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Comparison of Polar RS800CX heart rate monitor and electrocardiogram for measuring inter-beat intervals in healthy dogs
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiotherapy.
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2015 (English)In: Physiology and Behavior, ISSN 0031-9384, E-ISSN 1873-507X, Vol. 138, p. 247-253Article in journal (Refereed) Published
Abstract [en]

The aim of the present study was to assess the criterion validity, relative reliability and level of agreement of Polar RS800CX heart rate monitor measuring inter-beat intervals (IBIs), compared to simultaneously recorded electrocardiogram (ECG) in dogs. METHODS: Five continuous minutes of simultaneously recorded IBIs from Polar RS800CX and Cardiostore ECG in 11 adult healthy dogs maintaining standing position were analyzed. Polar data was statistically compared to ECG data to assess for systematic differences between the methods. Three different methods for handling missing IBI data were used. Criterion validities were calculated by intraclass correlation coefficients (ICCs) and corresponding 95% confidence intervals (CIs). Relative reliabilities and levels of agreement were calculated by ICCs and the Bland and Altman analysis for repeated measurements per subject. RESULTS: Correlation coefficients between IBI data from ECG and Polar RS800CX varied between 0.73 and 0.84 depending on how missing values were handled. Polar was over- and underestimating IBI data compared to ECG. The mean difference in log transformed (base10) IBI data was 0.8%, and 93.2% of the values were within the limits of agreement. Internally excluding three subjects presenting IBI series containing more than 5% erroneous IBIs resulted in ICCs between 0.97 and 0.99. Bland and Altman analysis (n=8) showed mean difference was 1.8ms, and 98.5% of the IBI values were plotted inside limits of agreement. CONCLUSION: This study showed that Polar systematically biased recorded IBI series and that it was fundamental to detect measurement errors. For Polar RS800CX heart rate monitor to be used interchangeably to ECG, by showing excellent criterion validity and reliable IBI measures in group and individual samples, only less than 5% of artifacts could be accepted.

Place, publisher, year, edition, pages
2015. Vol. 138, p. 247-253
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:uu:diva-239083DOI: 10.1016/j.physbeh.2014.10.034ISI: 000348882900034PubMedID: 25446208OAI: oai:DiVA.org:uu-239083DiVA, id: diva2:776051
Available from: 2015-01-06 Created: 2014-12-18 Last updated: 2018-01-11Bibliographically approved
In thesis
1. On assessment methods related to pain in dogs with osteoarthritis
Open this publication in new window or tab >>On assessment methods related to pain in dogs with osteoarthritis
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

There is a need of valid and reliable assessment methods that are clinically applicable in canine rehabilitation practice. The aim of this thesis was to psychometrically evaluate measurement properties in assessment methods related to pain in naturally occurring canine osteoarthritis. Assessment methods developed for heart rate variability analysis, i.e. Polar heart rate monitor, and owner-reported perceptions of pain severity and pain interference with functionality, i.e. Canine Brief Pain Inventory, were tested.

Methods: Four observational studies were conducted. Study I was a cross-sectional study consisting of two groups of consecutively recruited dogs. The Canine Brief Pain Inventory was administered to owners of dogs with naturally occurring osteoarthritis (n=61) and clinically sound dogs (n=21). Study II was a descriptive and correlative cross-sectional study based on the same sample of dogs with osteoarthritis (n=71), assessing chronic pain behavior and associations between explanatory variables and chronic pain behavior. Study III and IV were correlative studies, assessing Polar heart rate monitor measuring interbeat intervals and time- and frequency-based heart rate variability parameters, compared to simultaneously recorded electrocardiogram in dogs (n=11).

Results: High internal consistencies and ability to discriminate sound dogs from osteoarthritis dogs were found. The hypothesis of the presented two-factor structure of the Canine Brief Pain Inventory was rejected. Owners reported higher proportions of chronic pain behavior in items targeting physical activities, e.g. getting up, moving after rest and moving after major exercise. A minor proportion of dogs with osteoarthritis showed no owner-perceived behavioural signs of chronic pain. Owner observations were not associated with ongoing antiinflammatory medications. In Study III and IV, 595 errors (12.3%) were identified in Polar data. The number of errors were unequally distributed among the dogs. Interbeat intervals and heart rate variability parameters from electrocardiogram and Polar were strongly associated. Standard error of measurements were high among some heart rate variability parameters in Polar and electrocardiogram.

In conclusion, this thesis contributes to our knowledge about assessment methods related to diverse components of pain in dogs with osteoarthritis, allowing improved pain management in clinical practice.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2018. p. 70
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 1415
Keywords
assessment methods, behavior, canine, chronic pain, heart rate variability, measurement properties, osteoarthritis, physiotherapy, rehabilitation
National Category
Physiotherapy Veterinary Science
Research subject
Physiotherapy
Identifiers
urn:nbn:se:uu:diva-334679 (URN)978-91-513-0199-0 (ISBN)
Public defence
2018-02-16, Gustavianum, Akademigatan 3,753 10 Uppsala, Uppsala, 10:00 (Swedish)
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Supervisors
Available from: 2018-01-26 Created: 2017-12-05 Last updated: 2018-03-07

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Essner, AnnZetterberg, LenaHellström, Karin

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