Articles producció científica> Medicina i Cirurgia

A novel approach to assess body composition in children with obesity from density of the fat-free mass

  • Identification data

    Identifier: imarina:9002318
    Authors:
    Gutierrez-Marin, DesireeEscribano, JoaquinClosa-Monasterolo, RicardoFerre, NataliaVenables, MichelleSingh, PriyaWells, Jonathan C KMunoz-Hernando, JuditZaragoza-Jordana, MartaGispert-Llaurado, MarionaRubio-Torrents, CarmenAlcazar, MireiaNunez-Roig, MerceMonne-Gelonch, RaquelFeliu, AlbertBasora, JosepAlejos, Ana MLuque, Veronica
    Abstract:
    Background & aimsAssessment of Fat Mass (FM) and fat-free mass (FFM) using Air-displacement plethysmography (ADP) technique assumes constant density of FFM (DFFM) by age and sex. It has been recently shown that DFFM further varies according to body mass index (BMI), meaning that ADP body composition assessments of children with obesity could be biased if DFFM is assumed to be constant. The aim of this study was to validate the use of the calculations of DFFM (rather than constant density of the FFM) to improve accuracy of body composition assessment in children with obesity.Methodscross-sectional validation study in 66 children with obesity (aged 8-14 years) where ADP assessments of body composition assuming constant density (FFMBODPOD and FMBODPOD) were compared to those where DFFM was adjusted in relation to BMI (FFMadjusted and FMadjusted), and both compared to the gold standard reference, the 4-component model (FFM4C and FM4C).ResultsFFMBODPOD was overestimated by 1.50 kg (95%CI -0.68 kg, 3.63 kg) while FFMadjusted was 0.71 kg (-1.08 kg, 2.51 kg) (percentage differences compared to FFM4C were 4.9% (±2.9%) and 2.8% (±2.1%), respectively (p < 0.001)). Consistently, FM was underestimated by both methods, representing a mean difference between methods of 4.0% (±2.9%) and 6.8% (±3.8%), respectively, when compared to the reference method. The agreement and reliability of body composition assessments were improved when adjusted using calculations (adjusted models) rather than assuming constant DFFM.ConclusionsThe use of constant values for fat-free mass properties may increase bias when assessing body compositi
  • Others:

    Author, as appears in the article.: Gutierrez-Marin, Desiree; Escribano, Joaquin; Closa-Monasterolo, Ricardo; Ferre, Natalia; Venables, Michelle; Singh, Priya; Wells, Jonathan C K; Munoz-Hernando, Judit; Zaragoza-Jordana, Marta; Gispert-Llaurado, Mariona; Rubio-Torrents, Carmen; Alcazar, Mireia; Nunez-Roig, Merce; Monne-Gelonch, Raquel; Feliu, Albert; Basora, Josep; Alejos, Ana M; Luque, Veronica
    Department: Medicina i Cirurgia
    URV's Author/s: Alcázar López, Mireia / Closa Monasterolo, Ricardo / Escribano Subías, Joaquín / Feliu Rovira, Albert / Ferre Pallas, Natalia / Gispert Llauradó, Mariona / GUTIÉRREZ MARÍN, DESIRÉE / Luque Moreno, Verònica / Muñoz Hernando, Judit / RUBIO TORRENTS, MARÍA DEL CARMEN / Zaragoza Jordana, Marta
    Keywords: Validation study Statistical bias Sex difference Reproducibility of results Reproducibility Randomized controlled trials as topic Randomized controlled trial (topic) Procedures Plethysmography Pediatric obesity Obesity Measurement precision Measurement accuracy Male Humans Human Female Fat free mass Diagnostic imaging Density Cross-sectional study Cross-sectional studies Controlled study Comparative study Cluster analysis Clinical feature Clinical assessment Children Childhood obesity Child Body mass index Body mass Body composition Bias Article Anthropometry Air displacement plethysmography Age Adolescent Adipose tissue
    Abstract: Background & aimsAssessment of Fat Mass (FM) and fat-free mass (FFM) using Air-displacement plethysmography (ADP) technique assumes constant density of FFM (D<sub>FFM</sub>) by age and sex. It has been recently shown that D<sub>FFM</sub> further varies according to body mass index (BMI), meaning that ADP body composition assessments of children with obesity could be biased if D<sub>FFM</sub> is assumed to be constant. The aim of this study was to validate the use of the calculations of D<sub>FFM</sub> (rather than constant density of the FFM) to improve accuracy of body composition assessment in children with obesity.Methodscross-sectional validation study in 66 children with obesity (aged 8-14 years) where ADP assessments of body composition assuming constant density (FFM<sub>BODPOD</sub> and FM<sub>BODPOD)</sub> were compared to those where D<sub>FFM</sub> was adjusted in relation to BMI (FFM<sub>adjusted</sub> and FM<sub>adjusted</sub>), and both compared to the gold standard reference, the 4-component model (FFM<sub>4C</sub> and FM<sub>4C</sub>).ResultsFFM<sub>BODPOD</sub> was overestimated by 1.50 kg (95%CI -0.68 kg, 3.63 kg) while FFM<sub>adjusted</sub> was 0.71 kg (-1.08 kg, 2.51 kg) (percentage differences compared to FFM<sub>4C</sub> were 4.9% (±2.9%) and 2.8% (±2.1%), respectively (p < 0.001)). Consistently, FM was underestimated by both methods, representing a mean difference between methods of 4.0% (±2.9%) and 6.8% (±3.8%), respectively, when compared to the reference method. The agreement and reliability of body composition assessments were improved when adjusted using calculations (adjusted models) rather than assuming constant D<sub>FFM</sub>.ConclusionsThe use of constant values for fat-free mass properties may increase bias when assessing body composition (FM and FFM) in children with obesity by two-component techniques such as ADP. Using adjusted corrections as proposed in the present work may reduce the bias by half.
    Thematic Areas: Saúde coletiva Química Odontología Nutrition and dietetics Nutrition & dietetics Nutrição Medicina iii Medicina ii Medicina i Interdisciplinar General medicine Farmacia Engenharias iv Enfermagem Educação física Critical care and intensive care medicine Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciência de alimentos Biotecnología
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: veronica.luque@urv.cat mariona.gispert@urv.cat mariona.gispert@urv.cat marta.zaragoza@urv.cat marta.zaragoza@urv.cat albert.feliu@urv.cat judit.munoz@urv.cat judit.munoz@urv.cat judit.munoz@urv.cat ricardo.closa@urv.cat mireia.alcazar@urv.cat natalia.ferre@urv.cat joaquin.escribano@urv.cat
    Author identifier: 0000-0003-2615-8175 0000-0002-9963-4163 0000-0001-9813-4645 0000-0002-2838-1525 0000-0002-5041-459X
    Record's date: 2024-09-21
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.clinicalnutritionjournal.com/article/S0261-5614(20)30362-9/fulltext
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Clinical Nutrition. 40 (3): 1102-1107
    APA: Gutierrez-Marin, Desiree; Escribano, Joaquin; Closa-Monasterolo, Ricardo; Ferre, Natalia; Venables, Michelle; Singh, Priya; Wells, Jonathan C K; Munoz (2021). A novel approach to assess body composition in children with obesity from density of the fat-free mass. Clinical Nutrition, 40(3), 1102-1107. DOI: 10.1016/j.clnu.2020.07.011
    Article's DOI: 10.1016/j.clnu.2020.07.011
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2021
    Publication Type: Journal Publications
  • Keywords:

    Critical Care and Intensive Care Medicine,Nutrition & Dietetics,Nutrition and Dietetics
    Validation study
    Statistical bias
    Sex difference
    Reproducibility of results
    Reproducibility
    Randomized controlled trials as topic
    Randomized controlled trial (topic)
    Procedures
    Plethysmography
    Pediatric obesity
    Obesity
    Measurement precision
    Measurement accuracy
    Male
    Humans
    Human
    Female
    Fat free mass
    Diagnostic imaging
    Density
    Cross-sectional study
    Cross-sectional studies
    Controlled study
    Comparative study
    Cluster analysis
    Clinical feature
    Clinical assessment
    Children
    Childhood obesity
    Child
    Body mass index
    Body mass
    Body composition
    Bias
    Article
    Anthropometry
    Air displacement plethysmography
    Age
    Adolescent
    Adipose tissue
    Saúde coletiva
    Química
    Odontología
    Nutrition and dietetics
    Nutrition & dietetics
    Nutrição
    Medicina iii
    Medicina ii
    Medicina i
    Interdisciplinar
    General medicine
    Farmacia
    Engenharias iv
    Enfermagem
    Educação física
    Critical care and intensive care medicine
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciência de alimentos
    Biotecnología
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