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Physiological correlates of heat intolerance.

W L Kenney

    Sports Medicine (Auckland, N.Z.)
    |July 1, 1985
    PubMed
    Summary

    Identifying individuals with heat intolerance is crucial for safety. Factors like prior heat illness, low fitness, and certain health conditions indicate a reduced ability to adapt to heat exposure.

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    Area of Science:

    • Environmental Physiology
    • Occupational Health

    Background:

    • Individual heat tolerance varies widely.
    • Understanding factors influencing heat adaptation is important for preventing heat-related illnesses, especially in occupational settings.

    Purpose of the Study:

    • To identify physical and physiological characteristics associated with decreased heat tolerance.
    • To inform screening methods for individuals susceptible to heat intolerance in demanding environments.

    Main Methods:

    • Review of existing research correlating individual characteristics with heat intolerance.
    • Analysis of factors such as medical history, fitness levels, and physiological markers.

    Main Results:

    • Key correlates of heat intolerance include a history of heat illness, poor heat acclimation capacity, low aerobic fitness, older age, hypertension, and specific body composition (high adiposity, small stature).
    • Drug use and alcohol consumption were also identified as contributing factors.

    Conclusions:

    • While precise prediction is challenging, several identifiable factors can help screen for heat intolerance.
    • These findings can guide preventative strategies in environments with significant heat stress.

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