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Change in body mass index is a stronger predictor of change in fat mass than lean mass in elderly black and white women
Author(s) -
Arngrímsson Sigurbjörn Á.,
McAuley Edward,
Evans Ellen M.
Publication year - 2009
Publication title -
american journal of human biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.559
H-Index - 81
eISSN - 1520-6300
pISSN - 1042-0533
DOI - 10.1002/ajhb.20833
Subject(s) - body mass index , lean body mass , hum , weight change , fat mass , medicine , endocrinology , zoology , body weight , obesity , biology , weight loss , art , performance art , art history
The aim of this study was to determine the relation between change in body mass index (BMI) and changes in fat mass (FM), lean soft tissue (LST), and percentage body fat (%Fat) in elderly (67.6 ± 6.0 years) women varying in race (53 black, 144 white) who underwent measurements of BMI, FM, LST, and %Fat at baseline and after 2 years. The group did not markedly change body composition over 2 years (BMI = −0.1 ± 1.5 kg/m 2 , P = 0.53; FM = 0.0 ± 2.8 kg, P = 0.95; LST = −0.4 ± 1.7 kg, P < 0.001; %Fat = 0.3 ± 2.0%, P = 0.06). Change in BMI predicted change in FM ( r = 0.90, SEE = 1.19 kg FM, P < 0.001) but was less predictive of change in %Fat ( r = 0.64, SEE = 1.54%Fat, P < 0.001). Change in BMI was curvilinearly related to change in LST adjusted for change in height ( R = 0.76, SEE = 1.10 kg LST, P < 0.001). Change in BMI more strongly predicts change in FM than LST and could be used to monitor change in FM in community‐dwelling women. Am. J. Hum. Biol., 2009. © 2008 Wiley‐Liss, Inc.