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

Jayasinghe, S. U., Torres, S. J., Nowson, C. A., Tilbrook, A. J. and Turner, A. I. 2014, Physiological responses to psychological stress: importance of adiposity in men aged 50-70 years, Endocrine connections, vol. 3, pp. 110-119, doi: 10.1530/EC-14-0042.

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Title Physiological responses to psychological stress: importance of adiposity in men aged 50-70 years
Author(s) Jayasinghe, S. U.
Torres, S. J.ORCID iD for Torres, S. J. orcid.org/0000-0002-2599-1934
Nowson, C. A.ORCID iD for Nowson, C. A. orcid.org/0000-0001-6586-7965
Tilbrook, A. J.
Turner, A. I.ORCID iD for Turner, A. I. orcid.org/0000-0002-0682-2860
Journal name Endocrine connections
Volume number 3
Start page 110
End page 119
Total pages 10
Publisher BioScientifica
Place of publication Bristol, England
Publication date 2014
ISSN 2049-3614
Keyword(s) stress
sympatho-adrenal medullary system
hypothalamo–pituitary– adrenal axis
obesity
adiposity
men's health
cortisol
Summary 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 (BMIZ20–25 kg/m2; nZ19) and overweight/obese (BMIZ27–35 kg/m2; nZ17) 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; PZ0.187, PZ0.288, PZ0.550, 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 (PO0.05 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.
Language eng
DOI 10.1530/EC-14-0042
Field of Research 110306 Endocrinology
Socio Economic Objective 920106 Endocrine Organs and Diseases (excl. Diabetes)
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2014, BioScientifica
Persistent URL http://hdl.handle.net/10536/DRO/DU:30065450

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Created: Thu, 21 Aug 2014, 14:04:35 EST by Jane Moschetti

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