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Adrenalin and muscle strength

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  • Adrenalin and muscle strength

    Dear all,

    When I studied physiology at uni (back in the mid 70s!) we were told
    that adrenalin could increase the strength and endurance of muscles by
    increasing the blood flow to the larger voluntary muscles.

    In many media tales of earthquakes we hear about people who perform
    almost superhuman feats when lifting masonry off buried loved ones. One
    sometimes hears similar anecdotes concerning the children or parents
    from crushed or overturned cars. Does an adrenalin rush really increase
    muscle strength dramatically? Has anyone published any research on this?

    Woodchoppers perform astonishing rates of work when competing for a
    prize. Can excitement and competition be helpful at work if it gets the
    adrenalin pumping? Is sort of thing sustainable in real-life work
    situations? And, if so, is that a good thing?


    David McFarlane
    WorkCover Authority of New South Wales

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