2.50
Hdl Handle:
http://hdl.handle.net/10755/166096
Category:
Abstract
Type:
Presentation
Title:
Validating Estimates Of Regional Fat In Mexican American Women
Author(s):
Keller, Colleen
Author Details:
Colleen Keller, PhD, Professor, University of Texas Health Science Center at San Antonio School of Nursing, San Antonio, Texas, USA, email: kellercs@uthscsa.edu
Abstract:
Background: population studies show strong correlations between abdominal distribution of adipose tissue and established risk factors for cardiovascular disease. Body fat distribution (BFD) estimates must be reliably and safely done with a minimum of equipment cost and risk to the individual. Indirect anthropometric measures offer a non-invasive, safe method of estimating BFD and have been shown to reliably parallel CT estimates in Black and white non-Hispanic women. Specific Aim: to determine the reliability and validity of four indirect measures of BFD by comparing and contrasting sagittal abdominal diameter/thigh ratio index (SDI) sagittal abdominal diameter (SAD), waist-hip ratio (WHR), and waist-thigh ratio (WTR) to computerized tomography (CT) measurement in Mexican-American women. Methods: Fifty outpatient Mexican-American women between the ages of 18 and 65 (M = 47.3) undergoing elective, diagnostic abdominal computerized tomography comprised the sample. Women undergoing CT for undifferentiated abdominal pain, abnormal liver function, hematuria, etc. were recruited; women whose CT reports abdominal mass or other pathology resulting in alteration of the abdominal integrity or who have underlying pathology affecting fat distribution were excluded. SAD was measured with the Holtain-Kahn SAD caliper in the reclining position. Thigh girth was measured one half way between the inguinal crease and the patella, taken in the reclining patient. Waist-hip measurements were obtained with a fiberglass tape measure; the waist circumference was measured at the narrowest spot between the ribs and hips, or when a narrow point was not evident, the midpoint between the lowest rib and the iliac crest. The hip circumference was measured at the widest circumference. The WHR was taken in both the standing and supine position. The CT scans were obtained using a Tomscan 60 TX (Phillips Medical System) and GE Helical CT Unit (General Electric Medical Systems), using 120 kv, 5 or 10 mm slices with appropriate mA, exposure time, and field of view. Axial CT measurements of at least three slices at L-4 and L-5 of 7mm interscan distance were obtained from abdominal CT images the L-4 level corresponds to the umbilicus level where waist circumference is usually measured. Results: The correlation between the CT SAD and the caliper SAD was 0.89 (p< .001), demonstrating that the external measure of regional fat closely approximated that of the CT measure of regional fat. The body mass index, an estimation of body fatness, was correlated with both the caliper SAD and the CT SAD r = 0.70 (p< .001) and r = 0.82 (p< .001) respectively. Thus, the external measure of the SAD provides a reliable estimate of regional fat distribution.
Repository Posting Date:
27-Oct-2011
Date of Publication:
27-Oct-2011
Conference Host:
Southern Nursing Research Society
Note:
This is an abstract-only submission. If the author has submitted a full-text item based on this abstract, you may find it by browsing the Virginia Henderson Global Nursing e-Repository by author. If author contact information is available in this abstract, please feel free to contact him or her with your queries regarding this submission. Alternatively, please contact the conference host, journal, or publisher (according to the circumstance) for further details regarding this item. If a citation is listed in this record, the item has been published and is available via open-access avenues or a journal/database subscription. Contact your library for assistance in obtaining the as-published article.

Full metadata record

DC FieldValue Language
dc.type.categoryAbstracten_US
dc.typePresentationen_GB
dc.titleValidating Estimates Of Regional Fat In Mexican American Womenen_GB
dc.contributor.authorKeller, Colleenen_US
dc.author.detailsColleen Keller, PhD, Professor, University of Texas Health Science Center at San Antonio School of Nursing, San Antonio, Texas, USA, email: kellercs@uthscsa.eduen_US
dc.identifier.urihttp://hdl.handle.net/10755/166096-
dc.description.abstractBackground: population studies show strong correlations between abdominal distribution of adipose tissue and established risk factors for cardiovascular disease. Body fat distribution (BFD) estimates must be reliably and safely done with a minimum of equipment cost and risk to the individual. Indirect anthropometric measures offer a non-invasive, safe method of estimating BFD and have been shown to reliably parallel CT estimates in Black and white non-Hispanic women. Specific Aim: to determine the reliability and validity of four indirect measures of BFD by comparing and contrasting sagittal abdominal diameter/thigh ratio index (SDI) sagittal abdominal diameter (SAD), waist-hip ratio (WHR), and waist-thigh ratio (WTR) to computerized tomography (CT) measurement in Mexican-American women. Methods: Fifty outpatient Mexican-American women between the ages of 18 and 65 (M = 47.3) undergoing elective, diagnostic abdominal computerized tomography comprised the sample. Women undergoing CT for undifferentiated abdominal pain, abnormal liver function, hematuria, etc. were recruited; women whose CT reports abdominal mass or other pathology resulting in alteration of the abdominal integrity or who have underlying pathology affecting fat distribution were excluded. SAD was measured with the Holtain-Kahn SAD caliper in the reclining position. Thigh girth was measured one half way between the inguinal crease and the patella, taken in the reclining patient. Waist-hip measurements were obtained with a fiberglass tape measure; the waist circumference was measured at the narrowest spot between the ribs and hips, or when a narrow point was not evident, the midpoint between the lowest rib and the iliac crest. The hip circumference was measured at the widest circumference. The WHR was taken in both the standing and supine position. The CT scans were obtained using a Tomscan 60 TX (Phillips Medical System) and GE Helical CT Unit (General Electric Medical Systems), using 120 kv, 5 or 10 mm slices with appropriate mA, exposure time, and field of view. Axial CT measurements of at least three slices at L-4 and L-5 of 7mm interscan distance were obtained from abdominal CT images the L-4 level corresponds to the umbilicus level where waist circumference is usually measured. Results: The correlation between the CT SAD and the caliper SAD was 0.89 (p< .001), demonstrating that the external measure of regional fat closely approximated that of the CT measure of regional fat. The body mass index, an estimation of body fatness, was correlated with both the caliper SAD and the CT SAD r = 0.70 (p< .001) and r = 0.82 (p< .001) respectively. Thus, the external measure of the SAD provides a reliable estimate of regional fat distribution.en_GB
dc.date.available2011-10-27T14:40:07Z-
dc.date.issued2011-10-27en_GB
dc.date.accessioned2011-10-27T14:40:07Z-
dc.conference.hostSouthern Nursing Research Societyen_US
dc.description.noteThis is an abstract-only submission. If the author has submitted a full-text item based on this abstract, you may find it by browsing the Virginia Henderson Global Nursing e-Repository by author. If author contact information is available in this abstract, please feel free to contact him or her with your queries regarding this submission. Alternatively, please contact the conference host, journal, or publisher (according to the circumstance) for further details regarding this item. If a citation is listed in this record, the item has been published and is available via open-access avenues or a journal/database subscription. Contact your library for assistance in obtaining the as-published article.-
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