Postural variations in Cardio Stress Index scores

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dc.contributor.author Persad, L. Bagwath
dc.contributor.author Govender, Catherine
dc.contributor.author Soma, Prashilla
dc.contributor.author Du Toit, Peet J.
dc.contributor.author Kruger, P.E. (Pieter Ernst)
dc.contributor.author Grant, C.C. (Catharina Cornelia)
dc.contributor.author Wood, Paola Silvia
dc.date.accessioned 2012-05-29T14:57:36Z
dc.date.available 2014-03-31T00:20:05Z
dc.date.issued 2012-03
dc.description.abstract Numerous factors influence heart rate variability, including age, exercise and posture. The Cardio Stress Index (CSI) is a transformed measure of heart rate variability that is determined via a miniature digital multi-channel electrocardiogram system. Although the CSI and heart rate variability are reportedly analogous, little is known about how the two concepts compare in peer-reviewed research. The aim of this study was to examine the differences between CSI and heart rate as measured on a mini- electrocardiogram device when subjects were sitting upright and when they were lying down (in supine position). This is a case-series study with no intervention or follow-up. Sitting and supine CSI and heart rate readings were compared in a random sample of 55 women volunteers recruited through advertising in Pretoria, South Africa. The mean age of the sample was 25.01 years (SD = 7.56). After completing a biographical questionnaire, subjects’ CSI and heart rates were evaluated using a digital medical device, the ViportTM. The combined CSI for the group was elevated above the normative value of 20% (31.00%; SD = 14.03). The seated, supine and combined CSI all differed significantly from one another (p<0.05) and the CSI was significantly correlated with heart rate (p=0.41). In conclusion, the CSI readings, like heart rate variability measurements taken in different postures, cannot be used interchangeably in clinical practice or in research. The CSI appears to mirror existing research evidence on heart rate variability and posture. en_US
dc.description.uri http://www.ajol.info/journal_index.php?jid=153&ab=ajpherd en_US
dc.identifier.citation Persad, L.B., Govender, C., Soma, P., Du Toit, P.J., Krüger, P.E., M., Grant, C.C. & Wood, P.S. (2012). Postural variations in Cardio Stress Index scores. African Journal for Physical, Health Education, Recreation and Dance, March (Supplement), 90-98. en_US
dc.identifier.issn 1117-4315
dc.identifier.uri http://hdl.handle.net/2263/18990
dc.language.iso en en_US
dc.publisher Africa Association for Health, Physical Education, Recreation, Sport and Dance en_US
dc.rights Africa Association for Health, Physical Education, Recreation, Sport and Dance. en_US
dc.subject Heart rate en_US
dc.subject Heart rate variability en_US
dc.subject Cardio stress index en_US
dc.subject Autonomic activity en_US
dc.subject Posture en_US
dc.subject Cardio Stress Index (CSI) en_US
dc.title Postural variations in Cardio Stress Index scores en_US
dc.type Article en_US


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