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Body fat reference curves for children.

H D McCarthy1, T J Cole, T Fry

  • 1Institute for Health Research & Policy, London Metropolitan University, London, UK. d.mccarthy@lodonmet.ac.uk

International Journal of Obesity (2005)
|March 30, 2006
PubMed
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New sex-specific body fat centile curves for children have been developed using bio-impedance. These charts improve the diagnosis of childhood obesity and adiposity by reflecting developmental differences between boys and girls.

Area of Science:

  • Pediatric endocrinology
  • Human growth and development
  • Public health and epidemiology

Background:

  • Childhood obesity is a growing public health concern.
  • Existing diagnostic tools like Body Mass Index (BMI) may not accurately reflect adiposity in children.
  • There is a need for sex-specific references to accurately assess body fat in pediatric populations.

Purpose of the Study:

  • To create new, sex-specific centile curves for body fat in children.
  • To base these references on a simple, affordable, and widely adoptable method.
  • To refine the diagnosis of childhood obesity and adiposity.

Main Methods:

  • Bio-impedance analysis was used to measure body fat in 1985 Caucasian children aged 5-18 years.
  • Data were collected from schools in Southern England.

Related Experiment Videos

  • Smoothed centile charts were derived using the LMS method.

    • Main Results:

    • New body fat curves demonstrate distinct sex-specific adiposity development post-puberty.
    • Males show a proportional decrease in body fat, while females continue to gain fat.
    • Existing BMI curves do not reveal these crucial sex differences.

    Conclusions:

    • Direct assessment of adiposity offers a significant advancement over BMI for identifying pathological overweight.
    • The new charts and accompanying software provide a valuable tool for clinical monitoring of body fat in children.
    • These sex-specific charts will aid in more accurate diagnosis and management of childhood obesity.