---
title: The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc. - Limitless Mindset
description: 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.
author: Jonathan Roseland
url: https://www.limitlessmindset.com/scientific-studies/822-testosterone-levels-of-elite-athletes-zinc
---

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

[![The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc.](https://www.limitlessmindset.com/data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)](https://www.limitlessmindset.com/media/reviews/photos/original/de/52/a1/the-effect-of-exhaustion-exercise-on-thyroid-hormones-and-testosterone-levels-of-elite-athletes-receiving-oral-zinc-94-1390247530.webp "The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc.")

*Abstract*
**OBJECTIVES**:
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.

**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.

### Scientific Studies & Papers

Author of Study or Paper

Kilic M, Baltaci AK, Gunay M, Gökbel H, Okudan N, Cicioglu I.

Source

Selçuk University

Date Published

2006

Scientific Link

[http://www.ncbi.nlm.nih.gov/pubmed/16648789](http://www.ncbi.nlm.nih.gov/pubmed/16648789)

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