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RESEARCH PRODUCT
The effect of an 1100 km run on testicular, adrenal and thyroid hormones
Eberhard NieschlagT. SchürmeyerK. Jungsubject
AdultMaleThyroid Hormonesmedicine.medical_specialtyHydrocortisoneUrologyEndocrinology Diabetes and MetabolismPhysical ExertionRunningchemistry.chemical_compoundDehydroepiandrosterone sulfateAdrenal Cortex HormonesStress PhysiologicalInternal medicinemedicineHumansEndocrine systemTestosteroneTesticular HormonesTestosteroneHydrocortisoneDehydroepiandrosterone Sulfatebusiness.industryThyroidDehydroepiandrosteroneLuteinizing HormoneProlactinTesticular HormonesThyroxineEndocrinologymedicine.anatomical_structureReproductive MedicinechemistryThyroid functionbusinessGlucocorticoidmedicine.drugdescription
Although endocrine effects of physical or psychological stress are well documented, it is not known to what extent adaptation to prolonged exertion occurs. We therefore investigated the impact of an 1100 km run of 20 days' duration on selected pituitary, testicular, adrenal and thyroid hormones. Blood samples were obtained from five male athletes prior to and after the day's run on the 1st, 5th, 9th, 14th and 19th day. Results show that adrenal and thyroid function soon adapt to the daily strain. Testosterone levels, however, were markedly decreased throughout the 20 days while LH levels remained unchanged. Thus it appears that the reproductive endocrine system is more susceptible to long-term stress effects than the more vital functions of the thyroid and adrenal glands.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1984-08-01 | International Journal of Andrology |