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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...
Published in: | European Journal of Sport Science |
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ISSN: | 1746-1391 1536-7290 |
Published: |
2017
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Online Access: |
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URI: | https://cronfa.swan.ac.uk/Record/cronfa29299 |
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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 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. |
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Keywords: |
Testing, stress, endocrinology, performance |
College: |
Faculty of Science and Engineering |
Issue: |
2 |
Start Page: |
188 |
End Page: |
194 |