Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

On/off control in FES-induced standing up: a model study and experiments.

A J Mulder1, P H Veltink, H B Boom

  • 1Twente University, Enschede, The Netherlands.

Medical & Biological Engineering & Computing
|March 1, 1992
PubMed
Summary

This study investigated controlling paraplegic standing using closed-loop muscle activation, reducing knee joint end-velocity and activation time significantly compared to open-loop methods.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Estimation of sagittal-plane whole-body angular momentum during perturbed and unperturbed gait using simplified body models.

Human movement science·2024
Same author

Quantifying Quality of Reaching Movements Longitudinally Post-Stroke: A Systematic Review.

Neurorehabilitation and neural repair·2022
Same author

Detection of the Intention to Grasp During Reaching in Stroke Using Inertial Sensing.

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society·2019
Same author

Detection of the intention to grasp during reach movements.

Journal of rehabilitation and assistive technologies engineering·2019
Same author

The effect of metabolic alkalosis on the ventilatory response in healthy subjects.

Respiratory physiology & neurobiology·2018
Same author

Components of predatory behaviour underlying density-dependent prey-size selection by Notiophilus biguttatus F. (Carabidae, Coleoptera).

Oecologia·2017

Area of Science:

  • Biomechanics
  • Neurorehabilitation
  • Robotics

Background:

  • Paraplegic standing requires controlled knee joint movement to prevent instability.
  • Existing open-loop control methods lack precision in managing knee joint dynamics during upright transitions.

Purpose of the Study:

  • To evaluate a closed-loop on/off control strategy for knee extensor muscles.
  • To compare its effectiveness against open-loop control for paraplegic standing.
  • To assess the impact of arm support and muscle dynamics on the control system.

Main Methods:

  • A model study and experiments with paraplegic patients were conducted.
  • Closed-loop and open-loop control strategies for knee extensor muscles were implemented.
  • Key metrics included knee joint end-velocity and muscle activation time.

Related Experiment Videos

Main Results:

  • The closed-loop control scheme reduced knee joint end-velocity by approximately 60%.
  • Knee extensor muscle activation time was reduced to about 70% of open-loop values.
  • System sensitivity to arm support and muscle dynamics was analyzed.

Conclusions:

  • Closed-loop control offers a more effective method for managing paraplegic standing.
  • This approach enhances stability and reduces the risk of knee hyperextension.
  • Further research can optimize control parameters for improved functional outcomes.