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Effect of push-off timing on metabolic cost during walking with a universal ankle-foot prosthesis emulator

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Organization
Abstract
Prosthesis push-off timing, isolated from push-off work, had a strong effect on metabolic cost, with optimal push-off occurring at or after opposite leg heel contact. This result roughly concurs with findings from simulations, exoskeleton experiments, and normal walking, although the optimal timing was slightly later. It is possible that a different result would be found if the prosthesis were worn by amputees, as they would not have the additional weight and leg length and are more acclimated to walking with prostheses [11]. These results confirm that the prosthesis emulator used here allows experimental tests of the influence of push-off parameters on metabolic cost. In the future a similar experimental approach could be used to optimize the assistance that amputees can get from a constrained amount of battery energy.

Citation

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Chicago
Malcolm, Philippe, Roberto Quesada, Joshua Caputo, Dirk De Clercq, and Steven Collins. 2014. “Effect of Push-off Timing on Metabolic Cost During Walking with a Universal Ankle-foot Prosthesis Emulator.” In Dynamic Walking, Abstracts.
APA
Malcolm, P., Quesada, R., Caputo, J., De Clercq, D., & Collins, S. (2014). Effect of push-off timing on metabolic cost during walking with a universal ankle-foot prosthesis emulator. Dynamic Walking, Abstracts. Presented at the Dynamic Walking 2014.
Vancouver
1.
Malcolm P, Quesada R, Caputo J, De Clercq D, Collins S. Effect of push-off timing on metabolic cost during walking with a universal ankle-foot prosthesis emulator. Dynamic Walking, Abstracts. 2014.
MLA
Malcolm, Philippe, Roberto Quesada, Joshua Caputo, et al. “Effect of Push-off Timing on Metabolic Cost During Walking with a Universal Ankle-foot Prosthesis Emulator.” Dynamic Walking, Abstracts. 2014. Print.
@inproceedings{4428933,
  abstract     = {Prosthesis  push-off  timing,  isolated  from  push-off  work, had a strong effect on metabolic cost, with optimal push-off  occurring  at  or  after opposite  leg  heel  contact.  This result  roughly  concurs  with  findings  from  simulations, exoskeleton  experiments,  and  normal  walking, although the optimal timing was slightly later. It is possible that a different  result  would  be  found  if  the  prosthesis  were worn by amputees, as they would not have the additional weight and leg length and are more acclimated to walking with  prostheses  [11].  These  results  confirm  that  the prosthesis emulator used here allows experimental tests of the influence of push-off parameters on metabolic cost. In the future a similar experimental approach could be used to  optimize  the  assistance  that  amputees  can  get  from  a constrained amount of battery energy.},
  author       = {Malcolm, Philippe and Quesada, Roberto and Caputo, Joshua and De Clercq, Dirk and Collins, Steven},
  booktitle    = {Dynamic Walking, Abstracts},
  language     = {eng},
  location     = {Z{\"u}rich, Switzerland},
  title        = {Effect of push-off timing on metabolic cost during walking with a universal ankle-foot prosthesis emulator},
  url          = {http://dynamicwalking.org/ocs/index.php/dw2014/dw2014/paper/viewFile/107/67},
  year         = {2014},
}