Abstract
Objective
Indigenous populations experience greater proportions of cardiovascular disease, diabetes, and obesity, though lower rates of hypertension. This investigation evaluated blood pressure relationships with vascular measures, anthropometry, cultural identity, and smoking status among Canadian Indigenous and European adults.
Methods
In 2013, in Vancouver, Canada, blood pressure, anthropometry, cultural identity, smoking status, pulse wave velocity (PWV), arterial compliance, baroreceptor sensitivity, and intima-media thickness (IMT) were directly measured among 58 Indigenous (39 ± 18 years, 31 female) and 58 age- and sex-matched European Canadian (42 ± 18 years) adults. Systolic (SBP) and diastolic (DBP) blood pressures were related to vascular measures, and hypertension was related to anthropometry, cultural identity, and smoking status.
Results
Similar vascular measures were recorded between Indigenous and European adults, respectively (PWV 5.3 ± 2.4 vs. 6.2 ± 3.4 m s−1, p = 0.12; IMT 0.59 ± 0.11 vs. 0.61 ± 0.11 mm, p = 0.40; and large arterial compliance 16.1 ± 6.4 vs. 17.5 ± 6.6 mL mmHg−1 × 10, p = 0.26). Similar relationships between vascular measures with SBP and DBP were identified between Indigenous and European adults (spectral baroreceptor sensitivity and SBP, r = 0.48, p = 0.001 vs. r = − 0.11, p = 0.44; ethnic difference p = 0.38; PWV; and DBP, r = 0.23, p = 0.09 vs. r = 0.06, p = 0.65, ethnic difference p = 0.23). Anthropometry only related to blood pressures among Europeans. Cultural identity only related to blood pressures among Indigenous populations. Smoking was not related to hypertension.
Conclusion
Similar vascular measures between Indigenous and European Canadians were identified among populations experiencing similar social determinants of health.
Résumé
Objectif
Les populations autochtones sont proportionnellement plus touchées par les maladies cardiovasculaires, le diabète et l’obésité, mais leurs taux d’hypertension artérielle sont plus faibles. Nous avons évalué les relations entre la pression artérielle et les indicateurs vasculaires, l’anthropométrie, l’identité culturelle et l’usage du tabac chez des Canadiens adultes autochtones et d’origine européenne.
Méthode
En 2013 à Vancouver, au Canada, nous avons obtenu à partir de mesures concrètes la pression artérielle, l’anthropométrie, l’identité culturelle, l’usage ou non du tabac, la vélocité de l’onde pulsatile (VOP), la compliance artérielle, la sensibilité des barorécepteurs et l’épaisseur de l’intima-média (ÉIM) pour 58 Canadiens adultes autochtones (39 ± 18 ans, 31 femmes) et 58 Canadiens adultes d’origine européenne (42 ± 18 ans) assortis par âge et par sexe. La pression systolique (PS) et la pression diastolique (PD) ont été liées aux indicateurs vasculaires, et l’hypertension artérielle a été liée à l’anthropométrie, à l’identité culturelle et à l’usage du tabac.
Résultats
Des indicateurs vasculaires semblables ont été enregistrés entre les adultes autochtones et d’origine européenne, respectivement (VOP 5,3 ± 2,4 c. 6,2 ± 3,4 m s−1, p = 0,12; ÉIM 0,59 ± 0,11 c. 0,61 ± 0,11 mm, p = 0,40; compliance des grosses artères 16,1 ± 6,4 c. 17,5 ± 6,6 mL mmHg−1 × 10, p = 0,26). Des relations semblables entre les indicateurs vasculaires et la PS et la PD ont été observées entre les adultes autochtones et d’origine européenne (sensibilité spectrale des barorécepteurs et PS r = 0,48, p = 0,001 c. r = − 0,11, p = 0,44; différence ethnique p = 0,38; VOP; et PD r = 0,23, p = 0,09 c. r = 0,06, p = 0,65, différence ethnique p = 0,23). L’anthropométrie n’était liée à la pression artérielle que chez les sujets d’origine européenne. L’identité culturelle n’était liée à la pression artérielle que chez les sujets autochtones. Le tabagisme n’était pas lié à l’hypertension artérielle.
Conclusion
Des indicateurs vasculaires semblables ont été observés entre des Canadiens autochtones et d’origine européenne dans des populations où les déterminants sociaux de la santé sont semblables.
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Ethics approval was obtained through the Clinical Research Ethics Board at the University of British Columbia and written informed consent was obtained from each participant prior to data collection.
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Foulds, H.J.A., Bredin, S.S.D. & Warburton, D.E.R. Ethnic differences in vascular function and factors contributing to blood pressure. Can J Public Health 109, 316–326 (2018). https://doi.org/10.17269/s41997-018-0076-z
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DOI: https://doi.org/10.17269/s41997-018-0076-z