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Association between vitamin D status and testosterone and cortisol in ice hockey players

The identification of the vitamin D receptor in tissues related to testosterone and cortisol production, in conjunction with the observed correlations between vitamin D levels and these hormones in the general population, suggest vitamin D may influence testosterone and cortisol concentrations in at...

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Autores principales: Fitzgerald, John S., Orysiak, Joanna, Wilson, Patrick B., Mazur-Różycka, Joanna, Obminski, Zbigniew
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Institute of Sport in Warsaw 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6224848/
https://www.ncbi.nlm.nih.gov/pubmed/30449937
http://dx.doi.org/10.5114/biolsport.2018.74631
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author Fitzgerald, John S.
Orysiak, Joanna
Wilson, Patrick B.
Mazur-Różycka, Joanna
Obminski, Zbigniew
author_facet Fitzgerald, John S.
Orysiak, Joanna
Wilson, Patrick B.
Mazur-Różycka, Joanna
Obminski, Zbigniew
author_sort Fitzgerald, John S.
collection PubMed
description The identification of the vitamin D receptor in tissues related to testosterone and cortisol production, in conjunction with the observed correlations between vitamin D levels and these hormones in the general population, suggest vitamin D may influence testosterone and cortisol concentrations in athletes. A cross-sectional study design was used to evaluate the association between 25(OH)D and testosterone and cortisol concentrations in young male ice hockey players (n = 50). All athletes were recruited during October from the Sosnowiec area, Poland (50° N). Commercially available ELISA kits were used to determine total serum 25(OH)D, testosterone and cortisol concentrations. Serum 25(OH)D concentration was analyzed as both a continuous and dichotomous variable, binned at the criteria for deficiency (< 20 ng·ml(-1)), to investigate a threshold effect. Neither continuous (r = 0.18, p = 0.20) nor dichotomous (r = 0.16, p = 0.27) 25(OH)D concentration was significantly correlated with testosterone concentration. A small, inverse correlation (r = -0.30, p = 0.04) was detected between 25(OH)D and cortisol concentrations when analyzed as a dichotomous variable only. Serum 25(OH)D concentration was neither associated with testosterone (p = 0.09) nor cortisol concentrations (p = 0.11) after adjusting for age, fat free mass and fat mass in sequential linear regression. The inability of vitamin D status to independently predict testosterone and cortisol concentrations suggests that any performance-enhancing effects of vitamin D in athletes are unlikely to be mediated primarily through these hormones, at least amongst young male ice-hockey players.
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spelling pubmed-62248482018-11-16 Association between vitamin D status and testosterone and cortisol in ice hockey players Fitzgerald, John S. Orysiak, Joanna Wilson, Patrick B. Mazur-Różycka, Joanna Obminski, Zbigniew Biol Sport Original Paper The identification of the vitamin D receptor in tissues related to testosterone and cortisol production, in conjunction with the observed correlations between vitamin D levels and these hormones in the general population, suggest vitamin D may influence testosterone and cortisol concentrations in athletes. A cross-sectional study design was used to evaluate the association between 25(OH)D and testosterone and cortisol concentrations in young male ice hockey players (n = 50). All athletes were recruited during October from the Sosnowiec area, Poland (50° N). Commercially available ELISA kits were used to determine total serum 25(OH)D, testosterone and cortisol concentrations. Serum 25(OH)D concentration was analyzed as both a continuous and dichotomous variable, binned at the criteria for deficiency (< 20 ng·ml(-1)), to investigate a threshold effect. Neither continuous (r = 0.18, p = 0.20) nor dichotomous (r = 0.16, p = 0.27) 25(OH)D concentration was significantly correlated with testosterone concentration. A small, inverse correlation (r = -0.30, p = 0.04) was detected between 25(OH)D and cortisol concentrations when analyzed as a dichotomous variable only. Serum 25(OH)D concentration was neither associated with testosterone (p = 0.09) nor cortisol concentrations (p = 0.11) after adjusting for age, fat free mass and fat mass in sequential linear regression. The inability of vitamin D status to independently predict testosterone and cortisol concentrations suggests that any performance-enhancing effects of vitamin D in athletes are unlikely to be mediated primarily through these hormones, at least amongst young male ice-hockey players. Institute of Sport in Warsaw 2018-03-31 2018-09 /pmc/articles/PMC6224848/ /pubmed/30449937 http://dx.doi.org/10.5114/biolsport.2018.74631 Text en Copyright © Biology of Sport 2018 http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License, permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Paper
Fitzgerald, John S.
Orysiak, Joanna
Wilson, Patrick B.
Mazur-Różycka, Joanna
Obminski, Zbigniew
Association between vitamin D status and testosterone and cortisol in ice hockey players
title Association between vitamin D status and testosterone and cortisol in ice hockey players
title_full Association between vitamin D status and testosterone and cortisol in ice hockey players
title_fullStr Association between vitamin D status and testosterone and cortisol in ice hockey players
title_full_unstemmed Association between vitamin D status and testosterone and cortisol in ice hockey players
title_short Association between vitamin D status and testosterone and cortisol in ice hockey players
title_sort association between vitamin d status and testosterone and cortisol in ice hockey players
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6224848/
https://www.ncbi.nlm.nih.gov/pubmed/30449937
http://dx.doi.org/10.5114/biolsport.2018.74631
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