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No description available.

No research has been performed comparing percent body fat measurements using dual energy x-ray absorptiometry (DEXA) and air plethysmography after weight loss. The purpose of this investigation was to compare body composition assessments using the Bod Pod® Body Composition System (BP) and the DEXA ProdigyTM before and after an 8-week weight loss diet and exercise program. Based on prior comparison studies, it was hypothesized that percent fat values would be significantly lower using the BP compared to the DEXA before and after weight loss. Also since both methods have been shown to be reliable, it was hypothesized that the BP and DEXA would detect similar changes in percent fat in response to a weight-loss intervention. Twelve women (42 ± 8 yrs) and ten men (40 + 11 yrs) had their percent body fat estimated using the BP and whole body DEXA ProdigyTM scanner. A similar significant (P < 0.05) decrease in percent body fat was observed using the BP and DEXA ProdigyTM (-2.2% and -1.8%, respectively) after weight loss. Percent body fat using the BP was significantly lower than the DEXA ProdigyTM before (36 ± 10.7% and 38.1 ± 9.4%, respectively) and after (33.8 ± 10.8% and 36.3 + 10.6%, respectively) the weight loss program. Significant Pearson correlation coefficients between the DEXA ProdigyTM and the BP were noted pre (r = 0.975) and post (r = 0.968) weight loss. These data indicate the BP provides significantly lower absolute %fat values within a range of body fat levels (20-56%) when compared to the DEXA. However, the BP and DEXA detect similar changes in %fat, fatfree mass, and fat mass from weight loss in men and women. Also, the BP consistently overestimated fat-free mass and underestimated %fat and fat mass compared to values obtained from DEXA. / School of Physical Education

Thesis (Ph. D.)--University of Chicago Divinity School, December 1997. / Includes bibliographical references. Also available on the Internet.

Thesis (Ph. D. in English)--Vanderbilt University, Aug. 2008. / Title from title screen. Includes bibliographical references.

Thesis (M. Phil.)--University of Hong Kong, 2008. / Also available in print.

Thesis (M.A.)--Georgia State University, 2008. / Title from file title page. Elizabeth Sheff, committee chair; Dawn Baunach, Denise Donnelly, committee members. Electronic text (97 p.) : digital, PDF file. Description based on contents viewed June 24, 2008. Includes bibliographical references (p. 80-85).

Thesis (Ph. D.)--University of Oregon, 2004. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 390-428). Also available for download via the World Wide Web; free to University of Oregon users.

Thesis (Ph. D.)--University of Chicago, The Divinity School, August 2002. / Includes bibliographical references. Also available on the Internet.

A series of hyperthermic, static, torso phantom experiments have been performed. The results are presented in comparison to a two-dimensional, theoretical, electromagnetic model. The 2-D model is assessed for potential use in clinical plannings and evaluations. Included in the assay of this model are comparisons of actual clinical patient data. Theoretically calculated electromagnetic fields and temperatures are obtained using a finite element numerical method (FEM) based on weighted residuals. Two experimental methods of extracting energy deposition data are discussed and utilized: (1) by measuring temperature differentials to calculate specific absorption rates (SAR), and (2) by measuring the square of the E-field directly which relates proportionally to the absorbed power. The employed regional heat source is an annular phased array (APA) operating at 70 MHz. The outcome of the assessment suggests that the results can be quantitative for simple heterogeneous phantom problems, but remain qualitative for clinical evaluative purposes.