Article (Scientific journals)
Age- and Body Mass Index-Related Changes in Cutaneous Shear Wave Velocity
Hermanns-Le, Trinh; Jonlet, F.; Scheen, André et al.
2001In Experimental Gerontology, 36 (2), p. 363-72
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Keywords :
Body mass index; Skin tension line; Skin anisotropy; Shear wave propagation
Abstract :
[en] BACKGROUND: The in vivo visco-elastic characteristics of skin depend on a series of physiopathological parameters. Among them, the age-related intrinsic tensile properties and the preconditioning of the tissues set under tension by the hypodermal volume might be of importance. AIMS: To revisit the influence of age and body mass on the firmness and mechanical anisotropy of the skin as determined by the velocity of the shear wave propagation. METHOD: Resonance running time measurements (RRTM) were performed on the mid volar forearm in 110 adults of both sexes. In each subject 16 RRTM were collected at four different precise angles with regard to the limb axis. We recorded the lowest, the highest and the mean multidirectional RRTM as well as the coefficient of variation (CV) of the latter value. In addition, the body mass index (BMI) was calculated. RESULTS: Age and BMI did not influence the minimum RRTM. In contrast, the maximum RRTM as well as the mean and CV of the multidirectional RRTM, significantly rose in a progressively increasing proportion of the subjects older than 60 years. These changes were only encountered in subjects with a normal BMI ranging from 18 to 25. Sex-related differences were not disclosed. CONCLUSIONS: The intrinsic skin tension lines identified by the minimum RRTM are not significantly altered with age and BMI variations. In contrast, skin laxity identified by larger maximum and mean multidirectional RRTM may increase after 60 years of age in subjects with a normal BMI. This is accompanied by increased skin mechanical anisotropy identified by CV values of the multidirectional RRTM over 40%.
Disciplines :
General & internal medicine
Author, co-author :
Hermanns-Le, Trinh ;  Université de Liège - ULiège > Département des sciences cliniques > Dermatopathologie
Jonlet, F.;  Université de Liège - ULiège > Département des sciences cliniques > Dermatopathologie
Scheen, André  ;  Université de Liège - ULiège > Département des sciences cliniques > Diabétologie, nutrition et maladie métaboliques - Médecine interne générale
Pierard, Gérald ;  Université de Liège - ULiège > Département des sciences cliniques > Dermatopathologie
Language :
English
Title :
Age- and Body Mass Index-Related Changes in Cutaneous Shear Wave Velocity
Publication date :
February 2001
Journal title :
Experimental Gerontology
ISSN :
0531-5565
eISSN :
1873-6815
Publisher :
Elsevier, Netherlands
Volume :
36
Issue :
2
Pages :
363-72
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 February 2009

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