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Exercise and hormonal secretion.

M J Gawel, D M Park, J Alaghband-Zadeh

    Postgraduate Medical Journal
    |June 1, 1979
    PubMed
    Summary
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    Graded exercise impacts hormone secretion, with cortisol, prolactin, growth hormone, and testosterone increasing during activity. Luteinizing hormone levels rise post-exercise, while follicle-stimulating hormone and thyroid-stimulating hormone remain stable.

    Area of Science:

    • Endocrinology
    • Exercise Physiology
    • Sports Medicine

    Background:

    • Hormonal responses to exercise are critical for physiological adaptation.
    • Understanding the dynamic changes in endocrine function during and after physical exertion is essential.

    Purpose of the Study:

    • To investigate the acute effects of graded exercise on the secretion of key hormones.
    • To differentiate hormonal responses during exercise versus post-exercise recovery.

    Main Methods:

    • Participants underwent graded exercise protocols.
    • Blood samples were collected at intervals to measure hormone levels.
    • Hormone concentrations included cortisol, testosterone, prolactin, growth hormone, TSH, LH, and FSH.

    Main Results:

    Related Experiment Videos

    • Cortisol, prolactin, growth hormone, and testosterone showed increased secretion during exercise.
    • Luteinizing hormone (LH) secretion was notably elevated after the rest period post-exercise.
    • Follicle-stimulating hormone (FSH) and thyroid-stimulating hormone (TSH) levels did not significantly change.

    Conclusions:

    • Exercise intensity influences the secretion patterns of various pituitary and adrenal hormones.
    • LH exhibits a delayed secretory response to exercise, becoming apparent during recovery.
    • FSH and TSH appear less sensitive to acute graded exercise stimuli.