The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc

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dc.contributor.authorKılıç, M
dc.contributor.authorBaltacı, A. K.
dc.contributor.authorGünay, M
dc.contributor.authorGökbel, Hakkı
dc.contributor.authorOkudan, Nilsel
dc.contributor.authorCicioğlu, I
dc.date.accessioned2020-03-26T17:04:31Z
dc.date.available2020-03-26T17:04:31Z
dc.date.issued2006
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractOBJECTIVES: The present study aims to investigate how exhaustion exercise affects thyroid hormones and testosterone levels in elite athletes who are supplemented with oral zinc sulfate for 4 weeks. METHODS: The study included 10 male wrestlers, who had been licensed wrestlers for at least 6 years. Mean age of the wrestlers who volunteered in the study was 18.70 +/- 2.4 years. All subjects were supplemented with oral zinc sulfate (3 mg/kg/day) for 4 weeks in addition to their normal diet. Thyroid hormone and testosterone levels of all subjects were determined as resting and exhaustion before and after zinc supplementation. RESULTS: Resting TT3, TT4, FT3, FT4 and TSH levels of subjects were higher than the parameters measured after exhaustion exercise before zinc supplementation (p < 0.05). Both resting and exhaustion TT3, TT4 and FT3 values after 4-week zinc supplementation were found significantly higher than both of the parameters (resting and exhaustion) measured before zinc supplementation (p < 0.05). Resting total testosterone and free testosterone levels before zinc supplementation were significantly higher than exhaustion levels before zinc supplementation (p < 0.05). Both resting and exhaustion total and free testosterone levels following 4-week zinc supplementation were found significantly higher than the levels (both resting and exhaustion) measured before zinc supplementation (p < 0.05). CONCLUSION: Findings of our study demonstrate that exhaustion exercise led to a significant inhibition of both thyroid hormones and testosterone concentrations, but that 4-week zinc supplementation prevented this inhibition in wrestlers. In conclusion, physiological doses of zinc administration may benefit performance.en_US
dc.identifier.endpage252en_US
dc.identifier.issn0172-780Xen_US
dc.identifier.issue01.02.2020en_US
dc.identifier.pmid16648789en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage247en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/20720
dc.identifier.volume27en_US
dc.identifier.wosWOS:000238667700042en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherMAGHIRA & MAAS PUBLICATIONSen_US
dc.relation.ispartofNEUROENDOCRINOLOGY LETTERSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectwrestlersen_US
dc.subjectexhaustionen_US
dc.subjectexerciseen_US
dc.subjectzinc supplementationen_US
dc.titleThe effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zincen_US
dc.typeArticleen_US

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