Body composition measurements: From the past to the future

Pietrobelli, Angelo; Tatò, Luciano

doi:10.1080/08035320510035221

Cited by 37 publications

(17 citation statements)

References 40 publications

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“…Many different methods such as MRI/MRSI, computed tomography (CT) and dual-energy X-ray absorptiometry (DXA) are used to evaluate body composition and in particular the regional distribution of fat (125)(126)(127)(128)(129). While many studies have been published that were instrumental in improving understanding of lipid metabolism in general, a review of these publications would be beyond the limits of this article, which focuses on the observation of muscular lipids by means of 1 H-MRS.…”

Section: Mri Of Muscular Fat and Estimation Of Other Lipid Compartmenmentioning

confidence: 99%

Role of proton MR for the study of muscle lipid metabolism

et al. 2006

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1 H-MR spectroscopy (MRS) of intramyocellular lipids (IMCL) became particularly important when it was recognized that IMCL levels are related to insulin sensitivity. While this relation is rather complex and depends on the training status of the subjects, various other influences such as exercise and diet also influence IMCL concentrations. This may open insight into many metabolic interactions; however, it also requires careful planning of studies in order to control all these confounding influences. This review summarizes various historical, methodological, and practical aspects of 1 H-MR spectroscopy (MRS) of muscular lipids. That includes a differentiation of bulk magnetic susceptibility effects and residual dipolar coupling that can both be observed in MRS of skeletal muscle, yet affecting different metabolites in a specific way. Fitting of the intra-(IMCL) and extramyocellular (EMCL) signals with complex line shapes and the transformation into absolute concentrations is discussed. Since the determination of IMCL in muscle groups with oblique fiber orientation or in obese subjects is still difficult, potential improvement with high-resolution spectroscopic imaging or at higher field strength is considered. Fat selective imaging is presented as a possible alternative to MRS and the potential of multinuclear MRS is discussed. 1 H-MRS of muscle lipids allows non-invasive and repeated studies of muscle metabolism that lead to highly relevant findings in clinics and patho-physiology.

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Section: Mri Of Muscular Fat and Estimation Of Other Lipid Compartmenmentioning

confidence: 99%

Role of proton MR for the study of muscle lipid metabolism

et al. 2006

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“…Bioelectrical impedance analysis (BIA) is inexpensive, easy to use, portable, and requires no radiation exposure [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Thus, BIA may be useful as a portable alternative to DXA [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Developing and Validating an Age-Independent Equation of Multi-Frequency Bioelectrical Impedance Analysis for Estimation of Appendicular Skeletal Muscle Mass and Establishing Sarcopenia Cutoff

Yamada¹,

Nishizawa²,

Uchiyama³

et al. 2017

Preprint

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Background: Appendicular skeletal muscle (or lean) mass (ALM) estimated by dualenergy X-ray absorptiometry (DXA) is considered to be a preferred method for sarcopenia studies. However, DXA is expensive, has limited portability, and requires radiation exposure. Bioelectrical impedance analysis (BIA) is inexpensive, easy to use, and portable; thus BIA might be useful in sarcopenia investigations. However, a large variety of models have been commercially supplied by different companies, and for most consumer products, the equations estimating ALM are not disclosed. It is therefore difficult to use these equations for research purposes. In particular, the BIA equation is often age-dependent, which leads to fundamental difficulty in examining age-related ALM loss. The aims of the current study were: 1) to develop and validate an equation to estimate ALM using multi-frequency BIA (MF-BIA) using theoretical models, and 2) to establish sarcopenia cutoff values using the equation for the Japanese population. The mean values minus 2 standard deviations of the skeletal muscle mass index (ALM/Ht 2 ) in these participants were 6.8 and 5.7 kg/m 2 in men and women, respectively. Conclusion: the current study established and validated a theoretical and age-independent equation using MF-BIA to estimate ALM and provided reasonable sarcopenia cutoff values.

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“…5 El análisis de la composición corporal constituye una parte fundamental en la valoración del estado nutritivo de un individuo y consiste en el fraccionamiento de la masa total del cuerpo en sus distintos componentes principales. 6,7 La estimación de ciertos parámetros de composición corporal permite, no sólo conocer las reservas calóricas y proteicas, sino también identificar la presencia de algunos factores de riesgo relacionados con la enfermedad producto de una mala nutrición, tanto por déficit como por exceso. 8 En este contexto, es válido aplicar técnicas de análisis multivariante que, en un sentido amplio, se refiere a todos los métodos estadísticos que analizan simultáneamente medidas múltiples de cada individuo u objeto sometido a una investigación.…”

Section: Introductionunclassified

Clasificación del estado nutricional basada en perfiles antropométricos del personal silvoagropecuario femenino de un sector del centro-sur de Chile

Espinoza¹,

Palomo²,

Urrea³

2016

Cienc Trab.

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Entre 1960 y 1990, el número de mujeres económicamente activas se triplicó, pasando de 18 a 57 millones, mientras que en los hombres ni siquiera alcanzó a duplicarse (de 80 a 147 millones). Como resultado de esta tendencia de largo plazo, se ha reducido la brecha entre los sexos, en términos de participación en la fuerza de trabajo.1 En Chile, la población laboral femenina participa en una variada gama de sectores productivos, siendo los más significativos el silvoagropecuario, comercio, servicios e industria manufacturera. Si bien el sector agropecuario se mantiene entre los más importantes, ha tenido en la última década una disminución continua, dada su importancia relativa en la economía nacional. 2Rubros tales como el silvícola, agrícola, o la combinación de ellos (silvoagropecuario), resultan ser algunos de los más importantes desde la perspectiva del análisis del trabajo, ya que es en este INTRODUCCIÓNLa participación de las mujeres latinoamericanas en el mundo del trabajo ha crecido significativamente durante las últimas décadas. ABSTRACTIn order to identify the anthropometric variables that best explain the nutritional status of female staff of the agriculture and forestry sector of the Maule and Bio Bio in Chile, nutritional status was determined using three indicators: body mass index (BMI ), percentage of fat mass obtained through bioelectrical impedance and subcutaneous measurements. This research proposes the hypothesis that an anthropometric assessment to determine the variables that explain the body composition through multivariate techniques. The identification of anthropometric profiles, which allowed to characterize the probability of overweight women workers, was carried through classification trees, statistical technique based on the use of predictive variables to partition the database, in similar regions, obtaining highly homogeneous groups for a particular feature. As a result it was determined that the study population has high percentages of obesity. The classification methodology determined for the case of BMI, anthropometric variables that significantly explained the probability of overweight were hip circumference and age; however, in the case of fat mass percentage determined by bioelectrical impedance they were forearm circumference and triceps skinfold; and through skinfolds, submental crease, height and weight. RESUMENCon el objetivo de identificar las variables antropométricas que mejor explican el estado nutricional del personal femenino del sector silvoagropecuario de las regiones del Maule y Bío-Bío en Chile, se determinó su estado nutricional a través de tres indicadores: el índice de masa corporal (IMC), porcentaje de masa grasa obtenido a través de impedancia bioeléctrica y mediciones subcutáneas. La presente investigación propone como hipótesis que una evaluación antropométrica permite determinar las variables que explican la composición corporal, a través de técnicas multivariantes. La identificación de perfiles antropométricos, que permitieron caracterizar la probabilid...

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Body composition measurements: From the past to the future

Cited by 37 publications

References 40 publications

Role of proton MR for the study of muscle lipid metabolism

Role of proton MR for the study of muscle lipid metabolism

Developing and Validating an Age-Independent Equation of Multi-Frequency Bioelectrical Impedance Analysis for Estimation of Appendicular Skeletal Muscle Mass and Establishing Sarcopenia Cutoff

Clasificación del estado nutricional basada en perfiles antropométricos del personal silvoagropecuario femenino de un sector del centro-sur de Chile

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