scholarly journals Bioelectrical impedance vector analysis, phase-angle assessment and relationship with malnutrition risk in a cohort of frail older hospital patients in the United Kingdom

Nutrition ◽  
2015 ◽  
Vol 31 (1) ◽  
pp. 132-137 ◽  
Author(s):  
Adrian Slee ◽  
Deborah Birch ◽  
David Stokoe
Keyword(s):  
United Kingdom ◽  
Phase Angle ◽  
Bioelectrical Impedance ◽  
Vector Analysis ◽  
Bioelectrical Impedance Vector Analysis ◽  
The United Kingdom ◽  
Analysis Phase ◽  
Hospital Patients ◽  
Impedance Vector

Identifying Athlete Body Fluid Changes During a Competitive Season With Bioelectrical Impedance Vector Analysis

2020 ◽  
Vol 15 (3) ◽  
pp. 361-367 ◽  
Author(s):  
Francesco Campa ◽  
Catarina N. Matias ◽  
Elisabetta Marini ◽  
Steven B. Heymsfield ◽  
Stefania Toselli ◽  
...  
Keyword(s):  
Phase Angle ◽  
Body Fluid ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Fat Free Mass ◽  
Vector Analysis ◽  
Bioelectrical Impedance Vector Analysis ◽  
Competitive Season ◽  
Impedance Vector ◽  
Total Body

Purpose: To analyze the association between body fluid changes evaluated by bioelectrical impedance vector analysis and dilution techniques over a competitive season in athletes. Methods: A total of 58 athletes of both sexes (men: age 18.7 [4.0] y and women: age 19.2 [6.0] y) engaging in different sports were evaluated at the beginning (pre) and 6 months after (post) the competitive season. Deuterium dilution and bromide dilution were used as the criterion methods to assess total body water (TBW) and extracellular water (ECW), respectively; intracellular water (ICW) was calculated as TBW–ECW. Bioelectrical resistance and reactance were obtained with a phase-sensitive 50-kHz bioelectrical impedance analysis device; bioelectrical impedance vector analysis was applied. Dual-energy X-ray absorptiometry was used to assess fat mass and fat-free mass. The athletes were empirically classified considering TBW change (pre–post, increase or decrease) according to sex. Results: Significant mean vector displacements in the postgroups were observed in both sexes. Specifically, reductions in vector length (Z/H) were associated with increases in TBW and ICW (r = −.718, P < .01; r = −.630, P < .01, respectively) and decreases in ECW:ICW ratio (r = .344, P < .05), even after adjusting for age, height, and sex. Phase-angle variations were positively associated with TBW and ICW (r = .458, P < .01; r = .564, P < .01, respectively) and negatively associated with ECW:ICW (r = −.436, P < .01). Phase angle significantly increased in all the postgroups except in women in whom TBW decreased. Conclusions: The results suggest that bioelectrical impedance vector analysis is a suitable method to obtain a qualitative indication of body fluid changes during a competitive season in athletes.

Phase angle by bioelectrical impedance vector analysis as predictor of prolonged hospital stay

2017 ◽  
Author(s):  
Leslie Verdeja-Vendrell ◽  
Dulce Gonzalez-Islas ◽  
Arturo Orea-Tejeda ◽  
Ana Grecia Navarrete-Penaloza ◽  
Rocio Sanchez-Santillan ◽  
...  
Keyword(s):  
Hospital Stay ◽  
Phase Angle ◽  
Bioelectrical Impedance ◽  
Vector Analysis ◽  
Prolonged Hospital Stay ◽  
Bioelectrical Impedance Vector Analysis ◽  
Impedance Vector ◽  
Prolonged Hospital

Phase angle and bioelectrical impedance vector analysis in the evaluation of body composition in athletes

2020 ◽  
Vol 39 (2) ◽  
pp. 447-454 ◽  
Author(s):  
Elisabetta Marini ◽  
Francesco Campa ◽  
Roberto Buffa ◽  
Silvia Stagi ◽  
Catarina N. Matias ◽  
...  
Keyword(s):  
Body Composition ◽  
Phase Angle ◽  
Bioelectrical Impedance ◽  
Vector Analysis ◽  
Bioelectrical Impedance Vector Analysis ◽  
Impedance Vector

scholarly journals Ethnic differences in fat and muscle mass and their implication for interpretation of bioelectrical impedance vector analysis

2019 ◽  
Vol 44 (6) ◽  
pp. 619-626 ◽  
Author(s):  
Björn Jensen ◽  
Takashi Moritoyo ◽  
Martha Kaufer-Horwitz ◽  
Sven Peine ◽  
Kristina Norman ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Body Composition ◽  
Muscle Mass ◽  
Phase Angle ◽  
Ethnic Differences ◽  
Bioelectrical Impedance ◽  
World Health ◽  
Vector Analysis ◽  
Bioelectrical Impedance Vector Analysis ◽  
Impedance Vector

According to the World Health Organization Expert Consultation, current body mass index (BMI) cut-offs should be retained as an international classification. However, there are ethnic differences in BMI-associated health risks that may be caused by differences in body fat or skeletal muscle mass and these may affect the interpretation of phase angle and bioelectrical impedance vector analysis (BIVA). Therefore, the aim of this study was to compare body composition measured by bioelectrical impedance analysis among 1048 German, 1026 Mexican, and 995 Japanese adults encompassing a wide range of ages and BMIs (18–78 years; BMI, 13.9–44.3 kg/m2). Regression analyses between body composition parameters and BMI were used to predict ethnic-specific reference values at the standard BMI cut-offs of 18.5, 25, and 30 kg/m2. German men and women had a higher fat-free mass per fat mass compared with Mexicans. Normal-weight Japanese were similar to Mexicans but approached the German phenotype with increasing BMI. The skeletal muscle index (SMI, kg/m2) was highest in Germans, whereas in BIVA, the Mexican group had the longest vector, and the Japanese group had the lowest phase angle and the highest extracellular/total body water ratio. Ethnic differences in regional partitioning of fat and muscle mass at the trunk and the extremities contribute to differences in BIVA and phase angle. In conclusion, not only the relationship between BMI and adiposity is ethnic specific; in addition, fat distribution, SMI, and muscle mass distribution vary at the same BMI. These results emphasize the need for ethnic-specific normal values in the diagnosis of obesity and sarcopenia.

scholarly journals Bioelectrical impedance vector analysis and phase angle in boys with Duchenne muscular dystrophy

2019 ◽  
Vol 63 (0) ◽  
Author(s):  
Karina M. Vermeulen ◽  
Márcia M. G. D. Lopes ◽  
Evellyn C. Grilo ◽  
Camila X. Alves ◽  
Richele J. A. Machado ◽  
...  
Keyword(s):  
Duchenne Muscular Dystrophy ◽  
Muscular Dystrophy ◽  
Phase Angle ◽  
Bioelectrical Impedance ◽  
Vector Analysis ◽  
Bioelectrical Impedance Vector Analysis ◽  
Impedance Vector

scholarly journals Bioelectrical Impedance Vector Analysis and Phase Angle on Different Oral Zinc Supplementation in Eutrophic Children: Randomized Triple-Blind Study

Nutrients ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1215 ◽  
Author(s):  
Karina M. Vermeulen ◽  
Márcia Marília G. D. Lopes ◽  
Camila X. Alves ◽  
Naira J. N. Brito ◽  
Maria das Graças Almeida ◽  
...  
Keyword(s):  
Cell Membrane ◽  
Phase Angle ◽  
Cell Mass ◽  
Serum Zinc ◽  
Bioelectrical Impedance ◽  
Vector Analysis ◽  
Body Cell Mass ◽  
Body Cell ◽  
Bioelectrical Impedance Vector Analysis ◽  
Impedance Vector

The parameters derived from bioelectrical impedance, phase angle (PA) and bioelectrical impedance vector analysis (BIVA) have been associated with cell membrane integrity and body cell mass. Zinc is a micronutrient that exerts important structural functions and acts in maintaining cellular functionality. To evaluate cell integrity and body cell mass, PA and BIVA were evaluated in children orally supplemented with zinc at different concentrations. Anthropometric, bioelectrical (resistance and reactance) and serum zinc variables were collected from two randomized, triple-blind, controlled clinical trials. Sampling was composed of 71 children consisting of three groups: a control group who received a placebo and two experimental groups who received oral supplementation of 5 or 10 mg-Zn/day for three months. The three groups presented increases (p < 0.001) in the linear height and weight. In the group supplemented with 10 mg-Zn/day, there was an increase in reactance values (p = 0.036) and PA (p = 0.002), in addition to vector displacement (p < 0.001) in relation to the confidence ellipses. An increase in serum zinc concentration was found (p < 0.001) in all three groups. Whit this, the supplementation with 10 mg-Zn/day promotes changes in the integrity of the cell membrane associated with the increase in the cellular mass of healthy children.

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