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Hormonal responses in strenuous jumping effort

C Bosco1, J Tihanyl, L Rivalta

  • 1University of Rome-Tor Vergata, Fondazione Don Gnocchi, Italy.

The Japanese Journal of Physiology
|February 1, 1996
PubMed
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Intense exercise rapidly increases pituitary-adrenocortical, pituitary-gonadal, and pituitary-thyroid hormones. Hormone responses, like testosterone and thyroid hormones, correlate with exercise performance and fatigue in professional soccer players.

Area of Science:

  • Endocrinology
  • Sports Physiology
  • Exercise Science

Background:

  • Short-term supramaximal exercise can induce rapid physiological changes.
  • Understanding acute hormonal responses is crucial for sports performance and recovery.

Purpose of the Study:

  • To investigate the rapid changes in serum hormone levels following a 60-second supramaximal exercise bout.
  • To correlate hormone responses with exercise performance and fatigue indicators.

Main Methods:

  • 16 professional Italian soccer players performed a 60-second Bosco test (consecutive vertical jumps).
  • Serum hormone concentrations (ACTH, cortisol, testosterone, GH, TSH, thyroid hormones, prolactin, IGF-I, SHBG) were measured pre- and post-exercise using RIA.
  • Hormone levels were analyzed in relation to power output and jumping performance.

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Main Results:

  • Significant increases observed in ACTH, cortisol, TSH, fT3, fT4, total and free testosterone, and SHBG immediately after exercise (p < 0.05).
  • No significant changes were detected in GH, IGF-I, or PRL levels.
  • Testosterone response correlated positively with jumping performance and power output.
  • Thyroid hormone response (TSH, fT4) correlated with the decline in power output during the exercise.

Conclusions:

  • Intense, fatiguing exercise triggers rapid increases in hormones from the pituitary-adrenocortical, pituitary-gonadal, and pituitary-thyroid axes.
  • Hormonal responses, particularly testosterone and thyroid hormones, are linked to exercise intensity, performance, and fatigue development in elite athletes.