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Improving stability of people wearing a lower extremity Wearable Exoskeleton (WE) is one of the biggest challenges in the field. The goal of this preliminary study was to improve balance recovery from perturbations in people with incomplete Spinal Cord Injury (SCI) assisted by a WE with specifically developed balance controller. The WE has actuated ankle and knee joints, which were controlled by using a body sway-based balance controller. Two test pilots participated in 5 training sessions, devoted to enhance the use of the robot, and in pre/post assessments. Their balance during quiet standing was perturbed through pushes in forward direction.
The controller was effective in supporting balance recovery in both tests pilots as reflected by a smaller sway amplitude and recovery time when compared with a minimal impedance controller. Moreover, the training resulted in a further reduction of the sway amplitude and recovery time in one of the test pilots whereas it had not an additional beneficial effect for the other subject.
In conclusion, the novel balance controller can effectively assist people with incomplete SCI in maintaining standing balance and a dedicated training has the potential to further improve balance.
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Emmens, A., van Asseldonk, E.H.F., Kooij, H.V.D.: Effects of a powered Ankle-Foot Orthosis on perturbed standing balance. Journal of Neuroengineering and Rehabilitation, to be published
Meijneke, C., Wang, S., Sluiter, V., van der Kooij, H.: Introducing a modular, personalized exoskeleton for ankle and knee support of individuals with a spinal cord injury. In: González-Vargas, J., Ibáñez, J., Contreras-Vidal, J.L., van der Kooij, H., Pons, J.L., (eds.) Wearable robotics: challenges and trends, vol. 16, no. 1, pp. 169–173. Springer International Publishing, Cham (2016)
- Training Balance Recovery in People with Incomplete SCI Wearing a Wearable Exoskeleton
E. H. F. van Asseldonk
T. J. H. Brug
N. L. Tagliamonte
H. van der Kooij
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