Association between light-intensity physical activity and adiposity in childhood

Soyang Kwon*, Kathleen F. Janz, Trudy L. Burns, Steven M. Levy

*Corresponding author for this work

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

The purpose of this study was to examine whether the association between daily light-intensity physical activity (LPA) and total body fat mass changes during childhood. The study sample was 577 children participating in the longitudinal Iowa Bone Development Study. Body fat mass and physical activity (PA) were measured using dual energy X-ray absorptiometry (DXA) and accelerometers, respectively, at approximately 5, 8, and 11 years of age. Age- and gender-specific multivariable linear regression models were fit to predict fat mass by LPA, adjusted for actual age, birth weight, fat-free mass, height, moderate- to vigorous-intensity PA, and physical maturity (only for girls). Among boys, LPA was negatively associated with fat mass at age 11, but not age 5 or 8. Among girls, LPA was negatively associated with fat mass at ages 8 and 11, but not at age 5. LPA may have a beneficial effect against excess adiposity among older children.

Original languageEnglish (US)
Pages (from-to)218-229
Number of pages12
JournalPediatric Exercise Science
Volume23
Issue number2
DOIs
StatePublished - May 2011

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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