scholarly journals Phase Angle from Bioelectric Impedance and Maturity-Related Factors in Adolescent Athletes: A Systematic Review

2020 ◽  
Vol 12 (12) ◽  
pp. 4806 ◽  
Author(s):  
Aline Ferreira de Araújo Jerônimo ◽  
Nuno Batalha ◽  
Daniel Collado-Mateo ◽  
Jose Alberto Parraca
Keyword(s):  
Systematic Review ◽  
Phase Angle ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Maturation Stage ◽  
Cell Integrity ◽  
Adolescent Athletes ◽  
Eligibility Criteria ◽  
Related Factors ◽  
Cross Sectional

Phase angle (PhA) is a body composition (BC) parameter from bioelectrical impedance analysis that is suggested as a marker of cell integrity and general health. In adolescent athletes, PhA values are used to monitor the effects of training and competitions and seem to vary according to age, having an upward trajectory during puberty. Since adolescence is a period composed of maturation stages, the aim of this systematic review was to investigate the relationship between PhA and maturation stage in adolescent athletes. A search was conducted in PubMed/MEDLINE, BVS, Web of Science (WOS), Scopus, Science Direct, and Academic Search Complete (EBSCO) databases up to May 2020. Eligibility criteria followed the PICOS strategy and studies with healthy athletes aged 10–19 years of any level of competition were included. Six cross-sectional studies and two longitudinal studies met the inclusion criteria. Results showed that early and mature athletes have higher PhA than those who are non-matured or maturated late. Thus, PhA is influenced by the pubertal status. Considering BC is one of the factors influencing sports performance together with its growth-related changes, practitioners may use PhA values in BC analysis of adolescent athletes.

scholarly journals Bioelectrical impedance analysis (BIA) -derived phase angle in sarcopenia: A systematic review

2020 ◽  
Author(s):  
Olivia Di Vincenzo ◽  
Maurizio Marra ◽  
Ada Di Gregorio ◽  
Fabrizio Pasanisi ◽  
Luca Scalfi
Keyword(s):  
Systematic Review ◽  
Phase Angle ◽  
Bioelectrical Impedance Analysis ◽  
Bioelectrical Impedance ◽  
Impedance Analysis

scholarly journals Bioelectrical impedance analysis of body composition for the anesthetic induction dose of propofol in older patients

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ana M. Araújo ◽  
Humberto S. Machado ◽  
Amílcar C. Falcão ◽  
Patrício Soares-da-Silva
Keyword(s):  
Phase Angle ◽  
Older Patients ◽  
Bioelectrical Impedance Analysis ◽  
Bioelectrical Impedance ◽  
Total Body Weight ◽  
Impedance Analysis ◽  
Fat Free Mass ◽  
Cross Sectional ◽  
Old Patients ◽  
Induction Dose

Abstract Background Older people are currently the fastest growing segment of the worldwide population. The present study aimed to estimate propofol dose in older patients based on size descriptors measured by bioelectrical impedance analysis (BIA). Methods A cross sectional study in adult and older patients with body mass index equal to or lower than 35 kg/m2 was carried out. BIA and Clinical Frail Scale scoring were performed during pre-operative evaluation. Propofol infusion was started at 2000 mg/h until loss of consciousness (LOC) which was defined by “loss of eye-lash reflex” and “loss of response to name calling”. Total dose of propofol at LOC was recorded. Propofol plasma concentration was measured using gas chromatography/ion trap-mass spectrometry. Results Forty patients were enrolled in the study. Total propofol dose required to LOC was lower in Age ≥ 65 group and a higher plasma propofol concentration was measured in this group. 60% of old patients were classified as “apparently vulnerable” or “frail” and narrow phase angle values were associated with increasing vulnerability scores. In the Age ≥ 65 group, the correlation analysis showed that the relationship between propofol dose and total body weight (TBW) scaled by the corresponding phase angle value is stronger than the correlation between propofol dose and TBW or fat free mass (FFM). Conclusions This study demonstrates that weight-based reduction of propofol is suitable in older patients; however FFM was not seen to be more effective than TBW to predict the propofol induction dose in these patients. Guiding propofol induction dose according to baseline frailty score should also be considered to estimate individualized dosage profiles. Determination of phase angle value appears to be an easy and reliable tool to assess frailty in older patients. Trial registration ClinicalTrials.gov Identifier: NCT02713698. Registered on 23 February 2016.

scholarly journals Nutritional assessment in patients with cirrhosis

2012 ◽  
Vol 49 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Sabrina Alves Fernandes ◽  
Lilian Bassani ◽  
Flávia Feijó Nunes ◽  
Maria Eugênia Deutrich Aydos ◽  
Alexandro Vaesken Alves ◽  
...  
Keyword(s):  
Phase Angle ◽  
Nutritional Assessment ◽  
Negative Impact ◽  
Characteristic Curve ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Assessment Method ◽  
Receiver Operator Characteristic Curve ◽  
Cross Sectional ◽  
Cirrhotic Patients

CONTEXT: Malnutrition in cirrhotic patients with end-stage disease is common, and the degree of nutritional debilitation can play an important role in the pathogenesis of complications and cause a negative impact on prognosis. However, it involves difficulties and controversies regarding the identification of the best nutritional assessment method. OBJECTIVE: To identify a method that provides a safe and effective nutritional diagnosis. METHODS: Cross-sectional study with 129 cirrhotic patients. Anthropometric measurements, subjective global assessment, hand grip strength and bioelectrical impedance. RESULTS: Through phase angle of bioelectrical impedance analysis (BIA) method, significant associations with Child-Pugh (P = 0.008), age group and gender were observed. The ROC (receiver operator characteristic) curve was generated to determine the best cutoff point of the phase angle of cirrhotic patients, serving as one of the reference parameters for the nutritional assessment with bioimpedance in this study, considering the classification through Child-Pugh score as the reference standard for the clinical conditions of patients with cirrhosis. CONCLUSIONS: The assessment through bioelectrical impedance presented a statistically significant correlation with Child-Pugh score. The identification of phase angle of 5.44º is the new parameter suggested for the classification of the nutritional conditions of cirrhotic patients.

scholarly journals Malnutrition-Inflammation Score VS Phase Angle in the Era of GLIM Criteria: A Cross-Sectional Study among Hemodialysis Patients in UAE

Nutrients ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2771 ◽  
Author(s):  
Mirey Karavetian ◽  
Nada Salhab ◽  
Rana Rizk ◽  
Kalliopi Anna Poulia
Keyword(s):  
Phase Angle ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Cross Sectional Study ◽  
Diagnostic Tools ◽  
Cross Sectional ◽  
Increased Risk ◽  
Cutoff Points ◽  
Gender Specific ◽  
Inflammation Score

(1) Background: Malnutrition is prevalent in hemodialysis (HD) patients and is associated with an increased risk of morbidity and mortality. The aim of this study was to explore the prevalence of malnutrition using the malnutrition-inflammation score (MIS) and phase angle (PhA) and compare their concordance with the new Global Leadership Initiative on Malnutrition (GLIM) criteria for the diagnosis of malnutrition. (2) Methods: Seventy HD patients were assessed. Malnutrition was diagnosed based on the GLIM criteria and MIS questionnaire. The agreement between the diagnostic tools (MIS, PhA derived from the bioelectrical impedance analysis (BIA), and GLIM criteria) was assessed. The optimal gender-specific cutoff points were identified for the PhA according to the GLIM criteria. (3) Results: Almost half of the sample was diagnosed as malnourished according to the MIS (48.57%) and GLIM criteria (54.29%). A fair agreement was observed between the GLIM criteria, MIS (k = 0.202), and PhA (k = 0.279) among the malnourished patients. The PhA had better sensitivity but worse specificity compared to the MIS. The optimum cutoff points of PhA to detect malnutrition according to the GLIM criteria were a PhA value of ≤5.7° for males and ≤3.8° for females. (4) Conclusion: The MIS performed slightly better than PhA in the diagnosis of malnutrition among HD patients within the spectrum of the GLIM criteria.

Association between phase angle from bioelectrical impedance analysis and level of physical activity: Systematic review and meta-analysis

2019 ◽  
Vol 38 (4) ◽  
pp. 1504-1510 ◽  
Author(s):  
Eduardo Mundstock ◽  
Marina Azambuja Amaral ◽  
Rafael R. Baptista ◽  
Edgar E. Sarria ◽  
Rejane Rosaria Grecco dos Santos ◽  
...  
Keyword(s):  
Physical Activity ◽  
Systematic Review ◽  
Phase Angle ◽  
Bioelectrical Impedance Analysis ◽  
Meta Analysis ◽  
Bioelectrical Impedance ◽  
Impedance Analysis

scholarly journals Estimating thigh skeletal muscle volume using multi-frequency segmental-bioelectrical impedance analysis

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Masashi Taniguchi ◽  
Yosuke Yamada ◽  
Masahide Yagi ◽  
Ryusuke Nakai ◽  
Hiroshige Tateuchi ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Phase Angle ◽  
Model Fitting ◽  
Muscle Thickness ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Muscle Volume ◽  
Thigh Muscle ◽  
Slice Thickness ◽  
Cross Sectional

Abstract Background The primary aim of this study was to investigate whether using the extracellular water/intracellular water (ECW/ICW) index and phase angle combined with segmental-bioimpedance analysis (BIA) improved the model fitting of skeletal muscle volume (SMV) estimation. The secondary aim was to compare the accuracy of segmental-BIA with that of ultrasound for estimating the quadriceps SMV measured with MRI. Methods Seventeen young men (mean age, 23.8 ± 3.3 years) participated in the study. The T-1 weighted images of thigh muscles were obtained using a 1.5 T magnetic resonance imaging (MRI) scanner. Thigh and quadriceps SMVs were calculated as the sum of the products of anatomical cross-sectional area and slice thickness of 6 mm across all slices. Segmental-BIA was applied to the thigh region, and data on the 50-kHz bioelectrical impedance (BI) index, ICW index, ECW/ICW index, and phase angle were obtained. The muscle thickness index was calculated as the product of the mid-thigh muscle thickness, determined using ultrasound, and thigh length. The standard error of estimate (SEE) of the regression equation was calculated to determine the model fitting of SMV estimation and converted to %SEE by dividing the SEE values by the mean SMV. Results Multiple regression analysis indicated that the combination of 50-kHz BI and the ECW/ICW index or phase angle was a significant predictor when estimating thigh SMV (SEE = 7.9 and 8.1%, respectively), but were lower than the simple linear regression (SEE = 9.4%). The ICW index alone improved the model fitting for the estimation equation (SEE = 7.6%). The model fitting of the quadriceps SMV with the 50-kHz BI or ICW index was similar to that with the skeletal muscle thickness index measured using ultrasound (SEE = 10.8, 9.6 and 9.7%, respectively). Conclusions Combining the traditionally used 50-kHz BI index with the ECW/ICW index and phase angle can improve the model fitting of estimated SMV measured with MRI. We also showed that the model suitability of SMV estimation using segmental-BIA was equivalent to that on using ultrasound. These data indicate that segmental-BIA may be a useful and cost-effective alternative to the gold standard MRI for estimating SMV.

scholarly journals Bioelectrical impedance phase angle in sport: a systematic review

2019 ◽  
Vol 16 (1) ◽  
Author(s):  
Olivia Di Vincenzo ◽  
Maurizio Marra ◽  
Luca Scalfi
Keyword(s):  
Systematic Review ◽  
Phase Angle ◽  
Female Athletes ◽  
Cell Mass ◽  
Bioelectrical Impedance ◽  
Sport Performance ◽  
Systematic Research ◽  
Cross Sectional ◽  
Large Variability ◽  
Elite Level

Abstract Background Phase angle (PhA) is a raw BIA variable that has been gaining attention in recent years because it is supposed to be an index of the ratio between extracellular and intracellular water, body cell mass, and cellular integrity. The aim of this systematic review was to evaluate the variability of PhA between different sports and its relationships with sport performance. Additionally, we investigated whether PhA depends on gender or age, and analyzed the differences between athletes and controls. Methods A systematic research using PubMed, Scopus and Web of Science up to June 2019 was performed. Selection criteria included studies on subjects who practice sports in planned and continuous modality at competitive or elite level. Results Thirty-five papers met the inclusion criteria (twenty-one cross-sectional data, fourteen longitudinal data). A few but convincing studies have shown that mean PhA is higher in athletes vs. controls. PhA increases with age and is likely to be higher in male than female athletes. A large variability in PhA is observed for the same sport, while it is still uncertain to what extent PhA differs between various sports. There are no clear relationships of PhA with sport performance or training/untraining. Conclusion It is still to be defined to what extent PhA varies between different sports and changes with training/untraining. It can be argued that for a given sport much more data should be collected in a systematic way and for a period of time appropriate in order to determine changes and trends. This is even more crucial in the case of intervention studies.

scholarly journals Bioelectrical Impedance Phase Angle: Utility in clinical practice

2012 ◽  
Vol 05 (03) ◽  
pp. 123-127 ◽  
Author(s):  
Pablo Gustavo de Oliveira ◽  
Amanda Senna Pereira dos Santos ◽  
Elza Daniel de Mello
Keyword(s):  
Clinical Practice ◽  
Phase Angle ◽  
Reference Values ◽  
Intact Cell ◽  
Cell Mass ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Assessment Method ◽  
Cell Integrity ◽  
Cellular Components

ABSTRACTThe choice of the best nutrition assessment method in hospitalized patients remains a challenge. The aim of this study was to review the use of phase angle (PA) in clinical practice. PA is a parameter obtained from bioelectrical impedance analysis, being a derived measure from the relationship between resistance and reactance. Because PA is dependent on body cell mass (BCM) and cell membrane functions, it has been considered a prognostic marker in several clinical conditions. BCM reflects the cellular components responsible for energy transfer and biochemical activity and is considered an excellent reference for expressing the rates of physiological processes, such as energy expenditure and proteolysis. Low PA values suggest cell death or decreased cell integrity, whereas higher PA values suggest a large amount of intact cell membranes, with a consequently better prognosis. The literature lacks studies determining PA reference values, which has prevented its use in routine clinical practice. Reference values are therefore necessary to properly evaluate possible deviations from the population mean.

scholarly journals Phase angle and Mediterranean diet in patients with acne: Two easy tools for assessing the clinical severity of disease

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Luigi Barrea ◽  
Marianna Donnarumma ◽  
Sara Cacciapuoti ◽  
Giovanna Muscogiuri ◽  
Ludovica De Gregorio ◽  
...  
Keyword(s):  
Body Composition ◽  
Mediterranean Diet ◽  
Phase Angle ◽  
Inflammatory Diseases ◽  
Bioelectrical Impedance ◽  
Dietary Factors ◽  
Clinical Severity ◽  
Control Group ◽  
Cross Sectional ◽  
Severe Acne

Abstract Background Acne is a chronic, inflammatory and debilitating skin disorder. Dietary factors and nutritional status are among the exacerbating factors of acne. Phase angle (PhA), a direct measure of Bioelectrical Impedance Analysis (BIA), represents an indicator of the chronic inflammatory state. The Mediterranean diet (MD) is a healthy dietary pattern that can exert anti-inflammatory effects in several inflammatory diseases. We aimed to investigate the difference in PhA and adherence to the MD and their associations with the severity of acne in a sample of naïve treatment patients with acne compared to control group. Materials In this cross-sectional, case–control, observational study, we enrolled 51 patients with acne and 51 control individuals. Body composition was evaluated by a BIA phase-sensitive system (50 kHz BIA 101 RJL, Akern Bioresearch, Florence, Italy, Akern). For adherence to the MD, we have used the PREvención con DIeta MEDiterránea (PREDIMED) questionnaire. The clinical severity of acne was assessed by using the global acne grading system (GAGS), a quantitative scoring system to assess acne severity. Results Patients with acne had a worse body composition, in particular smaller PhA (p = 0.003), and a lower adherence to the MD (p < 0.001) than the control group, in spite of no differences in gender, age and BMI between the two groups. Stratifying patients with acne according to GAGS categories, both PhA (p = 0.006) and PREDIMED score (p = 0.007) decreased significantly in severe acne than mild/moderate acne. The GAGS score was negative correlations with PhA (r = − 0.478, p < 0.001) and PREDIMED score (r = − 0.504, p < 0.001). The results of the multivariate analysis showed PhA and PREDIMED score were the major determinants of GAGS score (p < 0.001). The receiver operator characteristic (ROC) analysis reporting a value of PhA of ≤ 6.1° and a PREDIMED score of ≤ 9 identified patients with acne with the highest clinical severity of the disease. Conclusions Novel correlations were reported between PhA and the degree of adherence to the MD with acne severity. Of interest, PhA and PREDIMED scores might represent possible markers of the severity of acne in a clinical setting. This study highlights how a cooperation between dermatologist and nutritionists might provide a combination key in the complex management of acne patients.

scholarly journals Gender-specific analysis for the association between trunk muscle mass and spinal pathologies

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yusuke Hori ◽  
Masatoshi Hoshino ◽  
Kazuhide Inage ◽  
Masayuki Miyagi ◽  
Shinji Takahashi ◽  
...  
Keyword(s):  
Muscle Mass ◽  
Bioelectrical Impedance ◽  
Vertical Axis ◽  
Impedance Analysis ◽  
Poor Quality ◽  
Trunk Muscle ◽  
Sagittal Vertical Axis ◽  
Cross Sectional ◽  
Lower Trunk ◽  
Significant Difference

AbstractWe investigated the relationship between trunk muscle mass and spinal pathologies by gender. This multicenter cross-sectional study included patients aged ≥ 30 years who visited a spinal outpatient clinic. Trunk and appendicular muscle mass were measured using bioelectrical impedance analysis. The Oswestry Disability Index (ODI), visual analog scale (VAS) score for low back pain, sagittal vertical axis (SVA), and EuroQol 5 Dimension (EQ5D) score were investigated to evaluate spinal pathology. The association between trunk muscle mass and these parameters was analyzed by gender using a non-linear regression model adjusted for patients’ demographics. We investigated the association between age and trunk muscle mass. We included 781 men and 957 women. Trunk muscle mass differed significantly between men and women, although it decreased with age after age 70 in both genders. Lower trunk muscle mass was significantly associated with ODI, SVA, and EQ5D score deterioration in both genders; its association with VAS was significant only in men. Most parameters deteriorated when trunk muscle mass was < 26 kg in men and < 19 kg in women. Lower trunk muscle mass was associated with lumbar disability, spinal imbalance, and poor quality of life in both genders, with significant difference in muscle mass.

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