Resting heart rate, physiological stress and disadvantage in Aboriginal and Torres Strait Islander Australians: analysis from a cross-sectional study

Zhang, Alice, Hughes, Jaquelyne T., Brown, Alex, Lawton, Paul D., Cass, Alan, Hoy, Wendy, O'Dea, Kerin and Maple-Brown, Louise J. (2016) Resting heart rate, physiological stress and disadvantage in Aboriginal and Torres Strait Islander Australians: analysis from a cross-sectional study. BMC Cardiovascular Disorders, 16 36: 1-8. doi:10.1186/s12872-016-0211-9


Author Zhang, Alice
Hughes, Jaquelyne T.
Brown, Alex
Lawton, Paul D.
Cass, Alan
Hoy, Wendy
O'Dea, Kerin
Maple-Brown, Louise J.
Title Resting heart rate, physiological stress and disadvantage in Aboriginal and Torres Strait Islander Australians: analysis from a cross-sectional study
Journal name BMC Cardiovascular Disorders   Check publisher's open access policy
ISSN 1471-2261
Publication date 2016-02-11
Year available 2016
Sub-type Article (original research)
DOI 10.1186/s12872-016-0211-9
Open Access Status DOI
Volume 16
Issue 36
Start page 1
End page 8
Total pages 8
Place of publication London, United Kingdom
Publisher BioMed Central
Collection year 2017
Language eng
Formatted abstract
Background
Lower socioeconomic status has been linked to long-term stress, which can manifest in individuals as physiological stress. The aim was to explore the relationship between low socioeconomic status and physiological stress in Aboriginal and Torres Strait Islander Australians.

Methods
Using data from the eGFR Study (a cross-sectional study of 634 Indigenous Australians in urban and remote areas of northern and central Australia), we examined associations between resting heart rate and demographic, socioeconomic, and biomedical factors. An elevated resting heart rate has been proposed as a measure of sustained stress activation and was used as a marker of physiological stress. Relationships were assessed between heart rate and the above variables using univariate and multiple regression analyses.

Results
We reported a mean resting heart rate of 74 beats/min in the cohort (mean age 45 years). On multiple regression analysis, higher heart rate was found to be independently associated with Aboriginal ethnicity, being a current smoker, having only primary level schooling, higher HbA1c and higher diastolic blood pressure (model R2 0.25).

Conclusions
Elevated resting heart rate was associated with lower socioeconomic status and poorer health profile in Aboriginal and Torres Strait Islander Australians. Higher resting heart rate may be an indicator of stress and disadvantage in this population at high risk of chronic diseases.
Keyword Heart rate
Socioeconomic status
Stress
Indigenous
Australia
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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