OBJECTIVE: To examine the relation between baseline fat mass and gain in bone area and bone mass in preschoolers studied prospectively for 4 years, with a focus on the role of physical activity and TV viewing. STUDY DESIGN: Children were part of a longitudinal study in which measures of fat, lean and bone mass, height, weight, activity, and diet were taken every 4 months from ages 3 to 7 years. Activity was measured by accelerometer and TV viewing by parent checklist. We included 214 children with total body dual energy x-ray absorptiometry (Hologic 4500A) scans at ages 3.5 and 7 years. RESULTS: Higher baseline fat mass was associated with smaller increases in bone area and bone mass over the next 3.5 years (P < .001). More TV viewing was related to smaller gains in bone area and bone mass accounting for race, sex, and height. Activity by accelerometer was not associated with bone gains. CONCLUSIONS: Adiposity and TV viewing are related to less bone accrual in preschoolers.
OBJECTIVE: To examine the relation between baseline fat mass and gain in bone area and bone mass in preschoolers studied prospectively for 4 years, with a focus on the role of physical activity and TV viewing. STUDY DESIGN:Children were part of a longitudinal study in which measures of fat, lean and bone mass, height, weight, activity, and diet were taken every 4 months from ages 3 to 7 years. Activity was measured by accelerometer and TV viewing by parent checklist. We included 214 children with total body dual energy x-ray absorptiometry (Hologic 4500A) scans at ages 3.5 and 7 years. RESULTS: Higher baseline fat mass was associated with smaller increases in bone area and bone mass over the next 3.5 years (P < .001). More TV viewing was related to smaller gains in bone area and bone mass accounting for race, sex, and height. Activity by accelerometer was not associated with bone gains. CONCLUSIONS: Adiposity and TV viewing are related to less bone accrual in preschoolers.
Authors: Cynthia L Ogden; Margaret D Carroll; Lester R Curtin; Margaret A McDowell; Carolyn J Tabak; Katherine M Flegal Journal: JAMA Date: 2006-04-05 Impact factor: 56.272
Authors: May-Choo Wang; Patricia B Crawford; Mark Hudes; Marta Van Loan; Kirstin Siemering; Laura K Bachrach Journal: Am J Clin Nutr Date: 2003-02 Impact factor: 7.045
Authors: K O Klein; K A Larmore; E de Lancey; J M Brown; R V Considine; S G Hassink Journal: J Clin Endocrinol Metab Date: 1998-10 Impact factor: 5.958
Authors: Karen S Wosje; Philip R Khoury; Randal P Claytor; Kristen A Copeland; Richard W Hornung; Stephen R Daniels; Heidi J Kalkwarf Journal: Am J Clin Nutr Date: 2010-06-02 Impact factor: 7.045
Authors: Hannes Hrafnkelsson; Gunnar Sigurdsson; Kristjan Th Magnusson; Emil L Sigurdsson; Erlingur Johannsson Journal: J Bone Miner Metab Date: 2013-02-09 Impact factor: 2.626
Authors: Norman K Pollock; Paul J Bernard; Bernard Gutin; Catherine L Davis; Haidong Zhu; Yanbin Dong Journal: J Pediatr Date: 2011-01-13 Impact factor: 4.406
Authors: Jill L Kaar; Sarah J Schmiege; Heidi J Kalkwarf; Jessica G Woo; Stephen R Daniels; Stacey L Simon Journal: Child Obes Date: 2019-11-21 Impact factor: 2.992