In Vivo Evaluation of the Skin Tensile Strength by the Suction Method: Pilot Study Coping with Hysteresis and Creep Extension

Table 1

Steep and progressive suction procedures without outer contention. Median and range values of viscoelastic parameters related to one single suction cycle according to the two recording modalities for the two probe aperture diameters (AD 2 mm and AD 4 mm) on normal skin and connective tissue disorders.

Skin condition	MD (mm)		RD (mm)
	AD 2 mm	AD 4 mm	AD 2 mm	AD 4 mm
Steep modality
Normal	0.28	0.42	0.08	0.14
	(0.12–0.33)	(0.21–0.59)	(0.05–0.16)	(0.08–0.22)
Scleroderma	0.19	0.25**	0.10	0.13
	(0.09–0.24)	(0.10–0.37)	(0.04–0.18)	(0.08–0.18)
Ehlers-Danlos	0.30	0.61*	0.03	0.09*
	(0.15–0.50)	(0.27–0.89)	(0.02–0.12)	(0.04–0.13)
Dermatoporosis	0.24	0.45	0.13	0.31*
	(0.14–0.35)	(0.18–0.63)	(0.09–0.23)	(0.16–0.35)
Acromegaly	0.18	0.30	0.10	0.20
	(0.09–0.30)	(0.23–0.39)	(0.08–0.20)	(0.13–0.17)
Progressive modality
Normal	0.21	0.38	0.07	0.09
	(0.11–0.26)	(0.28–0.51)	(0.05–0.12)	(0.07–0.13)
Scleroderma	0.17	0.23**	0.13	0.17*
	(0.05–0.21)	(0.10–0.31)	(0.07–0.18)	(0.06–0.20)
Ehlers-Danlos	0.26	0.47	0.06	0.05**
	(0.08–0.43)	(0.39–0.87)	(0.04–0.15)	(0.03–0.08)
Dermatoporosis	0.24	0.42	0.21*	0.34*
	(0.16–0.43)	(0.32–0.65)	(0.15–0.33)	(0.24–0.36)
Acromegaly	0.19	0.27**	0.16*	0.21*
	(0.13–0.31)	(0.17–0.40)	(0.14–0.22)	(0.12–0.24)

Compared to normal; ∗P < 0.05; ∗∗P < 0.01.