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Related Experiment Videos

Exercise and endorphins--male responses.

P A Farrell

    Medicine and Science in Sports and Exercise
    |February 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Exercise activates the endogenous opiate system, particularly beta-endorphin, though its levels don't strictly correlate with exercise intensity. Further research is needed to understand training's effects and opiate roles in exercise physiology.

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    Area of Science:

    • Exercise Physiology
    • Neuroendocrinology
    • Peptide Research

    Background:

    • The discovery of endogenous opiates in the 1970s spurred research into their physiological roles.
    • Peripheral plasma levels of beta-endorphin increase in humans post-exercise, indicating system activation.
    • Exercise and training serve as valuable models for studying these peptides.

    Purpose of the Study:

    • To explore the physiological roles of endogenous opiates, specifically beta-endorphin, during exercise.
    • To investigate the relationship between exercise intensity and beta-endorphin levels.
    • To highlight the need for research on training effects and opiate involvement in exercise.

    Main Methods:

    • Review of existing human studies using radioimmunoassays and radioreceptor assays.

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  • Observation of peripheral plasma levels of beta-endorphin in response to exercise.
  • Consideration of studies involving opiate antagonists in human and animal models.

    • Main Results:

    • Consistent increases in peripheral plasma beta-endorphin levels after exercise have been reported.
    • One study suggests beta-endorphin levels may not proportionally increase with exercise intensity, requiring further validation.
    • Limited information exists on training effects on acute or chronic exercise responses in males.

    Conclusions:

    • The endogenous opiate system, particularly beta-endorphin, is activated by exercise.
    • Further research is required to confirm the relationship between exercise intensity and beta-endorphin.
    • Opiate antagonists could be crucial for elucidating the roles of these peptides in exercise-related functions.