Author(s): Temple VA, Walkley JW, Greenway K
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Abstract BACKGROUND: Body mass index (BMI) has been identified as a key health indicator and determinant of health for people with intellectual disability. Our aim was to examine whether BMI is a useful indicator of adiposity among a sample of adults with intellectual disability. METHOD: Participants were 46 ambulatory community-dwelling volunteers with mild to moderate intellectual disability. Age ranged from 19 to 60 years, 25 were male, and 17 had Down syndrome. Soft tissue composition was determined using a dual-energy X-ray absorptiometer (DXA) and height and weight were directly assessed. RESULTS: Regression equations revealed that BMI accounted for 68\% of the variance in percent body fat and 83\% of the variance in total body fat. Partial correlations of BMI with fat and lean masses determined by DXA were r = .91 and r = -.12, respectively. A BMI of >or= 30 had excellent specificity for obesity, but less than optimal sensitivity. CONCLUSIONS: BMI appears to be a reasonable indicator of adiposity, although a BMI >or= 30 may misclassify a proportion of individuals assessed by DXA as obese.
This article was published in J Intellect Dev Disabil
and referenced in Journal of Novel Physiotherapies