Validity of bioelectrical-impedance analysis in measuring changes in lean body mass during weight reduction
The aim of this study was to investigate the validity of bioelectrical-impedance analysis (BIA) in measuring changes in lean body mass (LBM) that occur in the treatment of obesity with very-low-calorie diets (VLCDs). Resistance (R), reactance (Xc), and nitrogen balance (BN) were measured for 28 cons...
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| Veröffentlicht in: | The American journal of clinical nutrition 1991-12, Vol.54 (6), p.970-975 |
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| creator | Vazquez, JA Janosky, JE |
| description | The aim of this study was to investigate the validity of bioelectrical-impedance analysis (BIA) in measuring changes in lean body mass (LBM) that occur in the treatment of obesity with very-low-calorie diets (VLCDs). Resistance (R), reactance (Xc), and nitrogen balance (BN) were measured for 28 consecutive days in 16 obese women consuming isocaloric and isonitrogenous ketogenic and nonketogenic liquid VLCDs while housed in a metabolic ward. Changes in LBM were calculated by using eight BIA-predictive equations and from cumulative BN. Changes in LBM calculated by BNwere larger in the ketogenic than in the nonketogenic diet (1.5 ± 0.1 vs 0.6 ± 0.2 kg/ 28 d,P< 0.05). Neither R nor Xcchanged significantly during treatment with either diet but each equation showed losses of LBM with time. All the equations overestimated the losses in LBM calculated by BN. BIA does not appear to be a valid method for measuring the small losses in LBM that occur during treatment of obesity with VLCDs. |
| doi_str_mv | 10.1093/ajcn/54.6.970 |
| format | Article |
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Resistance (R), reactance (Xc), and nitrogen balance (BN) were measured for 28 consecutive days in 16 obese women consuming isocaloric and isonitrogenous ketogenic and nonketogenic liquid VLCDs while housed in a metabolic ward. Changes in LBM were calculated by using eight BIA-predictive equations and from cumulative BN. Changes in LBM calculated by BNwere larger in the ketogenic than in the nonketogenic diet (1.5 ± 0.1 vs 0.6 ± 0.2 kg/ 28 d,P< 0.05). Neither R nor Xcchanged significantly during treatment with either diet but each equation showed losses of LBM with time. All the equations overestimated the losses in LBM calculated by BN. BIA does not appear to be a valid method for measuring the small losses in LBM that occur during treatment of obesity with VLCDs.</description><identifier>ISSN: 0002-9165</identifier><identifier>EISSN: 1938-3207</identifier><identifier>DOI: 10.1093/ajcn/54.6.970</identifier><identifier>PMID: 1957829</identifier><identifier>CODEN: AJCNAC</identifier><language>eng</language><publisher>Bethesda, MD: Elsevier Inc</publisher><subject>Biological and medical sciences ; Body Composition ; Body Mass Index ; CETOSE ; CETOSIS ; Diet, Reducing ; DIETA TERAPEUTICA ; Electrophysiology - methods ; Female ; FEMME ; Humans ; ketosis ; Medical sciences ; Metabolic diseases ; METABOLISME DE L'AZOTE ; METABOLISMO DEL NITROGENO ; MUJERES ; Nitrogen - metabolism ; Nitrogen balance ; Obesity ; Obesity - diet therapy ; PESO ; POIDS ; POTENCIAL ELECTRICO ; POTENTIEL ELECTRIQUE ; PROPIEDADES FISICO-QUIMICAS ; PROPRIETE PHYSICOCHIMIQUE ; REDUCCION DEL PESO ; REGIME ALIMENTAIRE THERAPEUTIQUE ; REGIME POUR REDUCTION DE POIDS ; SOBREPESO ; SURPOIDS ; very-low-calorie diets</subject><ispartof>The American journal of clinical nutrition, 1991-12, Vol.54 (6), p.970-975</ispartof><rights>1991 American Society for Nutrition.</rights><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c423t-aac459ade1d00b6a0ea5bdd7f10c075892a7b1327c05e98c603b9376593142953</citedby><cites>FETCH-LOGICAL-c423t-aac459ade1d00b6a0ea5bdd7f10c075892a7b1327c05e98c603b9376593142953</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,780,784,789,790,23928,23929,25138,27922,27923</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5213382$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/1957829$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Vazquez, JA</creatorcontrib><creatorcontrib>Janosky, JE</creatorcontrib><title>Validity of bioelectrical-impedance analysis in measuring changes in lean body mass during weight reduction</title><title>The American journal of clinical nutrition</title><addtitle>Am J Clin Nutr</addtitle><description>The aim of this study was to investigate the validity of bioelectrical-impedance analysis (BIA) in measuring changes in lean body mass (LBM) that occur in the treatment of obesity with very-low-calorie diets (VLCDs). Resistance (R), reactance (Xc), and nitrogen balance (BN) were measured for 28 consecutive days in 16 obese women consuming isocaloric and isonitrogenous ketogenic and nonketogenic liquid VLCDs while housed in a metabolic ward. Changes in LBM were calculated by using eight BIA-predictive equations and from cumulative BN. Changes in LBM calculated by BNwere larger in the ketogenic than in the nonketogenic diet (1.5 ± 0.1 vs 0.6 ± 0.2 kg/ 28 d,P< 0.05). Neither R nor Xcchanged significantly during treatment with either diet but each equation showed losses of LBM with time. All the equations overestimated the losses in LBM calculated by BN. BIA does not appear to be a valid method for measuring the small losses in LBM that occur during treatment of obesity with VLCDs.</description><subject>Biological and medical sciences</subject><subject>Body Composition</subject><subject>Body Mass Index</subject><subject>CETOSE</subject><subject>CETOSIS</subject><subject>Diet, Reducing</subject><subject>DIETA TERAPEUTICA</subject><subject>Electrophysiology - methods</subject><subject>Female</subject><subject>FEMME</subject><subject>Humans</subject><subject>ketosis</subject><subject>Medical sciences</subject><subject>Metabolic diseases</subject><subject>METABOLISME DE L'AZOTE</subject><subject>METABOLISMO DEL NITROGENO</subject><subject>MUJERES</subject><subject>Nitrogen - metabolism</subject><subject>Nitrogen balance</subject><subject>Obesity</subject><subject>Obesity - diet therapy</subject><subject>PESO</subject><subject>POIDS</subject><subject>POTENCIAL ELECTRICO</subject><subject>POTENTIEL ELECTRIQUE</subject><subject>PROPIEDADES FISICO-QUIMICAS</subject><subject>PROPRIETE PHYSICOCHIMIQUE</subject><subject>REDUCCION DEL PESO</subject><subject>REGIME ALIMENTAIRE THERAPEUTIQUE</subject><subject>REGIME POUR REDUCTION DE POIDS</subject><subject>SOBREPESO</subject><subject>SURPOIDS</subject><subject>very-low-calorie diets</subject><issn>0002-9165</issn><issn>1938-3207</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kU1v1DAQhi1EVZbCkQsSkg-IW7b-iOP4iKryIVXqoZSrNbEnW5fEWewEtP--XrKCE6eR5n00Gj0vIW8423Jm5CU8unip6m2zNZo9IxtuZFtJwfRzsmGMicrwRr0gL3N-ZIyLum3OyTk3SrfCbMiP7zAEH-YDnXrahQkHdHMKDoYqjHv0EB1SiDAccsg0RDoi5CWFuKPuAeIO_ywHhEi7yR_oCDlTvwK_MeweZprQL24OU3xFznoYMr4-zQty_-n629WX6ub289erjzeVq4WcKwBXKwMeuWesa4AhqM573XPmmFatEaA7LoV2TKFpXcNkZ6RulJG8FkbJC_JhvbtP088F82zHkB0OA0Sclmx1kdC2si5gtYIuTTkn7O0-hRHSwXJmj3LtUa5VtW1skVv4d6fDSzei_0evNkv-_pRDLgb7VOyF_BdTgkvZioK9XbEeJgu7VJD7O8M1E_z4k15DLIZ-BUw2u4ClBR9Sqcb6KfznuyevKp6_</recordid><startdate>19911201</startdate><enddate>19911201</enddate><creator>Vazquez, JA</creator><creator>Janosky, JE</creator><general>Elsevier Inc</general><general>American Society for Clinical Nutrition</general><scope>FBQ</scope><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>19911201</creationdate><title>Validity of bioelectrical-impedance analysis in measuring changes in lean body mass during weight reduction</title><author>Vazquez, JA ; Janosky, JE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c423t-aac459ade1d00b6a0ea5bdd7f10c075892a7b1327c05e98c603b9376593142953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Biological and medical sciences</topic><topic>Body Composition</topic><topic>Body Mass Index</topic><topic>CETOSE</topic><topic>CETOSIS</topic><topic>Diet, Reducing</topic><topic>DIETA TERAPEUTICA</topic><topic>Electrophysiology - methods</topic><topic>Female</topic><topic>FEMME</topic><topic>Humans</topic><topic>ketosis</topic><topic>Medical sciences</topic><topic>Metabolic diseases</topic><topic>METABOLISME DE L'AZOTE</topic><topic>METABOLISMO DEL NITROGENO</topic><topic>MUJERES</topic><topic>Nitrogen - metabolism</topic><topic>Nitrogen balance</topic><topic>Obesity</topic><topic>Obesity - diet therapy</topic><topic>PESO</topic><topic>POIDS</topic><topic>POTENCIAL ELECTRICO</topic><topic>POTENTIEL ELECTRIQUE</topic><topic>PROPIEDADES FISICO-QUIMICAS</topic><topic>PROPRIETE PHYSICOCHIMIQUE</topic><topic>REDUCCION DEL PESO</topic><topic>REGIME ALIMENTAIRE THERAPEUTIQUE</topic><topic>REGIME POUR REDUCTION DE POIDS</topic><topic>SOBREPESO</topic><topic>SURPOIDS</topic><topic>very-low-calorie diets</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vazquez, JA</creatorcontrib><creatorcontrib>Janosky, JE</creatorcontrib><collection>AGRIS</collection><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>The American journal of clinical nutrition</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vazquez, JA</au><au>Janosky, JE</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Validity of bioelectrical-impedance analysis in measuring changes in lean body mass during weight reduction</atitle><jtitle>The American journal of clinical nutrition</jtitle><addtitle>Am J Clin Nutr</addtitle><date>1991-12-01</date><risdate>1991</risdate><volume>54</volume><issue>6</issue><spage>970</spage><epage>975</epage><pages>970-975</pages><issn>0002-9165</issn><eissn>1938-3207</eissn><coden>AJCNAC</coden><abstract>The aim of this study was to investigate the validity of bioelectrical-impedance analysis (BIA) in measuring changes in lean body mass (LBM) that occur in the treatment of obesity with very-low-calorie diets (VLCDs). Resistance (R), reactance (Xc), and nitrogen balance (BN) were measured for 28 consecutive days in 16 obese women consuming isocaloric and isonitrogenous ketogenic and nonketogenic liquid VLCDs while housed in a metabolic ward. Changes in LBM were calculated by using eight BIA-predictive equations and from cumulative BN. Changes in LBM calculated by BNwere larger in the ketogenic than in the nonketogenic diet (1.5 ± 0.1 vs 0.6 ± 0.2 kg/ 28 d,P< 0.05). Neither R nor Xcchanged significantly during treatment with either diet but each equation showed losses of LBM with time. All the equations overestimated the losses in LBM calculated by BN. BIA does not appear to be a valid method for measuring the small losses in LBM that occur during treatment of obesity with VLCDs.</abstract><cop>Bethesda, MD</cop><pub>Elsevier Inc</pub><pmid>1957829</pmid><doi>10.1093/ajcn/54.6.970</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | MEDLINE; Alma/SFX Local Collection |
| subjects | Biological and medical sciences Body Composition Body Mass Index CETOSE CETOSIS Diet, Reducing DIETA TERAPEUTICA Electrophysiology - methods Female FEMME Humans ketosis Medical sciences Metabolic diseases METABOLISME DE L'AZOTE METABOLISMO DEL NITROGENO MUJERES Nitrogen - metabolism Nitrogen balance Obesity Obesity - diet therapy PESO POIDS POTENCIAL ELECTRICO POTENTIEL ELECTRIQUE PROPIEDADES FISICO-QUIMICAS PROPRIETE PHYSICOCHIMIQUE REDUCCION DEL PESO REGIME ALIMENTAIRE THERAPEUTIQUE REGIME POUR REDUCTION DE POIDS SOBREPESO SURPOIDS very-low-calorie diets |
| title | Validity of bioelectrical-impedance analysis in measuring changes in lean body mass during weight reduction |
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