Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.

<h4>Purpose</h4>The aim of this study was to examine the effects of a six-week off-season detraining period on exercise performance, body composition, and on circulating sex steroid levels in soccer players.<h4>Methods</h4>Fifty-five professional male soccer players, members...

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Autores principales:	Nikolaos E Koundourakis, Nikolaos E Androulakis, Niki Malliaraki, Christos Tsatsanis, Maria Venihaki, Andrew N Margioris
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cc161ba788684a26bc82e610e24e7311
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spelling	oai:doaj.org-article:cc161ba788684a26bc82e610e24e73112021-11-18T08:32:07ZDiscrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.1932-620310.1371/journal.pone.0087803https://doaj.org/article/cc161ba788684a26bc82e610e24e73112014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24586293/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Purpose</h4>The aim of this study was to examine the effects of a six-week off-season detraining period on exercise performance, body composition, and on circulating sex steroid levels in soccer players.<h4>Methods</h4>Fifty-five professional male soccer players, members of two Greek Superleague Teams (Team A, n = 23; Team B, n = 22), participated in the study. The first two weeks of the detraining period the players abstained from any physical activity. The following four weeks, players performed low-intensity (50%-60% of VO2max) aerobic running of 20 to 30 minutes duration three times per week. Exercise performance testing, anthropometry, and blood sampling were performed before and after the six-week experimental period.<h4>Results</h4>Our data showed that in both teams A and B the six-week detraining period resulted in significant reductions in maximal oxygen consumption (60,31±2,52 vs 57,67±2,54; p<0.001, and 60,47±4,13 vs 58,30±3,88; p<0.001 respectively), squat-jump (39,70±3,32 vs 37,30±3,08; p<0.001, and 41,05±3,34 vs 38,18±3,03; p<0.001 respectively), and countermovement-jump (41,04±3,99 vs 39,13±3,26; p<0.001 and 42,82±3,60 vs 40,09±2,79; p<0.001 respectively), and significant increases in 10-meters sprint (1,74±0,063 vs 1,79±0,064; p<0.001, and 1,73±0,065 vs 1,78±0,072; p<0.001 respectively), 20-meters sprint (3,02±0,05 vs 3,06±0,06; p<0.001, and 3,01±0,066 vs 3,06±0,063; p<0.001 respectively), body fat percentage (Team A; p<0.001, Team B; p<0.001), and body weight (Team A; p<0.001, Team B; p<0.001). Neither team displayed any significant changes in the resting concentrations of total-testosterone, free-testosterone, dehydroepiandrosterone-sulfate, Δ4-androstenedione, estradiol, luteinizing hormone, follicle-stimulating hormone, and prolactin. Furthermore, sex steroids levels did not correlate with exercise performance parameters.<h4>Conclusion</h4>Our results suggest that the six-week detraining period resulted in a rapid loss of exercise performance adaptations and optimal body composition status, but did not affect sex steroid resting levels. The insignificant changes in sex steroid concentration indicate that these hormones were a non-contributing parameter for the observed negative effects of detraining on exercise performance and body composition.Nikolaos E KoundourakisNikolaos E AndroulakisNiki MalliarakiChristos TsatsanisMaria VenihakiAndrew N MargiorisPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 2, p e87803 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nikolaos E Koundourakis Nikolaos E Androulakis Niki Malliaraki Christos Tsatsanis Maria Venihaki Andrew N Margioris Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.
description	<h4>Purpose</h4>The aim of this study was to examine the effects of a six-week off-season detraining period on exercise performance, body composition, and on circulating sex steroid levels in soccer players.<h4>Methods</h4>Fifty-five professional male soccer players, members of two Greek Superleague Teams (Team A, n = 23; Team B, n = 22), participated in the study. The first two weeks of the detraining period the players abstained from any physical activity. The following four weeks, players performed low-intensity (50%-60% of VO2max) aerobic running of 20 to 30 minutes duration three times per week. Exercise performance testing, anthropometry, and blood sampling were performed before and after the six-week experimental period.<h4>Results</h4>Our data showed that in both teams A and B the six-week detraining period resulted in significant reductions in maximal oxygen consumption (60,31±2,52 vs 57,67±2,54; p<0.001, and 60,47±4,13 vs 58,30±3,88; p<0.001 respectively), squat-jump (39,70±3,32 vs 37,30±3,08; p<0.001, and 41,05±3,34 vs 38,18±3,03; p<0.001 respectively), and countermovement-jump (41,04±3,99 vs 39,13±3,26; p<0.001 and 42,82±3,60 vs 40,09±2,79; p<0.001 respectively), and significant increases in 10-meters sprint (1,74±0,063 vs 1,79±0,064; p<0.001, and 1,73±0,065 vs 1,78±0,072; p<0.001 respectively), 20-meters sprint (3,02±0,05 vs 3,06±0,06; p<0.001, and 3,01±0,066 vs 3,06±0,063; p<0.001 respectively), body fat percentage (Team A; p<0.001, Team B; p<0.001), and body weight (Team A; p<0.001, Team B; p<0.001). Neither team displayed any significant changes in the resting concentrations of total-testosterone, free-testosterone, dehydroepiandrosterone-sulfate, Δ4-androstenedione, estradiol, luteinizing hormone, follicle-stimulating hormone, and prolactin. Furthermore, sex steroids levels did not correlate with exercise performance parameters.<h4>Conclusion</h4>Our results suggest that the six-week detraining period resulted in a rapid loss of exercise performance adaptations and optimal body composition status, but did not affect sex steroid resting levels. The insignificant changes in sex steroid concentration indicate that these hormones were a non-contributing parameter for the observed negative effects of detraining on exercise performance and body composition.
format	article
author	Nikolaos E Koundourakis Nikolaos E Androulakis Niki Malliaraki Christos Tsatsanis Maria Venihaki Andrew N Margioris
author_facet	Nikolaos E Koundourakis Nikolaos E Androulakis Niki Malliaraki Christos Tsatsanis Maria Venihaki Andrew N Margioris
author_sort	Nikolaos E Koundourakis
title	Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.
title_short	Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.
title_full	Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.
title_fullStr	Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.
title_full_unstemmed	Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.
title_sort	discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/cc161ba788684a26bc82e610e24e7311
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Discrepancy between exercise performance, body composition, and sex steroid response after a six-week detraining period in professional soccer players.

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