In vivo friction properties of human skin

In vivo frictional properties of human skin and five materials, namely alum inium, nylon, silicone, cotton sock, Pelite, were investigated. Normal and untreated skin over six anatomic regions of ten normal subjects were measur ed under a controlled environment. The average coefficient of friction for all measurements is 0.46+/-0.15 (p<0.05). Among all measured sites, the pal m of the hand has the highest coefficient of friction (0.62+/-0.22). For al l the materials tested, silicone has the highest coefficient of friction (0 .61+/-0.21), while nylon has the lowest friction (0.37+/-0.09).