bioelectrical impedance analysis

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Limits of body composition assessment by bioelectrical impedance analysis (BIA)

Limits of body composition assessment by bioelectrical impedance analysis (BIA)

30. Ghezzi F, Franchim M, Balestreri D, Lischetti B, Mele MC, Alberico S, Bolis P. Bioelectrical impedance analysis during pregnancy and neonatal birth weight. Eur J Obstet Gynecol Reprod Biol. 2001 Oct:171-176. 31. Piuri G, Ferrazzi E, Bulfoni C, Mastricci L, Di Martino D, Speciani AF. Longitudinal changes and correlations of bioimpedance and anthropometric measurements in pregnancy: Simple possible bed- side tools to assess pregnancy evolution. J Matern Fetal Neonatal Med.. 2017 Dec:2824-2830.

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Comparison of bioelectrical impedance analysis and magnetic resonance imaging for the quantification of fat mass

Comparison of bioelectrical impedance analysis and magnetic resonance imaging for the quantification of fat mass

Bioelectrical impedance analysis (BIA) is a cost effective, quick and safe method of assessing body composition. It has high repeatability [11] and unlike BMI and waist hip ratio, can provide information on body fat distribution. These advantages over other methods of assessing body composition have resulted in the routine use of BIA in clinical and research settings. The Tanita MC-180MA is an example of an eight-electrode multi frequency BIA machine that allows body fat mass to be estimated for each arm, each leg and the trunk.

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A practical guide to bioelectrical impedance analysis using the example of chronic obstructive pulmonary disease

A practical guide to bioelectrical impedance analysis using the example of chronic obstructive pulmonary disease

Summary Bioelectrical impedance analysis (BIA), particularly in combination with bioelectrical impedance vector analy- sis (BIVA), provides a viable opportunity for evaluating body composition in humans. However, lack of guidance for those interested in learning how to use and interpret BIA/BIVA in clinical practice has probably prevented its broader application. This practical guidance which is mainly based on own practical experience has attempted to provide a direction on the use of BIA/BIVA metho- dology with particular attention given to practical con- siderations. The basic principles of performing BIA/
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Bioelectrical impedance analysis measures of body composition and condition, and its sensitivity to the freezing process

Bioelectrical impedance analysis measures of body composition and condition, and its sensitivity to the freezing process

Keywords: Impedance, frozen fish quality, Tuna, BIA sensitivity to freezing Introduction Seafood products are an important international commodity. Seafood products maintain their value when nutrition (i.e. body composition), taste, gastronomic delights, and sensory quality (i.e. condition/spoilage) are maintained (Huss, 1993). Understanding both composition and condition is important to seafood quality, because even a product with appropriate body composition values (e.g. high fat in tuna) can have a poor quality rating if the condition of the fish is poor (e.g. product has deteriorated due to spoilage). Being able to measure body composition and condition quickly and easily on previously frozen fish would benefit the seafood industry by improving quality assurance and marketability of fish products. Bioelectrical impedance analysis (BIA) has been shown to quickly and easily predict body composition and condition of freshly killed or anesthetized live fish, but its functionality on frozen fish is unknown (Cox and Hartman, 2005; Duncan et al., 2007; Willis and Hobday, 2008; Fitzhugh et al., 2010; Hartman et al., 2011). Research has been done using BIA to investigate how electrical measures change with freezing types (i.e. fast-frozen, slow-frozen, once-frozen,
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Bioelectrical impedance analysis in clinical practice: implications for hepatitis C therapy BIA and hepatitis C

Bioelectrical impedance analysis in clinical practice: implications for hepatitis C therapy BIA and hepatitis C

increase in IR [30]. The present study was conducted to investigate whether BIA can be used to monitor changes or altera- tions in body composition parameters in patients with chronic HCV infection following antiviral therapy for 24 or 48 weeks. Although compromised by the small sam- ple size, our results suggest that bioelectrical impedance analysis does have the sensitivity required to distinguish significant differences in patients with chronic HCV infection with respect to body weight, BF, BCM, and TBW, in part related to the genotype. We also included a control group with untreated HCV infection whereas several studies of BIA in healthy subjects have shown mean PA values ranging from 6.3 to 8.2° [21,31]. Our findings for PA in untreated HCV patients did fall in that range. It should be noted that BIA can be affected by both BMI and age. A higher BMI is known to corre- late with a higher PA, possibly secondary to the effect of adipose tissue on resistance [32]. Other studies have suggested a gradual decrease in PA with age [31,33].
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Validity and Reliability of Bioelectrical Impedance Analysis and Skinfold Thickness in Predicting Body Fat in Military Personnel

Validity and Reliability of Bioelectrical Impedance Analysis and Skinfold Thickness in Predicting Body Fat in Military Personnel

Ingar Holme, PhD†; Sigmund A. Anderssen, PhD† ABSTRACT Previous studies show that body composition is related to injury risk and physical performance in soldiers. Thus, valid methods for measuring body composition in military personnel are needed. The frequently used body mass index method is not a valid measure of body composition in soldiers, but reliability and validity of alternative field methods are less investigated in military personnel. Thus, we carried out test and retest of skinfold (SKF), single frequency bioelectrical impedance analysis (SF-BIA), and multifrequency bioelectrical impedance analysis measurements in 65 male and female soldiers. Several validated equations were used to predict percent body fat from these methods. Dual-energy X-ray absorptiometry was also measured, and acted as the criterion method. Results showed that SF-BIA was the most reliable method in both genders. In women, SF-BIA was also the most valid method, whereas SKF or a combination of SKF and SF-BIA produced the highest validity in men. Reliability and validity varied substantially among the equations examined. The best methods and equations produced test–retest 95% limits of agreement below ±1% points, whereas the corresponding validity figures were ±3.5% points. Each investigator and practitioner must consider whether such measurement errors are acceptable for its specific use.
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The novel application of artificial neural network on bioelectrical impedance analysis to assess the body composition in elderly

The novel application of artificial neural network on bioelectrical impedance analysis to assess the body composition in elderly

6. Bussolotto M, Ceccon A, Sergi G, Giantin V, Benincà P, Enzi G: Assessment of body composition in elderly: accuracy of bioelectrical impedance analysis. Gerontology 1999, 45:39 – 43. 7. Kyle UG, Bosaeus I, De Lorenzo AD, Deurenberg P, Elia M, Gómez JM, Heitmann BL, Kent-Smith L, Melchior JC, Pirlich M, Scharfetter H, Schols AM, Pichard C, Composition of the ESPEN Working Group: Bioelectrical impedance analysis – part I: review of principles and methods. Clin Nutr 2004, 23:1226 – 1243.

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Validation of Hand-Held Bioelectrical Impedance Analysis for the Assessment of Body Fat in Young and Old Adults

Validation of Hand-Held Bioelectrical Impedance Analysis for the Assessment of Body Fat in Young and Old Adults

Visit 1: On the day of your first visit, you will report to the Physical Activity & Health Research Laboratory. A pregnancy test will be conducted for all female participants prior to any assessments. If you are pregnant or nursing or trying to become pregnant, you will not be able to complete portions of the study, and therefore, are ineligible. We will ask you to provide us with some information on your current and previous health. Additionally, we will ask you to complete five pen and paper questionnaires. Next, measures of resting heart rate and blood pressure as well as anthropometric measures of body weight, standing height, arm span, and waist and hip circumference measures will be taken. You will then have their body fat measured by three separate devices: tetrapolar bioelectrical impedance analysis (BIA), dual-energy x-ray absorptiometry (DEXA), and a hand-held BIA. Following BIA guidelines, you will rest supine for five minutes, after which body fat levels will be assessed using the tetrapolar BIA, followed by a DEXA scan. After completion of the supine body fat measures, you will be asked to stand where two consecutive body fat measurements will be completed with the hand-held BIA. Once body fat measures are completed, you will receive detailed verbal and written instructions on how to use the hand-held BIA for the free living day, including specific times of the day to take and record BF measures. In addition, you will be given instructions on the proper wear of a physical activity assessment device that you will wear for the free-living day as well as instructions to record body fat readings from the hand-held BIA that will be completed during the free-living day.
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Non invasive diagnosis of risk in dengue patients using bioelectrical impedance analysis and artificial neural network

Non invasive diagnosis of risk in dengue patients using bioelectrical impedance analysis and artificial neural network

the patient cannot be arbitrarily or based on uncertain identification due to the huge number of the dengue patients in the country [20]. Recently, several studies were conducted to achieve accurate diagnosis without facing the above-mentioned drawbacks. Ibrahim et al. [20] applied bioelectrical impedance analysis (BIA) technique to monitor and classify the

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Simple estimation of excess fluid volume in hemodialysis patients based on multifrequency bioelectrical impedance analysis data

Simple estimation of excess fluid volume in hemodialysis patients based on multifrequency bioelectrical impedance analysis data

Conflict of interest The authors declare that they have no conflict of interest related to this study. References 1. Kyle UG, Bosaeus I, De Lorenzo AD, Deurenberg P, Elia M, Gómez JM, Heitmann BL, Kent-Smith L, Melchior JC, Pirlich M, Scharfetter H, Schols AM, Pichard C; Composition of the ESPEN Working Group. Bioelectrical impedance analysis—part I: review of principles and methods. Clin Nutr. 2004; 23(5): 1226–43.

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Monitoring of muscle mass in critically ill patients: comparison of ultrasound and two bioelectrical impedance analysis devices

Monitoring of muscle mass in critically ill patients: comparison of ultrasound and two bioelectrical impedance analysis devices

Although monitoring of muscle mass is important, identification of an optimal method of estimating muscle mass remains difficult. There are many methods that can estimate muscle mass. In recent years, the use of ultrasound and bioelectrical impedance analysis (BIA) has become more widely accepted in the ICU [4]. A re- cent study by Kim et al. reported that BIA could be used for whole-body muscle mass assessment at one point in critically ill patients [5]. However, sequential muscle mass monitoring capability of BIA in the same critically ill patients, not muscle mass assessment at one point, has not been investigated. Patients in the ICU are gener- ally under abnormal fluid status. Because BIA indirectly estimates muscle mass using electrical resistance, and the resistance is affected by fluid status, the hypothesis that BIA could not accurately monitor the change of muscle mass in critically ill patients is reasonable.
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Perioperative fluid dynamics evaluated by bioelectrical impedance analysis predict infectious surgical complications after esophagectomy

Perioperative fluid dynamics evaluated by bioelectrical impedance analysis predict infectious surgical complications after esophagectomy

postoperative infectious complications which adversely affect postoperative management including fluid dynamics. The aim of the study is to evaluate the utility of perioperative bioelectrical impedance analysis (BIA) measurements for the patients after transthoracic esophagectomy. Method: Multi-frequency BIA measurements were conducted in 24 patients undergoing transthoracic esophagectomy preoperatively, at 1 h after surgery, and twice daily for the following 7 days. The amounts of extracellular water (ECW), internal cellular water (ICW), total body water (TBW), and fat-free mass (FFM) were calculated. Changing trends in variables were analyzed, and the patients were subdivided according to the presence of infectious surgical adverse events to identify differences in fluid dynamics.
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Bioelectrical Impedance Analysis (BIA) of the association of the Japanese Kampo concept “Suidoku” (fluid disturbance) and the body composition of women

Bioelectrical Impedance Analysis (BIA) of the association of the Japanese Kampo concept “Suidoku” (fluid disturbance) and the body composition of women

Background: In Japanese Kampo medical practice, suidoku (fluid disturbance) is one of the most important concepts for selecting the proper medication. Suidoku is an excessive or uneven distribution of fluid that is indicated by splashing sounds and pitting edema. However, few objective reports about suidoku have been published. Bioelectrical impedance analysis (BIA) uses resistance values obtained from weak electrical currents to estimate body composition, including intracellular and extracellular water and muscle and fat mass. In this study, we used BIA to search for objective factors that can discriminate the various types of suidoku.
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Inter-sport variability of muscle volume distribution identified by segmental bioelectrical impedance analysis in four ball sports

Inter-sport variability of muscle volume distribution identified by segmental bioelectrical impedance analysis in four ball sports

Abstract: The aim of this study was to evaluate and quantify differences in muscle distribu- tion in athletes of various ball sports using segmental bioelectrical impedance analysis (SBIA). Participants were 115 male collegiate athletes from four ball sports (baseball, soccer, tennis, and lacrosse). Percent body fat (%BF) and lean body mass were measured, and SBIA was used to measure segmental muscle volume (MV) in bilateral upper arms, forearms, thighs, and lower legs. We calculated the MV ratios of dominant to nondominant, proximal to distal, and upper to lower limbs. The measurements consisted of a total of 31 variables. Cluster and factor analyses were applied to identify redundant variables. The muscle distribution was significantly different among groups, but the %BF was not. The classification procedures of the discriminant analysis could correctly distinguish 84.3% of the athletes. These results suggest that collegiate ball game athletes have adapted their physique to their sport movements very well, and the SBIA, which is an affordable, noninvasive, easy-to-operate, and fast alternative method in the field, can distinguish ball game athletes according to their specific muscle distribution within a 5-minute measurement. The SBIA could be a useful, affordable, and fast tool for identifying talents for specific sports.
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Association of plasma adiponectin levels with cellular hydration state measured using bioelectrical impedance analysis in patients with COPD

Association of plasma adiponectin levels with cellular hydration state measured using bioelectrical impedance analysis in patients with COPD

Keywords: adiponectin, bioelectrical impedance analysis (BIA), cellular hydration, COPD, extra pulmonary phenotype Introduction Chronic obstructive pulmonary disease (COPD) is characterized by airflow limitation that is not fully reversible, typically progressive, and associated with an abnormal inflammatory response of the lung. 1 To date, it is widely recognized that COPD includes a variety of extra pulmonary complications and comorbidities. 2 For example, patients with COPD often show weight loss associated with muscle atrophy, 3 which

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Original Article. Assessment of hydration status and body composition of athlete and non-athlete subjects using Bioelectrical Impedance Analysis

Original Article. Assessment of hydration status and body composition of athlete and non-athlete subjects using Bioelectrical Impedance Analysis

Body fat mass and fat free mass were found to be comparable as measured by bioelectrical impedance analysis and air-displacement plethysmography in both hydration states. Air-displacement plethysmography showed no significant in body fat mass and fat free mass measurements in different hydration states comparing to bioelectrical impedance analysis. However hydration status was found to be significantly affecting body fat mass and fat free mass analysis using bioelectrical impedance analysis in non-athletes and athletes. Factors such as Body Mass Index, age and hydration status need to be taken into consideration to avoid unreliable results. Large number of subjects will be able to show better significant difference between the measurements.
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Evaluation of total body water in canine breeds by single frequency bioelectrical impedance analysis method: specific equations are needed for accuracy

Evaluation of total body water in canine breeds by single frequency bioelectrical impedance analysis method: specific equations are needed for accuracy

Bioelectrical impedance analysis (BIA) is often pre- sented as an alternative to dilution techniques and to dual X-ray absorptiometry for the evaluation of TBW and body composition. It is a quick non-invasive technique that requires inexpensive equipment and a low-intensity electrical current, which is painless and undetectable by the subject. BIA has been validated and routinely used in healthy as well as sick people [2–4]. This technique has also been validated with various types of equipment in several species including dogs [5–8], which has made it possible to derive linear regression equations for TBW evaluation. Nevertheless, development of specific equa- tions in humans based on sex, age, ethnic group, and physical activity has been necessary [9]. No similar data for dogs have been published.
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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

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

The standard ways of measuring FM and FFM need special investigation. Five commonly used methods for body fat detection as standard references are: body density via underwater weighing, DXA, three- and four- compartment models, deuterium dilution techniques, and bioelectrical impedance. 9,10,17,18 Along with the limitations to determining body fat, there are many proposed formulas for the calculation of percentage of body fat that use basic anthropometric parameters (BMI, age, gender, and ethnic differences). These generated prediction formulas are based on previously devised standard measurements; 9,10,19,20 they have differences in coefficients regarding age, gender, and ethnic differences. However, gender and ethnicity were categorized data, while age was a continuous variable. In addition, the predictive coefficient of age in these formulas use constant values throughout the life span in the same ethnic group, 3,9,10,19 which may have distorted and produced prediction errors from different spectrums in the age groups Table 3 Multivariate regression coefficient of parameters associated with percentage fat mass measured by bioelectrical impedance analysis
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Bioelectrical impedance analysis device: measurement of bioelectrical tissue conductivity in dengue patients

Bioelectrical impedance analysis device: measurement of bioelectrical tissue conductivity in dengue patients

This paper investigated that all descriptive analysis of haematological profile showed that constant abnormalities occur in PLT, AST, and ALT, while HCT only has a moderate elevation. 2. Experimental Set-up Human body can be represented as consisting of resistances and capacitances. In a healthy living body, the cell membrane consists of a layer of non-conductive lipid material sandwiched between two layers of conductive protein molecules. Biologically, the cell membrane functions as a permeable barrier separating the intracellular (cytoplasm) and extracellular components (Fig. 1a). It is traversed by numerous water soluble proteins, thus producing pores through which water, ions and other chemicals can enter and exit the cell. Controlling the flow of these materials is essential to life. The cell membrane protects the interior of the cell while allowing passage of some materials to which it is permeable.
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Evaluation of body composition in COPD patients using multifrequency bioelectrical impedance analysis

Evaluation of body composition in COPD patients using multifrequency bioelectrical impedance analysis

strength and limitations of the study Taking into account that the experimental protocol was carried out in a single center and had cross-sectional study design, to the best of our knowledge, this is the first study that evaluates impedance ratio. In addition, a quite large sample of COPD patients with different disease severity and func- tion impairment was studied. The main limitation is related to the fact that FFM was not concurrently measured with a reference technique, such as DXA. However, DXA does not provide information on water distribution between intra- and extracellular compartments or muscle quality.
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