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Physiological responses to psychological stress: importance of adiposity in men aged 50–70 years

Citation

Jayasinghe, SU and Torres, SJ and Nowson, CA and Tilbrook, AJ and Turner, AI, Physiological responses to psychological stress: importance of adiposity in men aged 50-70 years, Endocrine connections, 3, (3) pp. 110-119. ISSN 2049-3614 (2014) [Refereed Article]


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Copyright Statement

Copyright 2014 The Authors. Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/deed.en_GB

DOI: doi:10.1530/EC-14-0042

Abstract

We tested the hypothesis that overweight/obese men aged 50-70 years will have a greater salivary cortisol, salivary alpha amylase and heart rate (HR) responses to psychological stress compared with age matched lean men. Lean (BMI=20-25 kg/m(2); n=19) and overweight/obese (BMI=27-35 kg/m(2); n=17) men (50-70 years) were subjected to a well-characterised psychological stress (Trier Social Stress Test, TSST) at 1500 h. Concentrations of cortisol and alpha amylase were measured in saliva samples collected every 7-15 min from 1400 to 1700 h. HR was recorded using electrocardiogram. Body weight, BMI, percentage body fat, resting systolic and diastolic blood pressure and mean arterial pressure were significantly higher (P<0.05) in overweight/obese men compared with lean men. Both groups responded to the TSST with a substantial elevation in salivary cortisol (372%), salivary alpha amylase (123%) and HR (22%). These responses did not differ significantly between the groups (time×treatment interaction for salivary cortisol, salivary alpha amylase and HR; P=0.187, P=0.288, P=0.550, respectively). There were no significant differences between the groups for pretreatment values, peak height, difference between pretreatment values and peak height (reactivity) or area under the curve for salivary cortisol, salivary alpha amylase or HR (P>0.05 for all). The results showed that, for men with a moderate level of overweight/obesity who were otherwise healthy, the response of salivary cortisol, salivary alpha amylase and HR to acute psychological stress was not impaired.

Item Details

Item Type:Refereed Article
Keywords:adiposity, cortisol, hypothalamo–pituitary–adrenal axis, men's health, obesity, stress, sympatho-adrenal medullary system
Research Division:Medical and Health Sciences
Research Group:Clinical Sciences
Research Field:Endocrinology
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Clinical Health (Organs, Diseases and Abnormal Conditions) not elsewhere classified
UTAS Author:Jayasinghe, SU (Mr Sisitha Jayasinghe)
ID Code:135783
Year Published:2014
Web of Science® Times Cited:13
Deposited By:Health Sciences
Deposited On:2019-11-13
Last Modified:2019-12-13
Downloads:4 View Download Statistics

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