TY - JOUR
T1 - Validation study of the body adiposity index as a predictor of percent body fat in older individuals
T2 - Findings from the BLSA
AU - Chang, Hui
AU - Simonsick, Eleanor M.
AU - Ferrucci, Luigi
AU - Cooper, Jamie A.
N1 - Funding Information:
Funding Baltimore Longitudinal Study of Aging (BLSA) is supported by the Intramural Research Program of the National Institute on Aging of the National Institutes of Health.
Funding Information:
Acknowledgments We are extremely grateful for the support from Baltimore Longitudinal Study of Aging (BLSA) research group of the Intramural Research Program of the National Institute on Aging. We acknowledge the lifelong contributions of the BLSA study participants and the hard work of study research group members. The authors declared no conflict of interest.
PY - 2014/9
Y1 - 2014/9
N2 - A new body adiposity index (BAI = (hip circumference)/((height) 1.5) - 18) has been developed and validated in adult populations. We aimed to assess the validity of BAI in an older population. We compared the concordance correlation coefficient between BAI, body mass index (BMI), and percent body fat (fat%; by dual-energy X-ray absorptiometry) in an older population (n = 954) participating in the Baltimore Longitudinal Study of Aging. BAI was more strongly correlated with fat% than BMI (r of. 7 vs. 6 for BAI vs BMI and fat%, respectively, p <. 01) and exhibited a smaller mean difference from fat% (-5.2 vs -7.6 for BAI vs BMI and fat%, respectively, p <. 01) indicating better agreement. In men, however, BMI was in better agreement with fat% (r of. 6 vs. 7 for BAI vs BMI and fat%, respectively, p <. 01) with a smaller mean difference from fat% (-3.0 vs -2.2 for BAI vs BMI and fat%, respectively, p <. 01). Finally, BAI did not accurately predict fat% in people with a fat% below 15%. BAI provides valid estimation of body adiposity in an older adult population; however, BMI may be a better index for older men. Finally, BAI is not accurate in people with extremely low or high body fat percentages.
AB - A new body adiposity index (BAI = (hip circumference)/((height) 1.5) - 18) has been developed and validated in adult populations. We aimed to assess the validity of BAI in an older population. We compared the concordance correlation coefficient between BAI, body mass index (BMI), and percent body fat (fat%; by dual-energy X-ray absorptiometry) in an older population (n = 954) participating in the Baltimore Longitudinal Study of Aging. BAI was more strongly correlated with fat% than BMI (r of. 7 vs. 6 for BAI vs BMI and fat%, respectively, p <. 01) and exhibited a smaller mean difference from fat% (-5.2 vs -7.6 for BAI vs BMI and fat%, respectively, p <. 01) indicating better agreement. In men, however, BMI was in better agreement with fat% (r of. 6 vs. 7 for BAI vs BMI and fat%, respectively, p <. 01) with a smaller mean difference from fat% (-3.0 vs -2.2 for BAI vs BMI and fat%, respectively, p <. 01). Finally, BAI did not accurately predict fat% in people with a fat% below 15%. BAI provides valid estimation of body adiposity in an older adult population; however, BMI may be a better index for older men. Finally, BAI is not accurate in people with extremely low or high body fat percentages.
KW - BMI
KW - Body adiposity
KW - Older population
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U2 - 10.1093/gerona/glt165
DO - 10.1093/gerona/glt165
M3 - Article
C2 - 24158764
AN - SCOPUS:84906269793
SN - 1079-5006
VL - 69
SP - 1069
EP - 1075
JO - Journals of Gerontology - Series A Biological Sciences and Medical Sciences
JF - Journals of Gerontology - Series A Biological Sciences and Medical Sciences
IS - 9
ER -