Skin-textile friction and skin elasticity in young and aged persons

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 repo...

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Vydáno v:Skin research and technology Ročník 15; číslo 3; s. 288 - 298
Hlavní autoři: Gerhardt, L.-C., Lenz, A., Spencer, N. D., Münzer, T., Derler, S.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Oxford, UK Blackwell Publishing Ltd 01.08.2009
Témata:
Adolescent
Adult
age
Aged
Aged, 80 and over
Aging - physiology
biotribology
Elastic Modulus - physiology
elasticity
Female
Friction
human skin
Humans
Male
Middle Aged
Skin Physiological Phenomena
Skin Tests - methods
Surface Properties
Textiles
Young Adult
ISSN:0909-752X, 1600-0846, 1600-0846
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Shrnutí: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.
Bibliografie:istex:2A37C400D22E6DED07AFA04D44F076E37DDB2B58
ark:/67375/WNG-NPTCCW98-7
ArticleID:SRT363
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0909-752X
1600-0846
1600-0846
DOI:10.1111/j.1600-0846.2009.00363.x