Resting steroid hormone concentrations in lifetime exercisers and lifetime sedentary males

Hayes, Lawrence D., Sculthorpe, Nicholas, Herbert, Peter, Baker, Julien S., Hullin, David A., Kilduff, Liam P. and Grace, Fergal M. (2014) Resting steroid hormone concentrations in lifetime exercisers and lifetime sedentary males. Aging Male, 18 (1). pp. 22-26. Full text not available from this repository.

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Official URL: https://doi.org/10.3109/13685538.2014.977246

Abstract

Introduction: Advancing age in men is associated with a progressive decline in serum testosterone (T) and interactions between exercise, aging and androgen status are poorly understood. The primary aim of this study was to establish the influence of lifelong training history on serum T, cortisol (C) and sex hormone binding globulin (SHBG) in aging men. A secondary aim was to determine the agreement between serum and salivary measurement of steroid hormones in ageing men.

Methods: Serum and salivary steroid hormones (serum C, T and SHBG, and salivary measures of C and T) were determined and compared between two distinct groups; lifelong exercising males (LE [n = 20], 60.4 ± 4.7 year) and age matched lifelong sedentary individuals (SED [n = 28], 62.5 ± 5.3 years).

Results: T-test revealed a lack of significant differences for serum C or SHBG between LE and SED, while Mann-Whitney U revealed a lack of differences in total T (TT), bioavailable T (bio-T) or free testosterone (free-T). Further, salivary T (sal-T) did not correlate with serum markers of T in LE, SED, or when pooled (r = 0.040; p > 0.05).

Conclusions: Findings from this investigation suggested that resting levels of serum T and calculated free-T was unable to distinguish between diverse lifelong training histories in aging men. Further, sal-T was not an appropriate indicator of serum T and calculated free-T values in older males and considerable caution should be exercised when interpreting sal-T measurements in aging males.

Item Type: Article
Journal or Publication Title: Aging Male
Publisher: Taylor & Francis for International Society for the Study of the Aging Male / Informa Healthcare
ISSN: 1473-0790
Departments: Faculty of Health and Science > Medical and Sports Sciences > Sports and Physical Activity > Sport
Depositing User: Lawrence D. Hayes
Date Deposited: 16 Mar 2016 16:20
Last Modified: 01 Aug 2017 15:29
URI: http://insight.cumbria.ac.uk/id/eprint/1839

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