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首页> 外文期刊>Skin research and technology: official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) >Skin-textile friction and skin elasticity in young and aged persons.
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Skin-textile friction and skin elasticity in young and aged persons.

机译：年轻人和老年人的皮肤纺织摩擦和皮肤弹性。

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BACKGROUND/PURPOSE: The mechanical properties of human skin are known to change with ageing, rendering skin less resistant to friction and shear forces, as well as more vulnerable to wounds. Until now, only few and contradictory results on the age-dependent friction properties of skin have been reported. This study has investigated in detail the influence of age on the friction of human skin against textiles. METHODS: In vivo skin-friction measurements on a force plate were combined with skin analyses concerning elasticity, hydration, pH value and sebum content. Thirty-two young and 28 aged persons rubbed their volar forearm in a reciprocating motion against various textiles on the force plate, using defined normal loads and sliding velocities, representing clinically relevant contact conditions. RESULTS: Mean friction coefficients ranged from 0.30 +/- 0.04 (polytetrafluoroethylene) to 0.43 +/- 0.04 (cotton/polyester). No significant differences in the friction properties of skin were found between the age groups despite skin elasticity being significantly lower in the aged persons. Skin hydration was significantly higher in the elderly, whereas no significant differences were observed in either skin pH value or sebum content. CONCLUSION: Adhesion is usually assumed to be the dominant factor in skin friction, but our observations imply that deformation is also an important factor in the friction of aged skin. In the elderly, lower skin elasticity and skin turgor are associated with more pronounced skin tissue displacements and greater shear forces during frictional contact, emphasizing the importance of friction reduction in wound-prevention programmes.
机译：背景/目的：已知人类皮肤的机械性能会随着年龄的增长而变化，从而使皮肤对摩擦力和剪切力的抵抗力降低，并且更容易受到伤口的伤害。迄今为止，关于皮肤的随年龄变化的摩擦特性的报道很少且相互矛盾。这项研究详细研究了年龄对人体皮肤与纺织品摩擦的影响。方法：将在测力板上的体内皮肤摩擦测量与有关弹性，水合作用，pH值和皮脂含量的皮肤分析相结合。 32名年轻人和28名老年人以限定的法向载荷和滑动速度（代表临床相关的接触条件）在压板上往复运动，摩擦着其掌侧前臂抵靠着各种纺织品。结果：平均摩擦系数在0.30 +/- 0.04（聚四氟乙烯）至0.43 +/- 0.04（棉/聚酯）之间。尽管老年人的皮肤弹性显着降低，但各年龄组之间的皮肤摩擦性能没有显着差异。老年人的皮肤水合作用明显更高，而皮肤的pH值或皮脂含量均无显着差异。结论：附着力通常被认为是皮肤摩擦的主要因素，但是我们的观察表明，变形也是老化皮肤摩擦的重要因素。在老年人中，较低的皮肤弹性和皮肤膨胀与摩擦接触过程中更明显的皮肤组织位移和更大的剪切力相关，从而强调了在预防伤口的程序中减少摩擦的重要性。

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