Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?

Crewther, Blair T.; Thomas, Andrew; Stewart-Williams, Steve; Kilduff, Liam&nbsp;P.; Cook, Christian J.; Kilduff, Liam

doi:10.1080/17461391.2016.1220628

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Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?

Blair T. Crewther, Andrew Thomas

, Steve Stewart-Williams, Liam P. Kilduff, Christian J. Cook, Liam Kilduff

European Journal of Sport Science, Volume: 17, Issue: 2, Pages: 188 - 194

Swansea University Authors: Andrew Thomas , Liam Kilduff

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DOI (Published version): 10.1080/17461391.2016.1220628

Abstract

This study examined the moderating effect of cortisol (C) on the relationship between testosterone (T) and hand-grip strength (HGS) in healthy young men. Sixty-five males were monitored for salivary T, C and HGS before and 15 min after a short bout (5 × 6-s trials) of sprint cycling exercise. Sprint...

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Published in:	European Journal of Sport Science
ISSN:	1746-1391 1536-7290
Published:	2017
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa29299
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first_indexed	2016-07-28T18:55:50Z
last_indexed	2018-02-16T14:26:10Z
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spelling	2018-02-16T11:03:02.4548281 v2 29299 2016-07-28 Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men? a43308ae6d7f5b8d5ab0daff5b832a96 0000-0001-5251-7923 Andrew Thomas Andrew Thomas true false 972ed9a1dda7a0de20581a0f8350be98 0000-0001-9449-2293 Liam Kilduff Liam Kilduff true false 2016-07-28 HPS This study examined the moderating effect of cortisol (C) on the relationship between testosterone (T) and hand-grip strength (HGS) in healthy young men. Sixty-five males were monitored for salivary T, C and HGS before and 15 min after a short bout (5 × 6-s trials) of sprint cycling exercise. Sprint exercise promoted (p < .05) positive changes in T (6.1 ± 24.9%) and HGS (3.4 ± 7.5%), but a negative C response (−14.4 ± 33.1%). The T and C measures did not independently predict HGS, but a significant T × C interaction was found in relation to these outcomes. Further testing revealed that pre-test T and HGS were negatively associated (p < .05), but only in men with high C levels. The exercise changes in T and HGS were also negatively related in men with low C levels (p < .05), but no relationship was seen in men with high C levels. In summary, complex relationships between T and HGS emerged when considering C as a moderating variable. The pre-test combination of high C and low T levels favoured absolute HGS, whereas low pre-test C levels and a smaller T change were linked to larger HGS changes. These associations suggest that, in the current format, T is not necessarily anabolic to muscle strength in healthy young men. Such complexities could also explain some of the inconsistent T relationships with physical performance in lesser trained male populations. Journal Article European Journal of Sport Science 17 2 188 194 1746-1391 1536-7290 Testing, stress, endocrinology, performance 31 12 2017 2017-12-31 10.1080/17461391.2016.1220628 COLLEGE NANME Psychology COLLEGE CODE HPS Swansea University 2018-02-16T11:03:02.4548281 2016-07-28T16:09:33.1186154 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Blair T. Crewther 1 Andrew Thomas 0000-0001-5251-7923 2 Steve Stewart-Williams 3 Liam P. Kilduff 4 Christian J. Cook 5 Liam Kilduff 0000-0001-9449-2293 6 0029299-28072016160959.pdf crewther2016.pdf 2016-07-28T16:09:59.4070000 Output 1208922 application/pdf Accepted Manuscript true 2017-08-25T00:00:00.0000000 true
title	Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?
spellingShingle	Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men? Andrew Thomas Liam Kilduff
title_short	Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?
title_full	Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?
title_fullStr	Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?
title_full_unstemmed	Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?
title_sort	Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?
author_id_str_mv	a43308ae6d7f5b8d5ab0daff5b832a96 972ed9a1dda7a0de20581a0f8350be98
author_id_fullname_str_mv	a43308ae6d7f5b8d5ab0daff5b832a96_*_Andrew Thomas 972ed9a1dda7a0de20581a0f8350be98_*_Liam Kilduff
author	Andrew Thomas Liam Kilduff
author2	Blair T. Crewther Andrew Thomas Steve Stewart-Williams Liam P. Kilduff Christian J. Cook Liam Kilduff
format	Journal article
container_title	European Journal of Sport Science
container_volume	17
container_issue	2
container_start_page	188
publishDate	2017
institution	Swansea University
issn	1746-1391 1536-7290
doi_str_mv	10.1080/17461391.2016.1220628
college_str	Faculty of Science and Engineering
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description	This study examined the moderating effect of cortisol (C) on the relationship between testosterone (T) and hand-grip strength (HGS) in healthy young men. Sixty-five males were monitored for salivary T, C and HGS before and 15 min after a short bout (5 × 6-s trials) of sprint cycling exercise. Sprint exercise promoted (p < .05) positive changes in T (6.1 ± 24.9%) and HGS (3.4 ± 7.5%), but a negative C response (−14.4 ± 33.1%). The T and C measures did not independently predict HGS, but a significant T × C interaction was found in relation to these outcomes. Further testing revealed that pre-test T and HGS were negatively associated (p < .05), but only in men with high C levels. The exercise changes in T and HGS were also negatively related in men with low C levels (p < .05), but no relationship was seen in men with high C levels. In summary, complex relationships between T and HGS emerged when considering C as a moderating variable. The pre-test combination of high C and low T levels favoured absolute HGS, whereas low pre-test C levels and a smaller T change were linked to larger HGS changes. These associations suggest that, in the current format, T is not necessarily anabolic to muscle strength in healthy young men. Such complexities could also explain some of the inconsistent T relationships with physical performance in lesser trained male populations.
published_date	2017-12-31T03:35:41Z
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Is salivary cortisol moderating the relationship between salivary testosterone and hand-grip strength in healthy men?

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