Outputs (72)

Automated detection of instantaneous gait events using time frequency analysis and manifold embedding (2013)
Journal Article
using time frequency analysis and manifold embedding. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 21(6), 908-915. https://doi.org/10.1109/TNSRE.2013.2239313

Accelerometry is a widely used sensing modality in human biomechanics due to its portability, non-invasiveness, and accuracy. However, difficulties lie in signal variability and interpretation in relation to biomechanical events. In walking, heel st... Read More about Automated detection of instantaneous gait events using time frequency analysis and manifold embedding.

The effects of prosthetic ankle stiffness on ankle and knee kinematics, prosthetic limb loading, and net metabolic cost of trans-tibial amputee gait (2013)
Journal Article
Major, M., Twiste, M., Kenney, L., & Howard, D. (2014). The effects of prosthetic ankle stiffness on ankle and knee kinematics, prosthetic limb loading, and net metabolic cost of trans-tibial amputee gait. Clinical Biomechanics, 29(1), 98-104. https://doi.org/10.1016/j.clinbiomech.2013.10.012

Background Previous studies of commercially-available trans-tibial prosthetic components have been unable to provide clear insight into the relationships between prosthetic mechanical properties and user performance (i.e., gait quality and energy ex... Read More about The effects of prosthetic ankle stiffness on ankle and knee kinematics, prosthetic limb loading, and net metabolic cost of trans-tibial amputee gait.

Automatic detection of lift-off and touch-down of a pick-up walker using 3D kinematics (2013)
Journal Article
Grootveld, L., Thies, S., Ogden, D., Howard, D., & Kenney, L. (2014). Automatic detection of lift-off and touch-down of a pick-up walker using 3D kinematics. Medical Engineering and Physics, 36(2), 255-260. https://doi.org/10.1016/j.medengphy.2013.08.008

Walking aids have been associated with falls and it is believed that incorrect use limits their usefulness. Measures are therefore needed that characterize their stable use and the classification of key events in walking aid movement is the first ste... Read More about Automatic detection of lift-off and touch-down of a pick-up walker using 3D kinematics.

Stance phase mechanical characterization of transtibial prostheses distal to the socket : a review (2012)
Journal Article
Major, M., Kenney, L., Twiste, M., & Howard, D. (2012). Stance phase mechanical characterization of transtibial prostheses distal to the socket : a review. Journal of rehabilitation research and development, 49(6), 815-830. https://doi.org/10.1682/JRRD.2011.06.0108

Achieving the required functionality of a trans-tibial prosthesis during the stance phase of gait (e.g., shock absorption, close to normal roll-over characteristics, and smooth transition into swing) depends on the “Amputee Independent Prosthesis P... Read More about Stance phase mechanical characterization of transtibial prostheses distal to the socket : a review.

The effects of transverse rotation angle on compression and effective lever arm of prosthetic feet during simulated stance (2012)
Journal Article
Major, M., Howard, D., Jones, R., & Twiste, M. (2012). The effects of transverse rotation angle on compression and effective lever arm of prosthetic feet during simulated stance. Prosthetics and Orthotics International, 36(2), 231-235. https://doi.org/10.1177/0309364611435996

Background and Aim: Unlike sagittal plane prosthesis alignment, few studies have observed the effects of transverse plane alignment on gait and prosthesis behaviour. Changes in transverse plane rotation angle will rotate the points of loading on the... Read More about The effects of transverse rotation angle on compression and effective lever arm of prosthetic feet during simulated stance.

Effects of ramp negotiation, paving type and shoe sole geometry on toe clearance in young adults (2011)
Journal Article
Thies, S., Jones, R., Kenney, L., Howard, D., & Baker, R. (2011). Effects of ramp negotiation, paving type and shoe sole geometry on toe clearance in young adults. Journal of Biomechanics, 44(15), 2679-2684. https://doi.org/10.1016/j.jbiomech.2011.07.027

Trips are a major cause of falls and result from involuntary contact of the foot with the ground during the swing phase of gait. Adequate toe clearance during swing is therefore crucial for safe locomotion. To date, little is known about the effects... Read More about Effects of ramp negotiation, paving type and shoe sole geometry on toe clearance in young adults.

The use of hydrogel as an electrode-skin interface for electrode array FES applications (2011)
Journal Article
Cooper, G., Barker, A., Heller, B., Good, T., Kenney, L., & Howard, D. (2011). The use of hydrogel as an electrode-skin interface for electrode array FES applications. Medical Engineering and Physics, 33(8), 967-982. https://doi.org/10.1016/j.medengphy.2011.03.008

Functional electrical stimulation is commonly used to restore function in post-stroke patients in upper and lower limb applications. Location of the electrodes can be a problem hence some research groups have begun to experiment with electrode arrays... Read More about The use of hydrogel as an electrode-skin interface for electrode array FES applications.

A comparative evaluation of sonomyography, electromyography, force, and wrist angle in a discrete tracking task (2011)
Journal Article
Guo, J., Zheng, Y., Kenney, L., Bowen, A., Howard, D., & Canderle, J. (2011). A comparative evaluation of sonomyography, electromyography, force, and wrist angle in a discrete tracking task. Ultrasound in Medicine and Biology, 37(6), 884-891. https://doi.org/10.1016/j.ultrasmedbio.2011.03.008

We have previously used the real-time change of muscle thickness detected using ultrasound, namely sonomyography (SMG), for prosthesis motor control purposes. In the present study, we further compared subjects’ performance using SMG and surface elect... Read More about A comparative evaluation of sonomyography, electromyography, force, and wrist angle in a discrete tracking task.

Biomechanics for inclusive urban design : effects of tactile paving on older adults’ gait when crossing the street (2011)
Journal Article
Thies, S., Kenney, L., Howard, D., Nester, C., Ormerod, M., Newton, R., …Maclennan, H. (2011). Biomechanics for inclusive urban design : effects of tactile paving on older adults’ gait when crossing the street. Journal of Biomechanics, 44(8), 1599-1604. https://doi.org/10.1016/j.jbiomech.2010.12.016

In light of our ageing population it is important that the urban environment is easily accessible and hence supports older adults’ independence. Tactile ‘blister’ paving was originally designed to provide guidance for visually impaired people at pede... Read More about Biomechanics for inclusive urban design : effects of tactile paving on older adults’ gait when crossing the street.

Amputee independent prosthesis properties - a new model for description and measurement (2011)
Journal Article
Major, M., Twiste, M., Kenney, L., & Howard, D. (2011). Amputee independent prosthesis properties - a new model for description and measurement. Journal of Biomechanics, 44(14), 2572-2575. https://doi.org/10.1016/j.jbiomech.2011.07.016

A model is presented for describing the Amputee Independent Prosthesis Properties (AIPP) of complete assemblies of trans-tibial prosthetic components distal to the socket. This new AIPP model includes features of both lumped parameter and roll-over m... Read More about Amputee independent prosthesis properties - a new model for description and measurement.