Does Body Position Influence Bioelectrical Impedance? An Observational Pilot Study

Więch, Paweł; Wołoszyn, Filip; Trojnar, Patrycja; Skórka, Mateusz; Bazaliński, Dariusz

doi:10.3390/ijerph19169908

Cited by 9 publications

(7 citation statements)

References 46 publications

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“…It is necessary to consider the position in which the impedance measurement is performed. Wiech et al ( 60 ) demonstrated differences between measurements in the lying, sitting, and standing positions, and they analyzed their data by considering sex. In men, there was a significant difference in PhA when it was measured in the sitting position (7.23 ± 1.40) compared with the standing position (6.27 ± 0.68) ( p = 0.020).…”

Section: Discussionmentioning

confidence: 99%

Association between phase angle and the nutritional status in pediatric populations: a systematic review

Franco-Oliva,

Ávila-Nava,

Rodríguez-Aguilar

et al. 2023

Front. Nutr.

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Background and aimsMalnutrition is prevalent in pediatric populations with any disease, and it is also related to changes in body composition. In addition, recent studies have documented relationships between these changes and phase angle (PhA), an important parameter of functional nutritional assessment. PhA could be a new marker of nutritional status. Many studies have generated information about the association between PhA and malnutrition in various pathologies, although the vast majority of this information is from adult populations. In this systematic review, we answered the following question: What is the association between PhA and the nutritional status in pediatric populations?MethodsWe performed a systematic search of the Medline/PubMed and Latin American and Caribbean Health Sciences Literature databases (LILACS) databases for studies published up to October 2022. The inclusion criteria were pediatric subjects, which reported the relationship between PhA and the nutritional status with any objective nutritional indicator, and PhA was measured by electric impedance and reported at 50 kHz. We synthesized data from the studies that reported cutoff analysis of PhA with receiver operating characteristic (ROC) curves, mean PhA values presented by nutritional status strata, and correlations between PhA and nutritional status indicators. We assessed the risk of bias by using the Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies and the Quality Assessment for Diagnostic Accuracy Studies.ResultsOf the 126 studies we identified, 15 met the inclusion criteria. The included studies reported the association between PhA and objective indicators of nutritional status, including weight-for-age z-score (WAZ) <-1 standard deviation (SD) for malnutrition, height-for-age z-score (HAZ) for malnutrition-stunting, body mass index (BMI) for the starvation state, body mass index z-score (BMIz) and BMI for malnutrition, mid-upper arm circumference (MUAC) <11 cm for severe acute malnutrition (SAM), and fat-free mass index z-score (FFMIz) <-2 z-score for moderate malnutrition, among others. The report of these associations between PhA and nutritional status was based on cutoff points generated with ROC curve analysis or comparison of mean PhA values, which were reported stratified by the presence or absence of malnutrition, and correlations between PhA and anthropometric indicators for the evaluation of the nutritional status in the pediatric population. It was difficult to compare the studies due to the heterogeneity of the bioelectrical impedance analysis models used, how PhA was reported (standardized, percentiles, or degrees), and the anthropometric indicators used to diagnose malnutrition.ConclusionThe early identification of malnutrition is relevant to establish the correct nutritional treatment; PhA appears to be a sensitive indicator of nutritional status and is easy to obtain. Although the results of this review are inadequate to establish PhA cutoff points associated with malnutrition in pediatric populations, in most of the studies, there was an association between PhA and objective indicators of nutritional status.Systematic review registrationhttps://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022362413, identifier: PROSPERO 2022 CRD42022362413.

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Section: Discussionmentioning

confidence: 99%

Association between phase angle and the nutritional status in pediatric populations: a systematic review

Franco-Oliva,

Ávila-Nava,

Rodríguez-Aguilar

et al. 2023

Front. Nutr.

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“…There is evidence that PhA measurements can vary according to the measuring device and body position at the time of assessment (standing vs. supine) [ 44 ]. During this research, all measurements were made standing to avoid variance.…”

Section: Discussionmentioning

confidence: 99%

“…The use of the Inbody 770 device as a meter is validated against the gold standard DEXA with 98% correlation [ 43 ]. The measurements were taken standing up because research has shown that position from which the PhA is taken interferes with some of the values, so the way in which the bioimpedance was measured should always be known [ 44 ]. The PhA is compounded by two elements: the reactance (X) and the resistance (R).…”

Section: Methodsmentioning

confidence: 99%

Association between Phase Angle and Subjective Perceptions of Health Variables in Cancer Patients

et al. 2023

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The phase angle, an increasingly studied healthcare tool, was studied to explore its relationship with psychological factors in cancer patients. The aim of this study was to investigate the relationship between the phase angle (PhA), obtained by the bioimpedance analysis of body composition, and psychological factors measured by questionnaire in cancer patients. The study included 311 patients who underwent bioimpedance testing to determine their PhA value; their psychological profiles were assessed using SF-36, FACIT, QLQ-C30, and GHQ-12 questionnaires. Mixed linear regression models were used to analyze the relationship between PhA and the psychological tests. The results showed a statistical correlation between PhA and the GHQ-12, FACIT, and SF-36 questionnaires, with higher PhA values associated with better results on the questionnaires. In the QLQ-C30 questionnaire, a correlation was observed between PhA and the functioning scales (p < 0.001), except for emotional and cognitive functioning (p = 0.148 and p = 0.544, respectively), but not in most of the symptom scales. The PhA is a useful tool for assessing the subjective health perception of cancer patients, especially with regard to psychological factors. While there is a statistically significant correlation, further research is required before confidently applying it in clinical practice. The current predictive value of this predictor for certain psychological aspects is limited, underscoring the need for additional research.

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“…Disposable electrodes (Biatrodes, Pontassieve, Fl, Italy: single electrode impedance -25-30 Ω, compliance with Directive 93/42/ECC and ISO 10993-1:2003) were placed on the dorsal surface of the upper limb (wrist joint) and lower limb (ankle joint). All measurements were performed according to guidelines described by other authors [19][20][21][22][23]. Measurements were taken by a medic with experience in the method.…”

Section: Methodsmentioning

confidence: 99%

Monitoring of nutritional status in patients with pressure injuries using the phase angle as an indicator – a study of two cases

Skórka,

Bazaliński,

Więch

et al. 2024

pcia

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Introduction: Bioelectrical impedance (BIA) is one of the most widely used indirect methods for assessing human body composition. The phase angle (PhA) as its derivative is considered an indicator of cellular health and monitoring of nutritional status. Due to its safety and reproducibility, it can be used as a prognostic indicator in disease, the assessment of mortality risk, and the effectiveness of nutritional interventions, as reflected in an increasing number of scientific studies. The aim of the study was to assess nutritional status using the PhA indicator in the course of treatment in two patients with pressure injuries.Material and methods: Two patients with pressure injuries were selected to have three consecutive BIA tests, from which the PhA indicator was calculated. In the subsequent three measurements, it was assessed, correlating this with the local wound condition on the day of the measurements taken.Results: After the initial assessment, nutritional intervention was implemented simultaneously with medical and nursing interventions resulting from the wound care plan, observing a systematic increase in PhA parameters starting from the values: Patient I -3.2; Patient II -3.3 during the first examination. Subsequently, after 4 and 16 months in the final measurements, the PhA was 5.3° in Patient I and 4.5° in Patient II, which equated to full wound healing, as well as a significant improvement in the nutritional status of the patients compared to the baseline prior to implementing professional care.Conclusions: The assessment of nutritional status should be one of the pillars of a comprehensive examination of a patient with a chronic wound, while also being a determinant of the recovery process. In the cases presented, the correlation between wound condition and the importance played by the PhA can be seen without any doubt. Its increase influences and enhances the regenerative processes within the wound as well as the patient's overall pro-health status. Further studies with a larger group of patients are needed to demonstrate and confirm the multifaceted impact of the use of the above-mentioned indicator in the treatment of chronic wounds.

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Does Body Position Influence Bioelectrical Impedance? An Observational Pilot Study

Cited by 9 publications

References 46 publications

Association between phase angle and the nutritional status in pediatric populations: a systematic review

Association between phase angle and the nutritional status in pediatric populations: a systematic review

Association between Phase Angle and Subjective Perceptions of Health Variables in Cancer Patients

Monitoring of nutritional status in patients with pressure injuries using the phase angle as an indicator – a study of two cases

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