Precision of the iDXA for Visceral Adipose Tissue Measurement in Severely Obese Patients
A new measurement tool, the automated software CoreScan, for the GE Lunar iDXA, has been validated for measuring visceral adipose tissue (VAT) against computed tomography in normal-weight populations. However, no study has evaluated the precision of CoreScan in measuring VAT among severely obese pat...
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Veröffentlicht in: | Medicine and science in sports and exercise 2014-07, Vol.46 (7), p.1462-1465 |
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creator | CARVER, TAMARA E COURT, OLIVIER CHRISTOU, NICOLAS V REID, RYAN E R ANDERSEN, ROSS E |
description | A new measurement tool, the automated software CoreScan, for the GE Lunar iDXA, has been validated for measuring visceral adipose tissue (VAT) against computed tomography in normal-weight populations. However, no study has evaluated the precision of CoreScan in measuring VAT among severely obese patients.
PURPOSEThe purpose of the study was to evaluate the precision of CoreScan for VAT measurements in severely obese adults (body mass index > 40 kg·m).
METHODSA total of 55 obese participants with a mean age of 46 ± 11 yr, body mass index of 49 ± 6 kg·m, and body mass of 137.3 ± 21.3 kg took part in this study. Two consecutive iDXA scans with repositioning of the total body were conducted for each participant. The coefficient of variation, the root-mean-square averages of SD of repeated measurements, the corresponding 95% least significant change, and intraclass correlations were calculated.
RESULTSPrecision error was 8.77% (percent coefficient of variation), with a root-mean-square SD of 0.294 kg and an intraclass correlation of 0.96. Bland–Altman plots demonstrated a mean precision bias of −0.08 ± 0.41 kg, giving a coefficient of repeatability of 0.82 kg and a bias range of −0.890 to 0.725 kg.
CONCLUSIONSWhen interpreting VAT results with the iDXA in severely obese populations, clinicians should be aware of the precision error for this important clinical parameter. |
doi_str_mv | 10.1249/MSS.0000000000000238 |
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PURPOSEThe purpose of the study was to evaluate the precision of CoreScan for VAT measurements in severely obese adults (body mass index > 40 kg·m).
METHODSA total of 55 obese participants with a mean age of 46 ± 11 yr, body mass index of 49 ± 6 kg·m, and body mass of 137.3 ± 21.3 kg took part in this study. Two consecutive iDXA scans with repositioning of the total body were conducted for each participant. The coefficient of variation, the root-mean-square averages of SD of repeated measurements, the corresponding 95% least significant change, and intraclass correlations were calculated.
RESULTSPrecision error was 8.77% (percent coefficient of variation), with a root-mean-square SD of 0.294 kg and an intraclass correlation of 0.96. Bland–Altman plots demonstrated a mean precision bias of −0.08 ± 0.41 kg, giving a coefficient of repeatability of 0.82 kg and a bias range of −0.890 to 0.725 kg.
CONCLUSIONSWhen interpreting VAT results with the iDXA in severely obese populations, clinicians should be aware of the precision error for this important clinical parameter.</description><identifier>ISSN: 0195-9131</identifier><identifier>EISSN: 1530-0315</identifier><identifier>DOI: 10.1249/MSS.0000000000000238</identifier><identifier>PMID: 24389525</identifier><identifier>CODEN: MSPEDA</identifier><language>eng</language><publisher>Hagerstown, MD: American College of Sports Medicine</publisher><subject>Absorptiometry, Photon - methods ; Adult ; Aged ; Biological and medical sciences ; Female ; Fundamental and applied biological sciences. Psychology ; Human physiology applied to population studies and life conditions. Human ecophysiology ; Humans ; Intra-Abdominal Fat - diagnostic imaging ; Male ; Medical sciences ; Metabolic diseases ; Middle Aged ; Obesity ; Obesity, Morbid - diagnostic imaging ; Reproducibility of Results ; Software ; Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports ; Young Adult</subject><ispartof>Medicine and science in sports and exercise, 2014-07, Vol.46 (7), p.1462-1465</ispartof><rights>2014 American College of Sports Medicine</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3868-e7d0adeb0e87a6f24aa9ffdb7de0588abc3a09d2220be13932659710ae1d657d3</citedby><cites>FETCH-LOGICAL-c3868-e7d0adeb0e87a6f24aa9ffdb7de0588abc3a09d2220be13932659710ae1d657d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28600825$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24389525$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>CARVER, TAMARA E</creatorcontrib><creatorcontrib>COURT, OLIVIER</creatorcontrib><creatorcontrib>CHRISTOU, NICOLAS V</creatorcontrib><creatorcontrib>REID, RYAN E R</creatorcontrib><creatorcontrib>ANDERSEN, ROSS E</creatorcontrib><title>Precision of the iDXA for Visceral Adipose Tissue Measurement in Severely Obese Patients</title><title>Medicine and science in sports and exercise</title><addtitle>Med Sci Sports Exerc</addtitle><description>A new measurement tool, the automated software CoreScan, for the GE Lunar iDXA, has been validated for measuring visceral adipose tissue (VAT) against computed tomography in normal-weight populations. However, no study has evaluated the precision of CoreScan in measuring VAT among severely obese patients.
PURPOSEThe purpose of the study was to evaluate the precision of CoreScan for VAT measurements in severely obese adults (body mass index > 40 kg·m).
METHODSA total of 55 obese participants with a mean age of 46 ± 11 yr, body mass index of 49 ± 6 kg·m, and body mass of 137.3 ± 21.3 kg took part in this study. Two consecutive iDXA scans with repositioning of the total body were conducted for each participant. The coefficient of variation, the root-mean-square averages of SD of repeated measurements, the corresponding 95% least significant change, and intraclass correlations were calculated.
RESULTSPrecision error was 8.77% (percent coefficient of variation), with a root-mean-square SD of 0.294 kg and an intraclass correlation of 0.96. Bland–Altman plots demonstrated a mean precision bias of −0.08 ± 0.41 kg, giving a coefficient of repeatability of 0.82 kg and a bias range of −0.890 to 0.725 kg.
CONCLUSIONSWhen interpreting VAT results with the iDXA in severely obese populations, clinicians should be aware of the precision error for this important clinical parameter.</description><subject>Absorptiometry, Photon - methods</subject><subject>Adult</subject><subject>Aged</subject><subject>Biological and medical sciences</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Human physiology applied to population studies and life conditions. Human ecophysiology</subject><subject>Humans</subject><subject>Intra-Abdominal Fat - diagnostic imaging</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Metabolic diseases</subject><subject>Middle Aged</subject><subject>Obesity</subject><subject>Obesity, Morbid - diagnostic imaging</subject><subject>Reproducibility of Results</subject><subject>Software</subject><subject>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports</subject><subject>Young Adult</subject><issn>0195-9131</issn><issn>1530-0315</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kE1P4zAQhi0Egi7sP0DIFyQuKf6IE-dYAbsgFYFUWHGLJvFENbhJsRMq_v0aWj60h53LHOaZmVcPIYecjblIi9Pr2WzMvpeQeouMuJIsYZKrbTJivFBJwSXfIz9CeIxMLiXfJXsilbpQQo3Iw63H2gbbtbRraD9Has8fJrTpPP1jQ40eHJ0Yu-wC0jsbwoD0GiEMHhfY9tS2dIYv6NG90psKI3QLvY2TcEB2GnABf276Prn_dXF3dplMb35fnU2mSS11phPMDQODFUOdQ9aIFKBoGlPlBpnSGqpaAiuMEIJVyGUhRaaKnDNAbjKVG7lPTtZ3l757HjD05eItt3PQYjeEMvrIuVY6lRFN12jtuxA8NuXS2wX415Kz8s1pGZ2W_zqNa0ebD0O1QPO59CExAscbAEINrvHQRqVfnM4Y0--cXnOrzvXow5MbVujLOYLr5__P8BcZU4-t</recordid><startdate>201407</startdate><enddate>201407</enddate><creator>CARVER, TAMARA E</creator><creator>COURT, OLIVIER</creator><creator>CHRISTOU, NICOLAS V</creator><creator>REID, RYAN E R</creator><creator>ANDERSEN, ROSS E</creator><general>American College of Sports Medicine</general><general>Lippincott Williams & Wilkins</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>201407</creationdate><title>Precision of the iDXA for Visceral Adipose Tissue Measurement in Severely Obese Patients</title><author>CARVER, TAMARA E ; COURT, OLIVIER ; CHRISTOU, NICOLAS V ; REID, RYAN E R ; ANDERSEN, ROSS E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3868-e7d0adeb0e87a6f24aa9ffdb7de0588abc3a09d2220be13932659710ae1d657d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Absorptiometry, Photon - methods</topic><topic>Adult</topic><topic>Aged</topic><topic>Biological and medical sciences</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Human physiology applied to population studies and life conditions. Human ecophysiology</topic><topic>Humans</topic><topic>Intra-Abdominal Fat - diagnostic imaging</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Metabolic diseases</topic><topic>Middle Aged</topic><topic>Obesity</topic><topic>Obesity, Morbid - diagnostic imaging</topic><topic>Reproducibility of Results</topic><topic>Software</topic><topic>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>CARVER, TAMARA E</creatorcontrib><creatorcontrib>COURT, OLIVIER</creatorcontrib><creatorcontrib>CHRISTOU, NICOLAS V</creatorcontrib><creatorcontrib>REID, RYAN E R</creatorcontrib><creatorcontrib>ANDERSEN, ROSS E</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Medicine and science in sports and exercise</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>CARVER, TAMARA E</au><au>COURT, OLIVIER</au><au>CHRISTOU, NICOLAS V</au><au>REID, RYAN E R</au><au>ANDERSEN, ROSS E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Precision of the iDXA for Visceral Adipose Tissue Measurement in Severely Obese Patients</atitle><jtitle>Medicine and science in sports and exercise</jtitle><addtitle>Med Sci Sports Exerc</addtitle><date>2014-07</date><risdate>2014</risdate><volume>46</volume><issue>7</issue><spage>1462</spage><epage>1465</epage><pages>1462-1465</pages><issn>0195-9131</issn><eissn>1530-0315</eissn><coden>MSPEDA</coden><abstract>A new measurement tool, the automated software CoreScan, for the GE Lunar iDXA, has been validated for measuring visceral adipose tissue (VAT) against computed tomography in normal-weight populations. However, no study has evaluated the precision of CoreScan in measuring VAT among severely obese patients.
PURPOSEThe purpose of the study was to evaluate the precision of CoreScan for VAT measurements in severely obese adults (body mass index > 40 kg·m).
METHODSA total of 55 obese participants with a mean age of 46 ± 11 yr, body mass index of 49 ± 6 kg·m, and body mass of 137.3 ± 21.3 kg took part in this study. Two consecutive iDXA scans with repositioning of the total body were conducted for each participant. The coefficient of variation, the root-mean-square averages of SD of repeated measurements, the corresponding 95% least significant change, and intraclass correlations were calculated.
RESULTSPrecision error was 8.77% (percent coefficient of variation), with a root-mean-square SD of 0.294 kg and an intraclass correlation of 0.96. Bland–Altman plots demonstrated a mean precision bias of −0.08 ± 0.41 kg, giving a coefficient of repeatability of 0.82 kg and a bias range of −0.890 to 0.725 kg.
CONCLUSIONSWhen interpreting VAT results with the iDXA in severely obese populations, clinicians should be aware of the precision error for this important clinical parameter.</abstract><cop>Hagerstown, MD</cop><pub>American College of Sports Medicine</pub><pmid>24389525</pmid><doi>10.1249/MSS.0000000000000238</doi><tpages>4</tpages></addata></record> |
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subjects | Absorptiometry, Photon - methods Adult Aged Biological and medical sciences Female Fundamental and applied biological sciences. Psychology Human physiology applied to population studies and life conditions. Human ecophysiology Humans Intra-Abdominal Fat - diagnostic imaging Male Medical sciences Metabolic diseases Middle Aged Obesity Obesity, Morbid - diagnostic imaging Reproducibility of Results Software Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports Young Adult |
title | Precision of the iDXA for Visceral Adipose Tissue Measurement in Severely Obese Patients |
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