The effect of textured ballet shoe insoles on ankle proprioception in dancers

NewsBot · Apr 30, 2015

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The effect of textured ballet shoe insoles on ankle proprioception in dancers
Dr. Nili Steinberg, Gordon Waddington, Roger Adams, Janet Karin, Oren Tirosha
Physical Therapy in Sort; Article in Press

Highlights
•Textured insoles enhanced discrimination ability of dancers with low ability.
•Dancers with low ability improved up to the level of dancers with good ability.
•Textured insoles increased the activity of receptors in the plantar surface.
•Increased plantar sensitivity might decrease the risk of ankle injury.
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Background
Impaired ankle inversion movement discrimination (AIMD) can lead to ankle sprain injuries. The aim of this study was to explore whether wearing textured insoles improved AIMD compared with barefoot, ballet shoes and smooth insoles, among dancers.

Methods
Forty-four adolescent and mature male and female dancers, aged 13-19, from The Australian Ballet School were tested for AIMD while barefoot, wearing ballet shoes, wearing smooth insoles, and wearing textured insoles.

Results
No interaction was found between the four different footwear conditions, the two genders, or the two levels of dancers in AIMD (p>.05). An interaction was found between the four different footwear conditions and the three tertiles when tested in ballet shoes (p=.006). Although significant differences were found between the upper tertiles and the lower tertiles when tested with ballet shoes, barefoot and with smooth insoles (p<.001; p<.001; p=.047, respectively), when testing with textured insoles dancers in the lower tertile obtained similar scores to those obtained by dancers in the upper tertile (p=.911).

Conclusion
Textured insoles improved the discrimination scores of dancers with low AIMD, suggesting that textured insoles may trigger the cutaneous receptors in the plantar surface, increasing the awareness of ankle positioning, which in turn might decrease the chance of ankle injury.
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NewsBot · Sep 3, 2015

Does Wearing Textured Insoles during Non-class Time Improve Proprioception in Professional Dancers?
N. Steinberg, O. Tirosh, R. Adams, J. Karin, G. Waddington
Int J Sports Med

This study sought to determine whether textured insoles inserted in the sports shoes of young dancers improved their inversion and eversion ankle movement discrimination. 26 ballet dancers (14 female, 12 male) from the Australian Ballet School, ages 14–19 years, were divided into 2 groups according to sex and class levels. During the first 4 weeks, the first intervention group (GRP1) was asked to wear textured insoles in their sports shoes during non-class periods, and the second intervention group (GRP2) followed standard practice. In the next 4 weeks, GRP2 was asked to wear the textured insoles and GRP1 did not wear the textured insoles. Participants were tested pre-intervention, after 4 weeks, and at 8 weeks for both inversion and eversion ankle discrimination. In both inversion and eversion testing positions, interaction was found between the 2 groups and the 3 testing times (p<0.001), with significant differences between the first testing and the second testing (p=0.038 and p=0.019, respectively), and between the third testing and the second testing (p=0.003 and p=0.029, respectively). In conclusion, the stimulation to the proprioceptive system arising from textured insoles worn for 4 weeks was sufficient to improve the ankle proprioception of ballet dancers, in both inversion and eversion movements.
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NewsBot · Apr 21, 2017

Can textured insoles improve ankle proprioception and performance in dancers?
Steinberg N et al
J Sports Sci. 2016 Aug;34(15):1430-7. doi: 10.1080/02640414.2015.1117120

With the aim of determining both the acute and the chronic effects of textured insoles on the ankle discrimination and performance ability of dancers, 60 ballet dancers from the Australian Ballet School, aged 14-19 years, were divided into three groups (two intervention groups and a control group), age- and level-matched. In the first 5 weeks (weeks 1 to 5), the first intervention group (GRP1) was asked to wear textured insoles in their ballet shoes and the second intervention group (GRP2) was not given textured insoles to wear. In the next 5 weeks (weeks 6 to 10), GRP2 was asked to wear the same type of textured insoles and GRP1 did not wear the textured insoles. The control group (CTRL) did not wear textured insoles during the whole 10 weeks. All participants were tested preintervention, after 5 weeks and after 10 weeks for ankle discrimination score (AUC scores). Dance performance was assessed by 5-7 dance teachers. Pre-to-post change in AUC scores was significantly greater for the groups wearing insoles than for the controls (P = .046) and the size of pre-to-post changes did not differ between the two intervention groups (P = .834). Significant correlation was found between ankle discrimination score and performance scores, using the textured insoles (r = .412; P = .024). In conclusion, the stimulation to the proprioceptive system arising from textured insoles worn for five weeks was sufficient to improve the proprioceptive ability and performance ability of ballet dancers.
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