2019
DOI: 10.5935/abc.20190116
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Test-Retest Reliability of Non-Invasive Cardiac Output Measurement during Exercise in Healthy Volunteers in Daily Clinical Routine

Abstract: BackgroundThoracic bioreactance (TB), a noninvasive method for the measurement of cardiac output (CO), shows good test-retest reliability in healthy adults examined under research and resting conditions.ObjectiveIn this study, we evaluate the test-retest reliability of CO and cardiac power (CPO) output assessment during exercise assessed by TB in healthy adults under routine clinical conditions.Methods25 test persons performed a symptom-limited graded cycling test in an outpatient office on two different days … Show more

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Cited by 4 publications
(4 citation statements)
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References 48 publications
(72 reference statements)
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“…The repeated data from PLA were averaged to determine the coefficient of variation (CV) and SWC for each cardiovascular parameter. The SWC was calculated multiplying the SD by 0.6 to account for higher variability of physiological parameters (Barroso et al, 2019). All data were reported as mean ± SD unless stated otherwise.…”
Section: Discussionmentioning
confidence: 99%
“…The repeated data from PLA were averaged to determine the coefficient of variation (CV) and SWC for each cardiovascular parameter. The SWC was calculated multiplying the SD by 0.6 to account for higher variability of physiological parameters (Barroso et al, 2019). All data were reported as mean ± SD unless stated otherwise.…”
Section: Discussionmentioning
confidence: 99%
“…All data were measured beat-by-beat. For the bioreactance analyses, validity and reliability are r = 0.82 ( 47 ) and ICC = 0.59–0.98 ( 48 ), respectively.…”
Section: Methodsmentioning
confidence: 99%
“…While our study increases the knowledge on central and peripheral factors of oxygen uptake, few limitations should be acknowledged. Firstly, the reliability of the applied bioreactance analysis and near-infrared spectroscopy decreases with increasing load ( 48 , 49 ), which may have had an impact on our outcomes. Especially in the context of the applied bioreactance analysis, as a non-invasive and continuous approach to measure cardiac output, its validity is still controversially discussed ( 66 ).…”
Section: Limitationsmentioning
confidence: 99%
“…Regarding ergospirometry however, only few studies described how they cleaned outliers when using therefrom derived measures. In a study aiming to evaluate testretest reliability of certain cardiopulmonary parameters, Barroso et al (2019) labelled values above ✕ ✖ ✗ ✘ ✙ and below ✕ -✗ ✘ ✙ as measurement errors (where ✕ and ✙ correspond to the arithmetic mean and standard deviation of the entire trial, respectively, and k = 1 is a pre-defined factor). Mapelli et al (2022) used a so-called interquartile range criterion, excluding observations above q0.75 + k * IQR and below q0.25 ✦ k * IQR (where q0.…”
Section: Introductionmentioning
confidence: 99%