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The Journal of Sports Medicine and Physical Fitness 2016 Sep 15


language: English

Effects of long term stimulation of textured insoles on postural control in health elderly

Giuseppe ANNINO 1, 2, 5, Francesco PALAZZO 2, Mohammad ALWARDAT 3, Vincenzo MANZI 6, Pietro LEBONE 2, Virginia TANCREDI 1, 2, 5, Paola SINIBALDI SALIMEI 2, 3, 4, Alfio CARONTI 2, Michele PANZARINO 2, 5, Elvira PADUA 2, 5

1 Department of Medicine Systems, University of Rome “Tor Vergata”, Rome, Italy; 2 School of Human Movement Science, University of Rome “Tor Vergata”, Rome, Italy; 3 Master of Science in ”Physical Activity and Health Promotion“ University of Rome ‘‘Tor Vergata’’, Rome, Italy; 4 Department of Biomedicine and Prevention, University of Rome “Tor Vergata”, Rome, Italy; 5 San Raffaele Online University, Rome, Italy; 6 I.R.C.C.S. San Raffaele Pisana, Rome, Italy


BACKGROUND: The aim of this study was to confirm the effects of long term (chronic) stimulating surface (textured insole) on body balance of elderly people.
METHODS: Twenty-four healthy elderly individuals were randomly distributed in two groups: control and experimental (67.75 ± 6.04 yrs, 74.55±12.14 kg, 163.7 ± 8.55 cm, 27.75 ± 3.04 kg/m2). Over one month, Control Group (CG) used smooth insoles and the Experimental Group (ExG) used textured insoles every day. Velocity net (Vnet), anteroposterior (VA/P), mediolateral (VM/L) and sway path of CoP were assessed in different eye conditions before and after the experimental procedure.
RESULTS: A mixed between-within subject ANOVA was conducted to assess the impact of soft and textured insoles and two visual conditions (vision vs no vision) across two time periods (α ≤ 0.05). The results showed any statistical difference between groups in each parameter assessed in this study. CoP, Vnet and VM/L in the experimental group showed a statistically significant effect of textured insoles only without vision (CoP: P= 0.002; η2=0.35), Vnet P=0.02; η2=0.24, VM/L P=0.04; η2=0.177) whereas VA/P showed no statistically significant effect in the same group and condition. There was no significant effect in Vnet, VA/P, VM/L and COP in control group that used smooth insole for both eye conditions.
CONCLUSIONS: The results confirm that postural stability improved in healthy elderly individuals, increasing somatosensory information's from feet plantar mechanoreceptors. Long term stimulation with textured insoles decreased CoP, Vnet and VM/L with eyes closed.

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