Gait enhancing mobile shoe (GEMS) for rehabilitation

Groot, Allison de; Decker, Ryan; Reed, Kyle B.

doi:10.1109/whc.2009.4810842

Cited by 9 publications

(10 citation statements)

References 25 publications

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“…Other smaller, less complex and more affordable locomotion devices exist that enable locomotion following the same motion compensation principle. Foot-wearable devices like the Powered-Shoes [6] and, more recently, the Gait Enhancing Mobile Shoe [1], compensate the user's motion without being attached to a bulky structure. However, they cannot render slopes or any kind of uneven terrain.…”

Section: Related Workmentioning

confidence: 99%

Walking up and down in immersive virtual worlds: Novel interactive techniques based on visual feedback

Marchal

Lécuyer

Cirio

et al. 2010

2010 IEEE Symposium on 3D User Interfaces (3DUI)

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We introduce novel interactive techniques to simulate the sensation of walking up and down in immersive virtual worlds based on visual feedback. Our method consists in modifying the motion of the virtual subjective camera while the user is really walking in an immersive virtual environment. The modification of the virtual viewpoint is a function of the variations in the height of the virtual ground. Three effects are proposed: (1) a straightforward modification of the camera's height, (2) a modification of the camera's navigation velocity, (3) a modification of the camera's orientation. They were tested in an immersive virtual reality setup in which the user is really walking. A Desktop configuration where the user is seated and controls input devices was also tested and compared to the real walking configuration. Experimental results show that our visual techniques are very efficient for the simulation of two canonical shapes: bumps and holes located on the ground. Interestingly, a strong "orientation-height illusion" is found, as changes in pitch viewing orientation produce perception of height changes (although camera's height remains strictly the same in this case). Our visual effects could be applied in various virtual reality applications such as urban or architectural project reviews or training, as well as in videogames, in order to provide the sensation of walking on uneven grounds.

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Section: Related Workmentioning

confidence: 99%

Walking up and down in immersive virtual worlds: Novel interactive techniques based on visual feedback

Marchal

Lécuyer

Cirio

et al. 2010

2010 IEEE Symposium on 3D User Interfaces (3DUI)

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“…This includes the kinematics of circular and noncircular (elliptical) belt pulleys [12] and gears [13], and the kinematics of rack and pinion type of mechanisms [14]. Again, little is found in this area for free rolling and force redirection of irregular shapes.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Shapes: Analysis, Verification, and Applications

Handžić

Reed

2014

Journal of Mechanical Design

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A circular shape placed on an incline will roll; similarly, an irregularly shaped object, such as the Archimedean spiral, will roll on a flat surface when a force is applied to its axle. This rolling is dependent on the specific shape and the applied force (magnitude and location). In this paper, we derive formulas that define the behavior of irregular 2D and 3D shapes on a flat plane when a weight is applied to the shape's axle. These kinetic shape (KS) formulas also define and predict shapes that exert given ground reaction forces when a known weight is applied at the axle rotation point. Three 2D KS design examples are physically verified statically with good correlation to predicted values. Motion simulations of unrestrained 2D KS yielded expected results in shape dynamics and self-stabilization. We also put forth practical application ideas and research for 2D and 3D KS such as in robotics and gait rehabilitation.

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“…The GEM Shoe presented in this paper is the successor of previous versions [12][19]. The first GEMS [12] was passive, but had no control of the backward foot motion.…”

Section: Introductionmentioning

confidence: 99%

“…The first GEMS [12] was passive, but had no control of the backward foot motion. Although it moved the wearer’s foot backward, it did so in a jerky and fairly unpredictable motion comparable to sliding on ice or a slippery surface.…”

Section: Introductionmentioning

confidence: 99%

Developing a Gait Enhancing Mobile Shoe to alter over-ground walking coordination

Handžić

Vasudevan

Reed

2012

2012 IEEE International Conference on Robotics and Automation

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This paper presents a Gait Enhancing Mobile Shoe (GEMS) that mimics the desirable kinematics of a split-belt treadmill except that it does so over ground. Split-belt treadmills, with two separate treads running at different speeds, have been found useful in the rehabilitation of persons with asymmetric walking patterns. Although in preliminary testing, beneficial after-effects have been recorded, various drawbacks include the stationary nature of the split-belt treadmill and the inability to keep a person on the split-belt treadmill for an extended period of time. For this reason, the after-effects for long-term gait training are still unknown. The mobile ability of the GEMS outlined in this paper enables it to be worn in different environments such as in one’s own house and also enables it to be worn for a longer period of time since the GEMS is completely passive. Healthy subject testing has demonstrated that wearing this shoe for twenty minutes can alter the wearer’s gait and will generate after-effects in a similar manner as a split-belt treadmill does.

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Gait enhancing mobile shoe (GEMS) for rehabilitation

Cited by 9 publications

References 25 publications

Walking up and down in immersive virtual worlds: Novel interactive techniques based on visual feedback

Walking up and down in immersive virtual worlds: Novel interactive techniques based on visual feedback

Kinetic Shapes: Analysis, Verification, and Applications

Developing a Gait Enhancing Mobile Shoe to alter over-ground walking coordination

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