TENSILE-STRENGTH, RELAXATION AND MECHANICAL RECOVERY IN RAT SKIN AS INFLUENCED BY MATURATION AND AGE

  • 1 January 1976
    • journal article
    • research article
    • Vol. 7  (2) , 177-188
Abstract
Several mechanical parameters were measured in skin strips of rats at various ages (1, 2, 4, 12 or 24 mo.). Ultimate load and tensile strength increased during the maturation process and reached a maximum at 12 mo. In old animals (24 mo.) a decrease of these parameters was noted. After various preloads relaxation was measured. Relaxation could be described mathematically as a function of logarithm of time. The relaxation coefficient decreased during the maturation as well as during the aging period. After unloading up to 1/5 initial load mechanical recovery was measured. Mechanical recovery was increased depending on age during the whole life span. Various components of viscoelatic behavior probably are influenced differently by the maturation and the aging process.

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