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Shiftwork: the special challenges for women

R L Morehouse

    AAOHN Journal : Official Journal of the American Association of Occupational Health Nurses
    |October 1, 1995
    PubMed
    Summary

    Shiftwork disrupts natural human sleep-wake cycles, as our bodies are designed for diurnal activity. Individual and shift scheduling factors significantly influence adaptation to non-physiological work hours.

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    Area of Science:

    • Chronobiology
    • Occupational Health
    • Human Physiology

    Background:

    • Human circadian rhythms are optimized for diurnal (daytime) activity and nocturnal (nighttime) rest.
    • Societal demands necessitate shiftwork, creating a conflict with inherent human physiological design.
    • Adaptation to a 24-hour cycle remains a challenge for the human species despite societal pressures.

    Purpose of the Study:

    • To explore the physiological challenges posed by non-physiological shiftwork schedules.
    • To investigate individual differences in coping with shiftwork demands.
    • To examine potential gender-based disparities in shiftwork tolerance.

    Main Methods:

    • Review of physiological and societal factors influencing human adaptation to shiftwork.
    • Analysis of individual chronotypes ('night owls' vs. 'morning larks') in relation to shift scheduling.
    • Consideration of demographic factors, including gender, and their impact on shiftwork tolerance.

    Main Results:

    • Shiftwork is inherently non-physiological due to misalignment with human circadian rhythms.
    • Individual variability exists in the ability to adapt to shiftwork, influenced by factors like chronotype.
    • Women may face greater challenges with shiftwork due to combined domestic and physiological demands.

    Conclusions:

    • Shiftwork poses significant physiological challenges due to its conflict with natural circadian rhythms.
    • Personalized shift scheduling, considering individual chronotypes, can mitigate negative impacts.
    • Further research is needed to address gender-specific challenges and optimize shiftwork arrangements.

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