Validation of Longitudinal DXA Changes in Body Composition From Pre- to Mid-Adolescence Using MRI as Reference

Bridge, Pascale; Pocock, Nicholas; Nguyen, Tuan V.; Munns, Craig F; Cowell, Christopher T.; Forwood, Nicholas; Thompson, Martin W.

doi:10.1016/j.jocd.2011.04.005

Cited by 31 publications

(25 citation statements)

References 35 publications

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“…A strength of the present study was the use of DEXA, which is highly precise and provides validated measures of body composition (30). While multiple measures of weight and length in the first two years of life were available, data obtained from 'Health Booklets' were not collected for research purposes; therefore, variability in measurement precision is likely.…”

Section: Infant Growth Velocity Childhood Adiposity and Parental Infmentioning

confidence: 99%

Does parental body mass index status modify the associations among birth weight, early growth and childhood adiposity?

Gómez-López

Hulst

Barnett

et al. 2013

Paediatrics &Amp; Child Health

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Section: Infant Growth Velocity Childhood Adiposity and Parental Infmentioning

confidence: 99%

Does parental body mass index status modify the associations among birth weight, early growth and childhood adiposity?

Gómez-López

Hulst

Barnett

et al. 2013

Paediatrics &Amp; Child Health

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“…Indeed, these techniques generally overestimate FFM in obese adolescents (Lazzer et al 2003) and cannot be used to compare relative muscle strength between obese and nonobese young people. Dualenergy X-ray absorptiometry (DXA) would be more appropriate to measure total body and regional soft tissue composition as this technique was found to be highly precise and reproducible in nonobese and obese young people (Figueroa-Colon et al 1998;Bridge et al 2011;Tsang et al 2009). However, to the best of our knowledge, no study has used DXA measures of body dimensions to evaluate relative KE strength in obese and nonobese adolescents.…”

Section: Introductionmentioning

confidence: 99%

Knee extension strength in obese and nonobese male adolescents

Abdelmoula

Martín

Bouchant

et al. 2012

Appl. Physiol. Nutr. Metab.

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The aim of the present study was to compare "absolute" and "relative" knee extension strength between obese and nonobese adolescents. Ten nonobese and 12 severely obese adolescent boys of similar chronological age, maturity status, and height were compared. Total body and regional soft tissue composition were determined using dual-energy X-ray absorptiometry (DXA). Knee extensors maximum voluntary contraction (MVC) torque was measured using an isometric dynamometer at a knee angle of 60° (0° is full extension). Absolute MVC torque was significantly higher in obese adolescents than in controls. However, although MVC torque expressed per unit of body mass was found to be significantly lower in obese adolescent boys, no significant difference in MVC torque was found between groups when normalized to fat-free mass. Conversely, when correcting for thigh lean mass and estimated thigh muscle mass, MVC torque was significantly higher in the obese group (17.9% and 22.2%, respectively; P <0.05). To conclude, our sample of obese adolescent boys had higher absolute and relative knee extension strength than our nonobese controls. However, further studies are required to ascertain whether or not relative strength, measured with more accurate in vivo methods such as magnetic resonance imaging, is higher in obese adolescents than in nonobese controls.

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“…Dual X-ray absorptiometry (DXA) can accurately and precisely measure lean, fat and mineral body composition. It is commonly used in obesity research to determine body fat percent and has strong correlation with magnetic resonance imaging (MRI) and computed tomography (CT) among children and adults ( Bridge et al, 2011 , Kendler et al, 2013 , Gradmark et al, 2010 ). DXA is often used as the “gold-standard” measurement of body fat in validation studies of anthropometric measurements of obesity in both adult and pediatric populations ( Wohlfahrt-Veje et al, 2014 , Liu et al, 2015 , Freedman and Sherry, 2009 , Direk et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Built environment associations with adiposity parameters among overweight and obese Hispanic youth

Hsieh

Klassen

Curriero

et al. 2015

Preventive Medicine Reports

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ObjectiveThe purpose of this cross-sectional study was to establish neighborhood built environment correlates of adiposity as measured by dual X-ray absorptiometry. The utility and methodological gains of using this measure for built environment research were further investigated by comparing model fit across parallel models on body mass index z-scores and waist circumference.MethodsPre-existing data collected from 2001 to 2011 on 576 overweight and obese Hispanic youth were compiled with built environment data, and 2000 census data for analyses conducted in 2012. Walking-distance buffers were built around participants' residential locations. Variables for park space, food access, walkability, and neighborhood socio-cultural aspects were entered into a multivariate regression model predicting percent body fat. Parallel models were built for body mass index z-score, and waist circumference.ResultsSignificant associations were found between percent body fat and supermarket access for boys, and percent body fat and increased park space and decreased neighborhood linguistic isolation for girls. Neighborhood socio-cultural characteristics accounted for more variance in obesity compared to body mass index z-score or waist circumference.ConclusionPark access, food environment, and neighborhood socio-cultural characteristics are independent contributors to body fat in children, and the contribution of these risks differs by gender. There are incremental gains to using a more accurate measure of body fat in built environment obesity studies.

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Validation of Longitudinal DXA Changes in Body Composition From Pre- to Mid-Adolescence Using MRI as Reference

Cited by 31 publications

References 35 publications

Does parental body mass index status modify the associations among birth weight, early growth and childhood adiposity?

Does parental body mass index status modify the associations among birth weight, early growth and childhood adiposity?

Knee extension strength in obese and nonobese male adolescents

Built environment associations with adiposity parameters among overweight and obese Hispanic youth

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