Trial reportJournal of neuroengineering and rehabilitation2018
Effects of a powered ankle-foot orthosis on perturbed standing balance.
Trial report in Journal of neuroengineering and rehabilitation, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
26 citing papers in PubMed, 60 citations in OpenAlex.
- Humans falling in holes: adaptations in lower-limb joint mechanics in response to a rapid change in substrate height during human hopping.Journal of the Royal Society, Interface · 2019Trial
- Center of mass feedback for joint torque control during perturbed standing: a potential generalizable control approach for balance augmentation in wearable robots.Journal of neuroengineering and rehabilitation · 2026Article
- Center of Mass Feedback for joint torque control: a generalizable approach for balance augmentation in wearable robots.Research square · 2026Article
- Feasibility of mechanomyography-based fatigue classification for passive lower-limb exoskeleton evaluation: A pilot study.PloS one · 2026Article
- Ankle Exoskeletons May Hinder Standing Balance in Simple Models of Older and Younger Adults.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2025Article
- Agency-preserving robotic assistance for grasp slip recovery in body-powered prostheses.Frontiers in robotics and AI · 2025Article
- Assisting Standing Balance Recovery for Parkinson's Patients with a Lower-Extremity Exoskeleton Robot.Sensors (Basel, Switzerland) · 2024Article
- Ankle Exoskeletons May Hinder Standing Balance in Simple Models of Older and Younger Adults.ArXiv · 2024Article
- Effects of passive ankle exoskeletons on neuromuscular function during exaggerated standing sway.Royal Society open science · 2024Article
- Torque-ratio-adjustable ankle-foot exoskeleton for resisting perturbation in forward direction within fan-shaped region of pelvis horizontal plane.Frontiers in bioengineering and biotechnology · 2024Article
- Assisting walking balance using a bio-inspired exoskeleton controller.Journal of neuroengineering and rehabilitation · 2023Article
- Exoskeletons need to react faster than physiological responses to improve standing balance.Science robotics · 2023Article
- Article
- Introduction to a Twin Dual-Axis Robotic Platform for Studies of Lower Limb Biomechanics.IEEE journal of translational engineering in health and medicine · 2023Article
- Machine-learning-based coordination of powered ankle-foot orthosis and functional electrical stimulation for gait control.Frontiers in bioengineering and biotechnology · 2023Article
- Efficacy of stumble recovery assistance in a knee exoskeleton for individuals with simulated mobility impairment: A pilot study.Wearable technologies · 2023Article
- Biomechanical Effects of Adding an Ankle Soft Actuation in a Unilateral Exoskeleton.Biosensors · 2022Article
- Evaluation of an ankle-foot orthosis effect on gait transitional stability during ramp ascent/descent.Medical & biological engineering & computing · 2022Article
- Application of Wearable Sensors in Actuation and Control of Powered Ankle Exoskeletons: A Comprehensive Review.Sensors (Basel, Switzerland) · 2022Review
- Cooperative ankle-exoskeleton control can reduce effort to recover balance after unexpected disturbances during walking.Journal of neuroengineering and rehabilitation · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundLower extremity exoskeletons are mainly used to provide stepping support, while balancing is left to the user. Designing balance controllers is one of the biggest challenges in the development of exoskeletons. The goal of this study was to design and evaluate a balance controller for a powered ankle-foot orthosis and assess its effect on the standing balance of healthy subjects.
methodsWe designed and implemented a balance controller based on the subject's body sway. This controller was compared to a simple virtual-ankle stiffness and a zero impedance controller. Ten healthy subjects wearing a powered ankle-foot orthosis had to maintain standing balance without stepping while receiving anteroposterior pushes. Center of mass kinematics, ankle torques and muscle activity of the lower legs were analyzed to assess the balance performance of the user and exoskeleton.
resultsThe different controllers did not significantly affect the center of mass responses. However, the body sway based controller resulted in a decrease of 29% in the biological ankle torque compared to the zero impedance controller and a decrease of 32% compared to the virtual-ankle stiffness. Furthermore, the soleus muscle activity of the left and right leg decreased on average with 8%, while the tibialis anterior muscle activity increased with 47% compared to zero impedance.
conclusionThe body sway based controller generated human-like torque profiles, whereas the virtual-ankle stiffness did not. As a result, the powered ankle-foot orthosis with the body sway based controller was effective in assisting the healthy subjects in maintaining balance, although the improvements were not seen in the body sway response, but in the subjects' decreased biological ankle torques to counteract the perturbations. This decrease was a combined effect of decreased soleus muscle activity and increased tibialis anterior muscle activity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.