Torres, SJ and Turner, AI and Jayasinghe, SU and Reynolds, J and Nowson, CA, The effect of overweight/obesity on cardiovascular responses to acute psychological stress in men aged 50-70 years, Obesity Facts, 7, (6) pp. 339-350. ISSN 1662-4025 (2014) [Refereed Article]
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© 2014 S. Karger GmbH, Freiburg. This is an Open Access article licensed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC) applicable to the online version of the article only. Distribution permitted for non-commercial purposes only.
Background: To determine the effect of adiposity in males aged 50-70 years on cardiovascular responses to acute psychological stress.
Methods: Lean (BMI 20-25 kg/m(2)) (n = 21) and overweight/obese (BMI 27-35 kg/m(2)) (n = 21) men aged 50-70 years were subjected to psychological stress. Systolic blood pressure, diastolic blood pressure, heart rate, total peripheral resistance, and cardiac output were measured by a Finometer during resting (60 min), stress (30 min), and recovery (90 min).
Results: The lean group had a significantly higher SBP stress reactivity when compared to the overweight/obese group (51.5 ± 3.7% vs. 41.0 ± 2.9% (mean ± SEM) ; p < 0.05). A significant effect of time was observed for systolic blood pressure, diastolic blood pressure, heart rate, total peripheral resistance, and cardiac output (p < 0.0001 for all). There were significant time × body type interactions for systolic blood pressure, diastolic blood pressure, heart rate, total peripheral resistance, and cardiac output (p < 0.05 for all). Total peripheral resistance during recovery was higher in the lean compared to the overweight/obese group (p < 0.05). In the lean group, systolic and diastolic blood pressure variability remained elevated after stress (p < 0.05) but returned to resting levels in the overweight/obese group (p > 0.05).
Conclusion: Moderate adiposity in men was associated with reduced systolic blood pressure % reactivity, total peripheral resistance, and blood pressure variability after psychological stress. Overweight/obese men appear to be at no greater risk of unfavorable cardiovascular responses to stress.
|Item Type:||Refereed Article|
|Keywords:||Stress systems, Cortisol|
|Research Division:||Biological Sciences|
|Research Group:||Biochemistry and cell biology|
|Research Field:||Systems biology|
|Objective Group:||Specific population health (excl. Indigenous health)|
|Objective Field:||Neonatal and child health|
|Web of Science® Times Cited:||9|
|Deposited By:||Health Sciences|
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