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Skin potential level: age and epidermal hydration effects

M Garwood, B T Engel, J P Kusterer

    Journal of Gerontology
    |January 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    Older men exhibit lower skin potential levels (SPL) than younger men, particularly under conditions of high epidermal resistance. This reduced sweat gland potential in aging is linked to decreased outdoor activity.

    Area of Science:

    • Physiology
    • Dermatology
    • Gerontology

    Background:

    • Skin potential level (SPL) measurements assess sweat gland activity.
    • Epidermal hydration significantly influences electrodermal responses.
    • Aging may affect sweat gland function and skin electrophysiology.

    Purpose of the Study:

    • To investigate age-related differences in skin potential level (SPL) between young adult and aged men.
    • To examine the impact of varying epidermal hydration levels on SPL.
    • To explore the relationship between SPL, age, hydration, and outdoor activity.

    Main Methods:

    • Basal skin potential level (BSPL) procedures were employed.
    • Three hydration conditions were tested using glycol and distilled water-agar mediums.

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  • A 0.5% KCl electrolyte concentration was used across all conditions.

    • Main Results:

    • Aged men showed significantly lower SPL than young men at the recording's start with glycol medium.
    • No significant age differences in SPL were observed at the start with agar mediums or at BSPL.
    • Hydration affected SPL magnitude at the start but not at BSPL; SPL correlated with outdoor activity in aged men.

    Conclusions:

    • Reduced sweat gland potential in older individuals is evident under high epidermal resistance conditions.
    • This age-related decline in sweat gland potential is associated with lower levels of outdoor activity.
    • Cardiovascular status did not influence the observed relationship between SPL and outdoor activity.