ΔSDS

KW - BMI

KW - Longitudinal study

KW - Reference values

UR - http://www.scopus.com/inward/record.url?scp=79551499834&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79551499834&partnerID=8YFLogxK

U2 - 10.3109/03014460.2010.499883

DO - 10.3109/03014460.2010.499883

M3 - Article

C2 - 20632778

AN - SCOPUS:79551499834

VL - 38

SP - 146

EP - 149

JO - Annals of Human Biology

JF - Annals of Human Biology

SN - 0301-4460

IS - 2

ER -