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Santiago LN, Martins PC, Silva DAS. Utilization of bioelectrical impedance vector analysis (BIVA) in children and adolescents without diagnosed diseases: a systematic review. Physiol Meas 2024; 45:02TR02. [PMID: 38306664 DOI: 10.1088/1361-6579/ad252e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 02/02/2024] [Indexed: 02/04/2024]
Abstract
Introduction. Bioelectrical impedance vector analysis (BIVA) emerges as a technique that utilizes raw parameters of bioelectrical impedance analysis and assumes the use of a reference population for information analysis.Objective. To summarize the reference values, main studies objectives, approaches, pre-test recommendations and technical characteristics of the devices employed in studies utilizing BIVA among children and adolescents without diagnosed diseases.Methods. A systematic search was conducted in nine electronic databases (CINAHL, LILACS, PubMed, SciELO, Scopus, SPORTDiscus, Science Direct, MEDLINE, and Web of Science). Studies with different designs which allowed extracting information regarding reference values of BIVA in children and adolescents without diagnosed diseases, aged 19 years or younger, were included. The systematic review followed PRISMA procedures and was registered in PROSPERO (registration: CRD42023391069).Results. After applying the eligibility criteria, 36 studies were included. Twenty studies (55.6%) analyzed body composition using BIVA, thirteen studies (36.1%) aimed to establish reference values for BIVA, and three studies (8.3%) investigated the association of physical performance with BIVA. There was heterogeneity regarding the reference populations employed by the studies. Fifteen studies used their own sample as a reference (41.6%), four studies used the adult population as a reference (11.1%), and five studies used reference values from athletes (13.9%).Conclusion. Nutricional status and body composition were the main studies objectives. References values were not always adequate or specific for the sample and population. Furthermore, there was no pattern of pre-test recommendations among the studies.
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Affiliation(s)
- Leandro Narciso Santiago
- Research Center in Kinanthropometry and Human Performance, Physical Education Department, Sports Center, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Priscila Custódio Martins
- Research Center in Kinanthropometry and Human Performance, Physical Education Department, Sports Center, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Diego Augusto Santos Silva
- Research Center in Kinanthropometry and Human Performance, Physical Education Department, Sports Center, Federal University of Santa Catarina, Florianopolis, SC, Brazil
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Graybeal AJ, Tinsley GM, Brandner CF, Aultman R. Raw bioelectrical impedance measurements are not different between White and Black adults when matched for sex, age, BMI, and other physical characteristics. Nutr Res 2023; 112:1-10. [PMID: 36933277 PMCID: PMC10079621 DOI: 10.1016/j.nutres.2023.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/20/2023] [Accepted: 02/20/2023] [Indexed: 03/18/2023]
Abstract
Raw bioelectrical impedance measurements are often used as a prognosticator of health status because of their association with disease states and malnutrition. Although studies consistently show the effect of physical characteristics on bioelectrical impedance, few investigations describe the effect of race, particularly for Black adults, and many bioelectrical impedance standards were produced from primarily White adults almost 2 decades ago. Therefore, this study sought to evaluate the racial differences in bioelectrical impedance measurements using bioimpedance spectroscopy between non-Hispanic White and non-Hispanic Black adults matched for age, sex, and body mass index. We hypothesized that Black adults would have a lower phase angle from higher resistance and lower reactance compared with White adults. One hundred non-Hispanic White (n = 50) and non-Hispanic Black (n = 50) males (n = 34) and females (n = 66) matched for sex, age, and body mass index completed this cross-sectional study. Participants underwent several anthropometric assessments, including height, weight, waist circumference, hip circumference, bioimpedance spectroscopy, and dual-energy X-ray absorptiometry. Bioelectrical impedance measures of resistance, reactance, phase angle, and impedance were all collected at frequencies of 5, 50, and 250 kHz and bioelectrical impedance vector analysis was performed using 50-kHz data. There were no significant differences for any anthropometric variable between Black and White participants in the total sample or by sex groups. In addition, there were no significant racial differences for any bioelectrical impedance assessment, including bioelectrical impedance vector analysis. Differences in bioelectrical impedance are likely not a function of race between Black and White adults and concerns regarding its utility should not be based on this characteristic.
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Affiliation(s)
- Austin J Graybeal
- School of Kinesiology & Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS 39406, USA.
| | - Grant M Tinsley
- Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX 79409, USA
| | - Caleb F Brandner
- School of Kinesiology & Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Ryan Aultman
- School of Kinesiology & Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS 39406, USA
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Jiang F, Tang S, Eom JJ, Song KH, Kim H, Chung S, Kim CH. Accuracy of Estimated Bioimpedance Parameters with Octapolar Segmental Bioimpedance Analysis. SENSORS (BASEL, SWITZERLAND) 2022; 22:2681. [PMID: 35408295 PMCID: PMC9002650 DOI: 10.3390/s22072681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
The validity of the impedance parameters of the five body segments estimated using octapolar segmental bioelectrical impedance analysis (OS-BIA) has not been confirmed. This study aimed to verify the accuracy of the resistance (R), reactance (Xc), and phase angle of each five-body segment. The accuracy of the OS-BIA at 50 kHz was measured based on the direct tetrapolar segmental BIA. The differences in the estimated impedance parameters of the five body segments were compared to those measured from the OS-BIA in elderly men (N = 73) and women (N = 63). The estimated 50 kHz-R (Ω) was significantly higher than the measured 50 kHz-R in the right and left arms, and lower than the measured 50 kHz-R of the trunk, right leg, and left leg (all, p < 0.05). The estimated 50 kHz-phase angles in all the five body segments were significantly lower than the measured ones (all, p < 0.05). The findings suggest that the estimated impedance parameters, R, Xc, and phase angle of the trunk, were remarkedly underestimated, limiting the assessment of the physiological state of the organs in the body. Therefore, further intensive research is needed in the field of estimated segmental BIA in the future.
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Affiliation(s)
- Fanglin Jiang
- National Traditional Sports Teaching and Research Section of Hunan Province, College of Physical Education, Hunan Normal University, Changsha 410012, China;
- Department of Sports Medicine, Soonchunhyang University, Asan 31538, Korea;
| | - Saizhao Tang
- Department of Sports Medicine, Soonchunhyang University, Asan 31538, Korea;
| | - Jin-Jong Eom
- Department of Sport, Leisure & Recreation, Soonchunhyang University, Asan 31538, Korea;
| | - Keon-Hyoung Song
- Department of Pharmaceutical Engineering, Soonchunhyang University, Asan 31538, Korea;
| | - Hyeoijin Kim
- Department of Physical Education, Korean National University of Education, Cheongju-si 38173, Korea;
| | - Sochung Chung
- Department of Pediatrics, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05030, Korea
| | - Chul-Hyun Kim
- Department of Sports Medicine, Soonchunhyang University, Asan 31538, Korea;
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Gomes TLM, Peixoto MVM, de Azevedo ZMA, Fonseca VM, Ramos EG. Association of electrical bioimpedance vectors with the nutritional classification of vulnerable multiethnic children. Clin Nutr ESPEN 2021; 46:453-458. [PMID: 34857233 DOI: 10.1016/j.clnesp.2021.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/06/2021] [Accepted: 09/15/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND & AIMS Monitoring growth and body composition in childhood is vital for early detection of health and nutrition problems during child development. The bioelectrical impedance vector analysis (BIVA) revealed its effectiveness as an indicator of nutritional status. This study aimed to measure the bioimpedance vectors of a sample of multiethnic children and evaluate the utility of BIVA for the classification of the nutritional status in a group of children with greater vulnerability, including in the presence of obesity. METHODS This is a cross-sectional study that analyzed the bioelectrical impedance of a sample of 321 children from public daycare centers, aged 1-4 years, using the RXc graph method (tetrapolar analysis at 50 kHz frequency). The 95%, 75%, and 50% tolerance ellipses were plotted by age group. The Z-scores of bioimpedance parameters (Xc/H-Z and R/H-Z) were calculated regarding age, which were used to build reference tolerance ellipses for a single group, regardless of age. Such ellipses were evaluated for their ability to recognize the pattern and classify the deviations, using individual vectors of obese children. RESULTS The mean impedance vectors showed progressively higher reactances and lower resistances with age. In the group of obese children, the individual vectors located outside the 95% baseline tolerance ellipse were 12.5%, 18.75%, and 11.1% of the cases for the WHZ, WAZ, and BMIZ criteria, respectively, all above the expected 5%, but much below expectations. This may be a problem with the obesity criteria used, as WHZ, WAZ, and BMIZ do not differentiate fat from lean mass. CONCLUSION Bioimpedance vector analysis reflects differences in the bioelectric patterns of children classified as obese. Provided the obesity criteria are constructed based on fat measurements, rather than lean mass, the use of tolerance ellipses in the BIVA chart is promising as a tool for monitoring nutritional status where measuring body composition is difficult, because constant tissue hydration cannot be assumed.
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Affiliation(s)
- Taisa Lisboa Montagner Gomes
- Department of Education and Research, Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, São Luís, Brazil.
| | - Maria Virginia Marques Peixoto
- Analytical Methods Laboratory, Research Department, Instituto Fernandes Figueira, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Zina Maria Almeida de Azevedo
- Intensive Care Unit, Pediatrics Department, Instituto Fernandes Figueira, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Vania Matos Fonseca
- Clinical Research Unit, Instituto Fernandes Figueira, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Eloane Gonçalves Ramos
- Clinical Research Unit, Instituto Fernandes Figueira, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Mattiello R, Amaral MA, Mundstock E, Ziegelmann PK. Reference values for the phase angle of the electrical bioimpedance: Systematic review and meta-analysis involving more than 250,000 subjects. Clin Nutr 2020; 39:1411-1417. [DOI: 10.1016/j.clnu.2019.07.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/25/2019] [Accepted: 07/03/2019] [Indexed: 02/07/2023]
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An evaluation of phase angle, bioelectrical impedance vector analysis and impedance ratio for the assessment of disease status in children with nephrotic syndrome. BMC Nephrol 2019; 20:331. [PMID: 31438871 PMCID: PMC6704501 DOI: 10.1186/s12882-019-1511-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/02/2019] [Indexed: 11/25/2022] Open
Abstract
Background Oedema, characterized by accumulation of extracellular water (ECW), is one of the major clinical manifestations in children suffering from nephrotic syndrome (NS). The lack of a simple, inexpensive and harmless method for assessing ECW may be solved by the use of the bioelectrical impedance analysis (BIA) technique. The aims of this study were to examine whether phase angle (PA), bioelectrical impedance vector analysis (BIVA) and the impedance ratio (IR) reflect change in disease status in children with NS. Methods Eight children (age range: 2–10 years) with active NS (ANS group) were enrolled. In five of these (ANS* subgroup), impedance was also measured at remission (NSR group). Thirty-eight healthy children (age range: 2–10 years) were included as healthy controls (HC group). Whole-body impedance was measured with a bioimpedance spectroscopy device (Xitron 4200) with surface electrodes placed on the wrist and ankle. Results Values of PA, BIVA and IR were found to be significantly lower (p-value range < 0.001 to < 0.01) in the ANS patients compared to the HC and NSR groups. No significant differences were observed between the NSR and HC groups. Conclusion The studied parameters can be used to assess change in disease status in NS patients. Data were consistent with NS being associated with expansion of ECW. Electronic supplementary material The online version of this article (10.1186/s12882-019-1511-y) contains supplementary material, which is available to authorized users.
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The importance of bioelectrical impedance in the critical pediatric patient. Clin Nutr 2019; 39:1188-1194. [PMID: 31153673 DOI: 10.1016/j.clnu.2019.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 05/03/2019] [Accepted: 05/06/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND & AIMS Sepsis is still a significant cause of death in the Intensive Care Unit and its early diagnosis is vital. Changes in cell permeability have been observed early in sepsis. Lower values of bioelectrical impedance (BIA) such as reactance adjusted by height (Xc/H) and phase angle (PA) have already been studied as a prognostic biomarker for many diseases and may indicate cell injury. BIA is a low cost, practical, noninvasive method that can be measured at bedside. This study investigated the utility of PA and Xc/H raw values in the pediatric critical care unit as predictors of progression to septic shock, as a clinical monitoring tool and to support the diagnosis of septic shock. METHODS We prospectively analyzed bioelectrical impedance in 145 children aged between one month and six years who were not in septic shock on admission to the intensive care unit Serial bioelectrical impedance analysis (BIA) measures were analyzed to determine the sensitivity and specificity of accurately identifying children who subsequently developed septic shock. Kaplan-Meier septic shock-free survival curves modeled by Xc/H and PA were done. RESULTS The free-septic shock survival curve analysis showed that patients with the lowest median values of Xc/H and PA were associated with the highest percentage of occurrence of septic shock (p = 0.0001 for Xc/H and <0.0006 for PA) and longest length of stay in the intensive care unit (p < 0.0011 for Xc/H and p < 0.004 for PA). Values of Xc/H below 48.63 Ohm/m at admission showed statistically significant odds ratio (OR) of 3.72 for developing septic shock any time during the hospitalization period, with a 87% sensitivity, 35% specificity and an area under the curve (AUC) of 0.62. The PA at admission did not show significant results. During hospitalization, patients with Xc/H below 35.72 Ohm/m were 3.38 times more likely to develop septic shock in the next day, with a sensitivity of 66.7%, a specificity of 62.3% and AUC of 0.65. PA values below 3.27 had an OR of 9.58 for a septic shock the next day with a sensitivity of 95.8%, specificity of 29.4% and AUC of 0.62. The presence of a value of Xc/H below 33 Ohm/m showed a strong association with the occurrence of septic shock on the same day of the measurement, with an OR of 11.7, as well as a value of PA below 2.64, showed an OR of 14.2. CONCLUSIONS The bioelectrical parameters Xc/H and phase angle have limitations in predicting septic shock as isolated biomarkers, but have a potential role as a monitoring tool in the pediatric intensive care unit. The comparative value with other biomarkers remains to be elucidated.
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Redondo-Del-Río MP, Escribano-García C, Camina-Martín MA, Caserío-Carbonero S, Cancho-Candela R, de-Mateo-Silleras B. Bioelectrical impedance vector values in a Spanish healthy newborn population for nutritional assessment. Am J Hum Biol 2019; 31:e23244. [PMID: 30972859 DOI: 10.1002/ajhb.23244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 02/05/2019] [Accepted: 03/10/2019] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Vector bioimpedance analysis (BIVA) can be very useful for the evaluation of body composition, hydration, and nutritional status in infants and newborns. The objective of this study was to determine the impedance vector distribution for a group of healthy newborn Spanish children. METHODS This was a cross-sectional, descriptive study conducted with 154 healthy, Spanish newborns (gestational age: 37-41 weeks) aged 24 to 72 hours (79 males, 75 females). Weight, height, and cephalic-circumference were determined. Resistance and reactance were measured with a single-frequency impedance analyzer at 50 kHz (tetrapolar analysis). The newborns' specific 95% confidence intervals of the mean vectors and the 95%, 75%, and 50% tolerance intervals for the individual vector measurements were plotted using R and Xc components standardized by the subjects' lengths. The mean impedance vectors were compared with Hotelling's-T2 test for vector analysis (significance level: P < .05). RESULTS The newborns exhibited gender-related differences in the mean impedance vector (mean [SD] R/H: 833.6 [97.5] Ohm/m in males vs 918.2 [107.7] Ohm/m in females; mean [SD] Xc/H: 91.3 [34.7] Ohm/m in males vs 95.6 [23.2] Ohm/m in females). No statistically significant differences in the mean impedance vectors were observed according to days of life. Lower values of resistance and slightly higher reactance values were observed in the healthy Spanish newborns compared to Italian newborns. CONCLUSIONS New tolerance ellipses were constructed for healthy Spanish newborns. These data allow detecting alterations in the hydration status and cell mass in term newborns in the first 3 days of life.
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Affiliation(s)
- María P Redondo-Del-Río
- Department of Nutrition and Food Science, Faculty of Medicine, Valladolid University, Valladolid, Spain
| | - Carla Escribano-García
- Department of Pediatrics, Hospital Universitario Río Hortega, University of Valladolid, Valladolid, Spain
| | - María A Camina-Martín
- Department of Nutrition and Food Science, Faculty of Medicine, Valladolid University, Valladolid, Spain
| | - Sonia Caserío-Carbonero
- Department of Pediatrics, Hospital Universitario Río Hortega, University of Valladolid, Valladolid, Spain
| | - Ramón Cancho-Candela
- Department of Pediatrics, Hospital Universitario Río Hortega, University of Valladolid, Valladolid, Spain
| | - Beatriz de-Mateo-Silleras
- Department of Nutrition and Food Science, Faculty of Medicine, Valladolid University, Valladolid, Spain
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Lack of agreement of in vivo raw bioimpedance measurements obtained from two single and multi-frequency bioelectrical impedance devices. Eur J Clin Nutr 2018; 73:1077-1083. [PMID: 30349141 DOI: 10.1038/s41430-018-0355-z] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 10/08/2018] [Accepted: 10/09/2018] [Indexed: 11/08/2022]
Abstract
BACKGROUND It is important for highly active individuals to accurately assess their hydration level. Bioelectrical impedance (BIA) can potentially meet these needs but its validity in active individuals is not well established. METHODS We compared whole-body bioimpedance measurements obtained from multi-frequency bioelectrical impedance spectroscopy (BIS, Xitron 4200) at a 50 kHz frequency with those determined by a phase-sensitive single-frequency device (SF-BIA, BIA-101, RJL/Akern Systems) in two populations: active adults and elite athletes. RESULTS One hundred twenty-six participants, including active males involved in recreational sports (N = 25, 20-39 yr) and elite athletes (females: N = 26, 18-35 yr; males: N = 75, 18-38 yr) participated in this study. Reactance (Xc), Resistance (R), Impedance (Z), and phase angle (PhA) were obtained by BIS and SF-BIA. Small but significant differences (R: -9.91 ± 15.09 Ω; Xc: -0.97 ± 2.56 Ω; Z: -9.96 ± 15.18 Ω; PhA: 0.12 ± 0.2°) were observed between the bioimpedance equipment in all measured variables (p < 0.05) though differences were within the devices' technical error of measurements. Device-specific values were highly (p < 0.0001) correlated [R2 ranged from 0.881 (Xc) to 0.833 (R)], but slopes and intercepts were different (p < 0.0001) from 1 and 0, respectively. Relatively large limits of agreement were observed for R (-40 to 21 Ω), Xc (-6 to 4 Ω), PhA (-0.4 to 0.5°), and impedance (-40 to 20 Ω). CONCLUSION Bioimpedance measurements from the current single- and multi-frequency devices should not be used interchangeably. The of lack of agreement between devices was observed in determining individual values of R, Xc, Z and PhA of highly active populations possibly due to methodological and biological factors.
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Dinkel D, Hanson C, Koehler K, Berry AA, Kyvelidou A, Bice M, Wallen J, Bagenda D, Jana L, Pressler J. An overview of assessment methodology for obesity-related variables in infants at risk. Nutr Health 2018; 24:47-59. [PMID: 28944717 DOI: 10.1177/0260106017732268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND The first 2 years of a child's life are a particularly critical time period for obesity prevention. AIM An increasing amount of research across the world is aimed at understanding factors that impact early childhood obesity and developing interventions that target these factors effectively. With this growing interest, new and interdisciplinary research teams are developing to meet this research need. Due to rapid growth velocity during this phase of the lifespan, typical assessments used in older populations may not be valid or applicable in infants, and investigators need to be aware of the pros and cons of specific methodological strategies. METHODS This paper provides an overview of methodology available to assess obesity-related factors in the areas of anthropometry and body composition, nutrient intake, and energy expenditure in infants aged 0-2 years. RESULTS Gold standard measures for body composition, such as dual-energy X-ray absorptiometry (DXA) or other imaging techniques, are costly, require highly trained personnel, and are limited for research application. Nutrient intake methodology primarily includes surveys and questionnaires completed via parent proxy report. In terms of energy expenditure, methods of calorimetry are expensive and may not differentiate between different activities. Questionnaires or physical activity sensors offer another way of energy expenditure assessment. However, questionnaires have a certain recall bias, while the sensors require further validation. CONCLUSIONS Overall, in addition to understanding the pros and cons of each assessment tool, researchers should take into consideration the experience of the interdisciplinary team of investigators, as well as the cost and availability of measures at their institution.
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Affiliation(s)
- Danae Dinkel
- 1 School of Health and Kinesiology, University of Nebraska at Omaha, USA
| | - Corrine Hanson
- 2 Medical Nutrition Education, University of Nebraska Medical Center, USA
| | - Karsten Koehler
- 3 Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, USA
| | - Ann Anderson Berry
- 4 Division of Newborn Medicine, University of Nebraska Medical Center, Department of Pediatrics, USA
| | | | - Matthew Bice
- 6 Department of Kinesiology and Sport Sciences, University of Nebraska Kearney, USA
| | - Jill Wallen
- 7 Department of Growth and Development, University of Nebraska Medical Center, USA
| | - Danstan Bagenda
- 8 Department of Anesthesiology, University of Nebraska Medical Center, USA
| | - Laura Jana
- 9 College of Health and Human Development, Penn State University, USA
| | - Jana Pressler
- 10 College of Nursing, University of Nebraska Medical Center, USA
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Toffano RBD, Hillesheim E, Margutti AVB, Camelo Junior JS, Ferraz IS, Del Ciampo LA, Monteiro JP. Bioelectrical Impedance Vector Analysis in Healthy Term Infants in the First Three Months of Life in Brazil. J Am Coll Nutr 2017; 37:93-98. [PMID: 29111907 DOI: 10.1080/07315724.2017.1364678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Bioelectrical impedance vectorial analysis (BIVA) can be considered a favorable method for evaluation and monitoring of nutritional and hydration status without assumptions regarding body composition or requirement of prediction formulas. The present study aimed to determine bivariate tolerance intervals of the whole-body impedance vector for healthy term infants aged 1 to 3 months. METHODS This is a descriptive cross-sectional study. Anthropometric and bioelectrical impedance data (800 mA-50 kHz) were obtained. Bivariate vector analysis was conducted with the resistance-reactance (RXc) graph method. BIVA software was used to construct the graphs. RESULTS A total of 150 appropriate for gestational age infants (48.7% boys) who were exclusively breastfed and were 56.4 (SD = 23.1) days of age were studied. RXc tolerance ellipses (50, 75, and 95%) were constructed for boys and girls, but a general reference graph was defined for all infants considering the overlapping of ellipses between the genders. All graphs differed from those in national and foreign studies. CONCLUSION New reference tolerance ellipses (95, 75, and 50%) for 1- to 3-month-old infants were constructed, pointing out the need for specific reference values of total body impedance vectors in different regions of Brazil. The RXc tolerance ellipses can be used for clinical practice and provide an easy method to evaluate and monitor body composition and hydration status.
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Affiliation(s)
- Roseli Borges Donegá Toffano
- a Department of Pediatrics , School of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - Elaine Hillesheim
- a Department of Pediatrics , School of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - Ana Vitoria Barban Margutti
- a Department of Pediatrics , School of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - José Simon Camelo Junior
- a Department of Pediatrics , School of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - Ivan Savioli Ferraz
- a Department of Pediatrics , School of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - Luiz Antonio Del Ciampo
- a Department of Pediatrics , School of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - Jacqueline Pontes Monteiro
- a Department of Pediatrics , School of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
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Brantlov S, Jødal L, Lange A, Rittig S, Ward LC. Standardisation of bioelectrical impedance analysis for the estimation of body composition in healthy paediatric populations: a systematic review. J Med Eng Technol 2017; 41:460-479. [DOI: 10.1080/03091902.2017.1333165] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Steven Brantlov
- Department of Procurement & Clinical Engineering, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Jødal
- Department of Nuclear Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Aksel Lange
- Department of Paediatrics, Aarhus University Hospital, Aarhus, Denmark
| | - Søren Rittig
- Department of Paediatrics, Aarhus University Hospital, Aarhus, Denmark
| | - Leigh C. Ward
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
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Redondo-del-Río MP, Camina-Martín MA, Marugán-de-Miguelsanz JM, de-Mateo-Silleras B. Bioelectrical impedance vector reference values for assessing body composition in a Spanish child and adolescent population. Am J Hum Biol 2017; 29. [PMID: 28168808 DOI: 10.1002/ajhb.22978] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 01/15/2017] [Indexed: 11/08/2022] Open
Affiliation(s)
- M. P. Redondo-del-Río
- Department of Nutrition and Food Science, Faculty of Medicine; University of Valladolid; C/Ramón y Cajal, 7 Valladolid 47005 Spain
| | - M. A. Camina-Martín
- Department of Nutrition and Food Science, Faculty of Medicine; University of Valladolid; C/Ramón y Cajal, 7 Valladolid 47005 Spain
| | - J. M. Marugán-de-Miguelsanz
- Department of Pediatrics, Faculty of Medicine; University of Valladolid; C/Ramón y Cajal, 7 Valladolid 47005 Spain
| | - B. de-Mateo-Silleras
- Department of Nutrition and Food Science, Faculty of Medicine; University of Valladolid; C/Ramón y Cajal, 7 Valladolid 47005 Spain
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Brantlov S, Ward LC, Jødal L, Rittig S, Lange A. Critical factors and their impact on bioelectrical impedance analysis in children: a review. J Med Eng Technol 2016; 41:22-35. [DOI: 10.1080/03091902.2016.1209590] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Mathias-Genovez MG, Oliveira CC, Camelo JS, Del Ciampo LA, Monteiro JP. Bioelectrical Impedance of Vectorial Analysis and Phase Angle in Adolescents. J Am Coll Nutr 2015; 35:262-70. [PMID: 26391733 DOI: 10.1080/07315724.2015.1027798] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVES Bioelectrical impedance can be interpreted by vector analysis using direct measures of the impedance vector; thus, collecting information about resistance (R), reactance (Xc), and phase angle (PA) makes it possible to classify an individual's nutritional status. The aim of this study was to investigate these values and construct bioelectrical references for healthy Brazilian adolescents. METHODS This is a cross-sectional study that included 567 healthy adolescents, aged 10 to 18 years. The bioelectrical impedance was performed to collect data for R and Xc. In addition, weight and height were also collected. The PA was calculated, and thereby the tolerance and confidence ellipses were constructed using specific software. RESULTS For boys the mean vectors of 11 and 12 years, 12 and 13 years, 13 and 14 years, and 15 and 16 years were different from each other (p < 0.05). For girls the only mean vectors with significant differences were 11 and 12 years (p = 0.0071). The results differ from those in the literature, possibly due to ethnic differences in body composition. CONCLUSION The present study provides an important tool for monitoring the nutritional status of adolescents of different ages, without previous knowledge of some anthropometric measures such as body weight.
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Affiliation(s)
- Mariana G Mathias-Genovez
- a Department of Pediatrics , School of Medicine of Ribeirão Preto (M.G.M.-G., J.S.C., L.A.D.C., J.P.M.), University of São Paulo (C.C.O.) , Ribeirão Preto , São Paulo , BRAZIL
| | | | - José S Camelo
- a Department of Pediatrics , School of Medicine of Ribeirão Preto (M.G.M.-G., J.S.C., L.A.D.C., J.P.M.), University of São Paulo (C.C.O.) , Ribeirão Preto , São Paulo , BRAZIL
| | - Luiz A Del Ciampo
- a Department of Pediatrics , School of Medicine of Ribeirão Preto (M.G.M.-G., J.S.C., L.A.D.C., J.P.M.), University of São Paulo (C.C.O.) , Ribeirão Preto , São Paulo , BRAZIL
| | - Jacqueline P Monteiro
- a Department of Pediatrics , School of Medicine of Ribeirão Preto (M.G.M.-G., J.S.C., L.A.D.C., J.P.M.), University of São Paulo (C.C.O.) , Ribeirão Preto , São Paulo , BRAZIL
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Reactance and resistance: main properties to follow the cell differentiation process in Bacillus thuringiensis by dielectric spectroscopy in real time. Appl Microbiol Biotechnol 2015; 99:5439-50. [PMID: 25862207 DOI: 10.1007/s00253-015-6562-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 03/17/2015] [Accepted: 03/19/2015] [Indexed: 10/23/2022]
Abstract
During growth, Bacillus thuringiensis presents three phases: exponential phase (EP), transition state (TS), and sporulation phase (SP). In order to form a dormant spore and to synthesize delta-endotoxins during SP, bacteria must undergo a cellular differentiation process initiated during the TS. Dielectric spectroscopy is a technique that can be utilized for continuous and in situ monitoring of the cellular state. In order to study on-line cell behavior in B. thuringiensis cultures, we conducted a number of batch cultures under different conditions, by scanning 200 frequencies from 42 Hz to 5 MHz and applying fixed current and voltage of 20 mA and 5 V DC, respectively. The resulting signals included Impedance (Z), Angle phase (Deg), Voltage (V), Current (I), Conductance (G), Reactance (X), and Resistance (R). Individual raw data relating to observed dielectric property profiles were correlated with the different growth phases established using data from cellular growth, cry1Ac gene expression, and free spores obtained with conventional techniques and fermentation parameters. Based on these correlations, frequencies of 0.1, 0.5, and 1.225 MHz were selected for the purpose of measuring dielectric properties in independent batch cultures, at a fixed frequency. X and R manifest more propitious behavior in relation to EP, TS, SP, and spore release, due to particular changes in their signals. Interestingly, these profiles underwent pronounced changes during EP and TS that were not noticed when using conventional methods, but were indicative of the beginning of the B. thuringiensis cell differentiation process.
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DEMERATH ELLENW, FIELDS DAVIDA. Body composition assessment in the infant. Am J Hum Biol 2014; 26:291-304. [PMID: 24424686 PMCID: PMC5761669 DOI: 10.1002/ajhb.22500] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 12/04/2013] [Accepted: 12/09/2013] [Indexed: 01/22/2023] Open
Abstract
Body composition assessment provides a sharper picture of the human biological response to genetic and environmental influences than measures of body size and weight. Infant body composition is particularly important as a marker of fetal adaptation and developmental programming of subsequent health and disease, but until recently, the range of options for measuring infant body composition was relatively narrow. The purpose of this Toolkit: Methods in Human Biology review is to provide a comprehensive overview of methods of body composition methods currently used in infants 0 to 2 years of age, including anthropometric prediction equations, air displacement plethysmography (ADP), dual energy X-ray absorptiometry (DXA), bioelectrical impedance analysis (BIA), isotope dilution, and magnetic resonance imaging (MRI). Information on the reliability, validity, and accuracy of the methods is provided. Unique aspects of infant physiology and behavior create challenges for body composition assessment, but this review provides guidance on suitable testing approaches and environments that may aid researchers in this important area of investigation.
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Affiliation(s)
- ELLEN W. DEMERATH
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, Minnesota 55454
| | - DAVID A. FIELDS
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
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Buffa R, Saragat B, Cabras S, Rinaldi AC, Marini E. Accuracy of specific BIVA for the assessment of body composition in the United States population. PLoS One 2013; 8:e58533. [PMID: 23484033 PMCID: PMC3590169 DOI: 10.1371/journal.pone.0058533] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Accepted: 02/05/2013] [Indexed: 01/20/2023] Open
Abstract
Background Bioelectrical impedance vector analysis (BIVA) is a technique for the assessment of hydration and nutritional status, used in the clinical practice. Specific BIVA is an analytical variant, recently proposed for the Italian elderly population, that adjusts bioelectrical values for body geometry. Objective Evaluating the accuracy of specific BIVA in the adult U.S. population, compared to the ‘classic’ BIVA procedure, using DXA as the reference technique, in order to obtain an interpretative model of body composition. Design A cross-sectional sample of 1590 adult individuals (836 men and 754 women, 21–49 years old) derived from the NHANES 2003–2004 was considered. Classic and specific BIVA were applied. The sensitivity and specificity in recognizing individuals below the 5th and above the 95th percentiles of percent fat (FMDXA%) and extracellular/intracellular water (ECW/ICW) ratio were evaluated by receiver operating characteristic (ROC) curves. Classic and specific BIVA results were compared by a probit multiple-regression. Results Specific BIVA was significantly more accurate than classic BIVA in evaluating FMDXA% (ROC areas: 0.84–0.92 and 0.49–0.61 respectively; p = 0.002). The evaluation of ECW/ICW was accurate (ROC areas between 0.83 and 0.96) and similarly performed by the two procedures (p = 0.829). The accuracy of specific BIVA was similar in the two sexes (p = 0.144) and in FMDXA% and ECW/ICW (p = 0.869). Conclusions Specific BIVA showed to be an accurate technique. The tolerance ellipses of specific BIVA can be used for evaluating FM% and ECW/ICW in the U.S. adult population.
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Affiliation(s)
- Roberto Buffa
- Department of Environmental and Life Sciences, University of Cagliari, Cagliari, Italy
| | - Bruno Saragat
- Department of Environmental and Life Sciences, University of Cagliari, Cagliari, Italy
| | - Stefano Cabras
- Department of Statistics - University Carlos III of Madrid, Getafe, Spain
- Department of Mathematics, University of Cagliari, Cagliari, Italy
| | - Andrea C. Rinaldi
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Elisabetta Marini
- Department of Environmental and Life Sciences, University of Cagliari, Cagliari, Italy
- * E-mail:
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Azevedo ZMA, Moore DCBC, de Matos FAA, Fonseca VM, Peixoto MVM, Gaspar-Elsas MIC, Santinoni E, Dos Anjos LA, Ramos EG. Bioelectrical impedance parameters in critically ill children: importance of reactance and resistance. Clin Nutr 2013; 32:824-9. [PMID: 23416114 DOI: 10.1016/j.clnu.2013.01.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 12/30/2012] [Accepted: 01/18/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Currently, there are no clinical or laboratory parameters that can be used efficiently to predict the prognosis of critically ill patients, but in some situations, raw bioelectrical impedance parameters have been shown to be useful. The purpose of this study was to investigate the behavior of reactance and resistance in the severity of the critically ill pediatric patient. METHODS We prospectively analyzed bioelectrical impedance in a sample of 332 critically ill pediatric patients submitted to mechanical ventilation. The values taken on admission and discharge were correlated with major outcomes to the critically ill patient. RESULTS We found an association of low values of Xc/H (<27.7 Ohm/m) and of R/H (<563.6 Ohm/m) on admission with multiple organs dysfunction greater or equal to 4. Both R/H and Xc/H increased significantly between admission and discharge among survivors, while among nonsurvivors there was a trend of decrease between admission and the last measurement before death. CONCLUSIONS Bioelectrical impedance is a useful tool for monitoring of critically ill pediatric patients. A possible role of R/H and Xc/H, especially the latter, as a predictive biomarker of evolution for septic shock and organ dysfunction still remains to be elucidated.
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Affiliation(s)
- Zina Maria Almeida Azevedo
- Intensive Care Unit, Pediatrics Department, Fernandes Figueira Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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