European Journal of Applied Physiology

, Volume 99, Issue 1, pp 65–71

Variations in urine excretion of steroid hormones after an acute session and after a 4-week programme of strength training

  • Rafael  Timón Andrada
  • M.  Maynar Mariño
  • D.  Muñoz Marín
  • G. J. Olcina Camacho
  • M. J. Caballero
  • J. I. Maynar Mariño
Original Article

DOI: 10.1007/s00421-006-0319-1

Cite this article as:
Timón Andrada, R., Maynar Mariño, M., Muñoz Marín, D. et al. Eur J Appl Physiol (2007) 99: 65. doi:10.1007/s00421-006-0319-1

Abstract

Performing strength exercise, whether acutely or in a training programme, leads to alterations at the hypothalamic-pituitary-testicular and hypothalamic-pituitary-adrenal axes. One way to evaluate these changes is by analysis of the excretion of steroid hormones in the urine. The present study determined the variations in the urine profile of glucuroconjugated steroids after a single session of strength exercise and after a 4-week programme of strength training. The subjects were a group (n = 20) of non-sportsman male university students who worked out 3 days a week [Monday (M), Wednesday (W) and Friday (F)], performing the exercises at 70–75% of one repetition maximum strength (1-RM). Four urine samples were collected per subject: (A) before and (B) after a standard session prior to initiating the training programme, and (C) before and (D) after the same standard session at the end of the study, and they were assayed by gas chromatography coupled to mass spectrometry. The concentrations of the different hormones were determined relatively to the urine creatinine level (ng steroid/mg creatinine) to correct for diuresis. After the exercise sessions, both before and after the training programme, there was a fall in the urine excretion of androgens and estrogens, but no statistically significant changes in the excretion of tetrahydrocortisol (THF) and tetrahydrocortisone (THE). The anabolic/catabolic hormones ratio also decreased after the acute session, although only androstenodione + dehydroepiandrosterone (DHEA)/THE + THF ratio had a significant decrease (P < 0.05). After the training programme, there was a significant (P < 0.01) improvement in the strength of the muscle groups studied, and an increased urinary excretion of all the androgens with respect to the initial state of repose, with the difference being significant in the case of epitestosterone (Epit) (P < 0.05). The androsterone (A) + etiocholanolone (E)/THE + THF ratio increased significantly (P < 0.05) concerning the initial state. We therefore conclude that subjects suffer variations of the urine profile with regard to the steroid hormones before and after the acute strength sessions and after the training period. The alteration after the training programme seems to be due to the subjects’ hypothalamic-hypophysis-testicular and hypothalamic-pituitary-adrenal axes adaptations, which enable them to increase physical strength.

Keywords

Androgens Corticosteroids Urine Strength training Gas chromatography/mass spectrometry 

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Rafael  Timón Andrada
    • 1
    • 5
  • M.  Maynar Mariño
    • 2
  • D.  Muñoz Marín
    • 1
  • G. J. Olcina Camacho
    • 1
  • M. J. Caballero
    • 3
  • J. I. Maynar Mariño
    • 4
  1. 1.Department of Didactics of Musical, Plastic and Corporal Expression, Sport Sciences SchoolUniversity of ExtremaduraCáceresSpain
  2. 2.Department of Physiology, Sports Sciences SchoolUniversity of ExtremaduraCáceresSpain
  3. 3.Department of Pharmacology, School of MedicineUniversity of ExtremaduraBadajozSpain
  4. 4.Department of Analytical Chemistry and Electrochemistry, School of SciencesUniversidad de ExtremaduraBadajozSpain
  5. 5.Facultad de Ciencias del DeporteUniversidad de ExtremaduraCáceresSpain

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