Age-dependent changes in the shear wave propagation through human skin.
We studied the potential use of the in vivo frequency response of human volar forearm skin as a means for evaluating skin age. The velocity and damping length of waves on the skin surface were correlated with chronological age. One hundred and fifty subjects from 1 to 95 years of age were studied. For the frequency spectrum from 800 to 2000 Hz, there was a linear correlation between the velocity of propagation and age. At 2000 Hz, the y intercept was 11.4 m/second and the slope was 0.245 m/second/year, r = 0.5500, p less than 1 x 10(-7). There was no correlation of velocity with sex, skin color, obesity, sun exposure, physical activity, or inpatient status.
Davis
B R
BR
Department of Dermatology, Cleveland Metropolitan General Hospital, Ohio 44109.
Bahniuk
E
E
Young
J K
JK
Barnard
C M
CM
Mansour
J M
JM
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D001696:Biomechanical Phenomena; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008722:Methods; D008875:Middle Aged; D012879:Skin Physiological Phenomena