The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis

Kaweesak Chittawatanarat1,2, Sakda Pruenglampoo3, Siriphan Kongsawasdi4, Busaba Chuatrakoon4, Vibul Trakulhoon5, Winai Ungpinitpong6, Jayanton Patumanond21Department of Surgery, Faculty of Medicine, 2Clinical Epidemiology Unit, 3Research Institute for Health Sciences, 4Department of Physical Therapy...

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Autores principales:	Chittawatanarat K, Pruenglampoo S, Kongsawasdi S, Chuatrakoon B, Trakulhoon V, Ungpinitpong W, Patumanond J
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2011
Materias:	fat mass fat free mass age body mass index Thai Geriatrics RC952-954.6
Acceso en línea:	https://doaj.org/article/7f0af236182b41f09a8fc4c86a9dcc3d
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spelling	oai:doaj.org-article:7f0af236182b41f09a8fc4c86a9dcc3d2021-12-02T04:04:18ZThe variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis1178-1998https://doaj.org/article/7f0af236182b41f09a8fc4c86a9dcc3d2011-11-01T00:00:00Zhttps://www.dovepress.com/the-variations-of-body-mass-index-and-body-fat-in-adult-thai-people-ac-peer-reviewed-article-CIAhttps://doaj.org/toc/1178-1998Kaweesak Chittawatanarat1,2, Sakda Pruenglampoo3, Siriphan Kongsawasdi4, Busaba Chuatrakoon4, Vibul Trakulhoon5, Winai Ungpinitpong6, Jayanton Patumanond21Department of Surgery, Faculty of Medicine, 2Clinical Epidemiology Unit, 3Research Institute for Health Sciences, 4Department of Physical Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 5Department of Surgery, Bhumibol Adulyadej Hospital, Bangkok, 6Surgical Unit, Surin Hospital, Surin, ThailandBackground: The measurements of body mass index (BMI) and percentage of body fat are used in many clinical situations. However, special tools are required to measure body fat. Many formulas are proposed for estimation but these use constant coefficients of age. Age spectrum might affect the predicted value of the body composition due to body component alterations, and the coefficient of age for body fat prediction might produce inconsistent results. The objective of this study was to identify variations of BMI and body fat across the age spectrum as well as compare results between BMI predicted body fat and bioelectrical impedance results on age.Methods: Healthy volunteers were recruited for this study. Body fat was measured by bioelectrical impedance. The age spectrum was divided into three groups (younger: 18–39.9; middle: 40–59.9; and older: ≥60 years). Comparison of body composition covariates including fat mass (FM), fat free mass (FFM), percentage FM (PFM), percentage FFM (PFFM), FM index (FMI) and FFM index (FFMI) in each weight status and age spectrum were analyzed. Multivariable linear regression coefficients were calculated. Coefficient alterations among age groups were tested to confirm the effect of the age spectrum on body composition covariates. Measured PFM and calculated PFM from previous formulas were compared in each quarter of the age spectrum.Results: A total of 2324 volunteers were included in this study. The overall body composition and weight status, average body weight, height, BMI, FM, FFM, and its derivatives were significantly different among age groups. The coefficient of age altered the PFM differently between younger, middle, and older groups (0.07; P = 0.02 vs 0.13; P < 0.01 vs 0.26; P <0.01; respectively). All coefficients of age alterations in all FM- and FFM-derived variables between each age spectrum were tested, demonstrating a significant difference between the younger (<60 years) and older (≥60 years) age groups, except the PFFM to BMI ratio (difference of PFM and FMI [95% confidence interval]: 17.8 [12.8–22.8], P < 0.01; and 4.58 [3.4–5.8], P < 0.01; respectively). The comparison between measured PFM and calculated PFM demonstrated a significant difference with increments of age.Conclusion: The relationship between body FM and BMI varies on the age spectrum. A calculated formula in older people might be distorted with the utilization of constant coefficients.Keywords: fat mass, fat free mass, age, body mass index, Thai Chittawatanarat KPruenglampoo SKongsawasdi SChuatrakoon BTrakulhoon VUngpinitpong WPatumanond JDove Medical Pressarticlefat massfat free massagebody mass indexThaiGeriatricsRC952-954.6ENClinical Interventions in Aging, Vol Volume 6, Pp 285-294 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	fat mass fat free mass age body mass index Thai Geriatrics RC952-954.6
spellingShingle	fat mass fat free mass age body mass index Thai Geriatrics RC952-954.6 Chittawatanarat K Pruenglampoo S Kongsawasdi S Chuatrakoon B Trakulhoon V Ungpinitpong W Patumanond J The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis
description	Kaweesak Chittawatanarat1,2, Sakda Pruenglampoo3, Siriphan Kongsawasdi4, Busaba Chuatrakoon4, Vibul Trakulhoon5, Winai Ungpinitpong6, Jayanton Patumanond21Department of Surgery, Faculty of Medicine, 2Clinical Epidemiology Unit, 3Research Institute for Health Sciences, 4Department of Physical Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 5Department of Surgery, Bhumibol Adulyadej Hospital, Bangkok, 6Surgical Unit, Surin Hospital, Surin, ThailandBackground: The measurements of body mass index (BMI) and percentage of body fat are used in many clinical situations. However, special tools are required to measure body fat. Many formulas are proposed for estimation but these use constant coefficients of age. Age spectrum might affect the predicted value of the body composition due to body component alterations, and the coefficient of age for body fat prediction might produce inconsistent results. The objective of this study was to identify variations of BMI and body fat across the age spectrum as well as compare results between BMI predicted body fat and bioelectrical impedance results on age.Methods: Healthy volunteers were recruited for this study. Body fat was measured by bioelectrical impedance. The age spectrum was divided into three groups (younger: 18–39.9; middle: 40–59.9; and older: ≥60 years). Comparison of body composition covariates including fat mass (FM), fat free mass (FFM), percentage FM (PFM), percentage FFM (PFFM), FM index (FMI) and FFM index (FFMI) in each weight status and age spectrum were analyzed. Multivariable linear regression coefficients were calculated. Coefficient alterations among age groups were tested to confirm the effect of the age spectrum on body composition covariates. Measured PFM and calculated PFM from previous formulas were compared in each quarter of the age spectrum.Results: A total of 2324 volunteers were included in this study. The overall body composition and weight status, average body weight, height, BMI, FM, FFM, and its derivatives were significantly different among age groups. The coefficient of age altered the PFM differently between younger, middle, and older groups (0.07; P = 0.02 vs 0.13; P < 0.01 vs 0.26; P <0.01; respectively). All coefficients of age alterations in all FM- and FFM-derived variables between each age spectrum were tested, demonstrating a significant difference between the younger (<60 years) and older (≥60 years) age groups, except the PFFM to BMI ratio (difference of PFM and FMI [95% confidence interval]: 17.8 [12.8–22.8], P < 0.01; and 4.58 [3.4–5.8], P < 0.01; respectively). The comparison between measured PFM and calculated PFM demonstrated a significant difference with increments of age.Conclusion: The relationship between body FM and BMI varies on the age spectrum. A calculated formula in older people might be distorted with the utilization of constant coefficients.Keywords: fat mass, fat free mass, age, body mass index, Thai
format	article
author	Chittawatanarat K Pruenglampoo S Kongsawasdi S Chuatrakoon B Trakulhoon V Ungpinitpong W Patumanond J
author_facet	Chittawatanarat K Pruenglampoo S Kongsawasdi S Chuatrakoon B Trakulhoon V Ungpinitpong W Patumanond J
author_sort	Chittawatanarat K
title	The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis
title_short	The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis
title_full	The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis
title_fullStr	The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis
title_full_unstemmed	The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis
title_sort	variations of body mass index and body fat in adult thai people across the age spectrum measured by bioelectrical impedance analysis
publisher	Dove Medical Press
publishDate	2011
url	https://doaj.org/article/7f0af236182b41f09a8fc4c86a9dcc3d
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The variations of body mass index and body fat in adult Thai people across the age spectrum measured by bioelectrical impedance analysis

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