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Rannelli LA, MacRae JM, Mann MC, Ramesh S, Hemmelgarn BR, Rabi D, Sola DY, Ahmed SB. Sex differences in associations between insulin resistance, heart rate variability, and arterial stiffness in healthy women and men: a physiology study. Can J Physiol Pharmacol 2016; 95:349-355. [PMID: 28099042 DOI: 10.1139/cjpp-2016-0122] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diabetes confers greater cardiovascular risk to women than to men. Whether insulin-resistance-mediated risk extends to the healthy population is unknown. Measures of insulin resistance (fasting insulin, homeostatic model assessment, hemoglobin A1c, quantitative insulin sensitivity check index, glucose) were determined in 48 (56% female) healthy subjects. Heart rate variability (HRV) was calculated by spectral power analysis and arterial stiffness was determined using noninvasive applanation tonometry. Both were measured at baseline and in response to angiotensin II infusion. In women, there was a non-statistically significant trend towards increasing insulin resistance being associated with an overall unfavourable HRV response and increased arterial stiffness to the stressor, while men demonstrated the opposite response. Significant differences in the associations between insulin resistance and cardiovascular physiological profile exist between healthy women and men. Further studies investigating the sex differences in the pathophysiology of insulin resistance in cardiovascular disease are warranted.
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Affiliation(s)
- Luke Anthony Rannelli
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada
| | - Jennifer M MacRae
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Michelle C Mann
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Sharanya Ramesh
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Brenda R Hemmelgarn
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada.,d Institute for Public Health, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada
| | - Doreen Rabi
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada.,d Institute for Public Health, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada
| | - Darlene Y Sola
- b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Sofia B Ahmed
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
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