All Outputs (9)

Simulated performance of an energy storage and return prosthetic ankle based on cams and miniature hydraulics (2022)
Journal Article
Pace, A., Gardiner, J., Kenney, L., & Howard, D. (2022). Simulated performance of an energy storage and return prosthetic ankle based on cams and miniature hydraulics. IEEE Transactions on Medical Robotics and Bionics, https://doi.org/10.1109/TMRB.2022.3146628

Prosthetic feet are limited in their ability to mimic the energy-recycling behaviour of an intact ankle, negatively affecting lower-limb amputees’ gait in terms of metabolic cost and walking speed. To overcome these weaknesses, a novel prosthetic ank... Read More about Simulated performance of an energy storage and return prosthetic ankle based on cams and miniature hydraulics.

Performance of optimised prosthetic ankle designs that are based on a hydraulic variable displacement actuator (VDA) (2017)
Journal Article
Gardiner, J., Bari, A., Kenney, L., Twiste, M., Moser, D., Zahedi, S., & Howard, D. (2017). Performance of optimised prosthetic ankle designs that are based on a hydraulic variable displacement actuator (VDA). IEEE Transactions on Neural Systems and Rehabilitation Engineering, 25(12), 2418-2426. https://doi.org/10.1109/TNSRE.2017.2763999

Current energy storage and return (ESR) prosthetic feet only marginally reduce the cost of amputee locomotion compared to basic solid ankle cushioned heel (SACH) feet, possibly due to their lack of push-off at the end of stance. To our knowledge,... Read More about Performance of optimised prosthetic ankle designs that are based on a hydraulic variable displacement actuator (VDA).

Crowd-sourced amputee gait data : a feasibility study using YouTube videos of unilateral trans-femoral gait (2016)
Journal Article
Gardiner, J., Gunarathne, N., Howard, D., & Kenney, L. (2016). Crowd-sourced amputee gait data : a feasibility study using YouTube videos of unilateral trans-femoral gait. PLoS ONE, 11(10), e0165287. https://doi.org/10.1371/journal.pone.0165287

Collecting large datasets of amputee gait data is notoriously difficult. Additionally, collecting data on less prevalent amputations or on gait activities other than level walking and running on hard surfaces is rarely attempted. However, with the we... Read More about Crowd-sourced amputee gait data : a feasibility study using YouTube videos of unilateral trans-femoral gait.

Locomotor preferences in terrestrial vertebrates: An online crowdsourcing approach to data collection (2016)
Journal Article
Lees, J., Gardiner, J., Usherwood, J., & Nudds, R. (2016). Locomotor preferences in terrestrial vertebrates: An online crowdsourcing approach to data collection. Scientific reports, 6(28825), https://doi.org/10.1038/srep28825

Understanding how animals move within their environment is a burgeoning field of research. Despite this, relatively basic data, such as the locomotor speeds that animals choose to walk at in the wild, are sparse. If animals choose to walk with dyna... Read More about Locomotor preferences in terrestrial vertebrates: An online crowdsourcing approach to data collection.

Transtibial amputee gait efficiency : energy storage and return versus solid ankle cushioned heel prosthetic feet (2016)
Journal Article
Gardiner, J., Bari, A., Howard, D., & Kenney, L. (2016). Transtibial amputee gait efficiency : energy storage and return versus solid ankle cushioned heel prosthetic feet. Journal of rehabilitation research and development, 53(6), 1133-1138. https://doi.org/10.1682/JRRD.2015.04.0066

Energy storage and return (ESR) feet have long been assumed to promote metabolically efficient amputee gait. However, despite being prescribed for approximately thirty years, there is limited evidence that they achieve this desired function. Here, we... Read More about Transtibial amputee gait efficiency : energy storage and return versus solid ankle cushioned heel prosthetic feet.

Experimental and numerical study of the flight of geese (2015)
Journal Article
Dimitriadis, G., Gardiner, J., Tickle, P., Codd, J., & Nudds, R. (2015). Experimental and numerical study of the flight of geese. https://doi.org/10.1017/s0001924000010939

The flight of barnacle geese at airspeeds representing high-speed migrating flight is investigated using experiments and simulations. The experimental part of the work involved the filming of three barnacle geese (Branta Leucopsis) flying at differen... Read More about Experimental and numerical study of the flight of geese.

An advanced shape-fitting algorithm applied to quadrupedal mammals : improving volumetric mass estimates (2015)
Journal Article
Brassey, C., & Gardiner, J. (2015). An advanced shape-fitting algorithm applied to quadrupedal mammals : improving volumetric mass estimates. Royal Society Open Science, 2(8), 150302. https://doi.org/10.1098/rsos.150302

Body mass is a fundamental physical property of an individual and has enormous bearing upon ecology and physiology. Generating reliable estimates for body mass is therefore a necessary step in many palaeontological studies. Whilst early reconstru... Read More about An advanced shape-fitting algorithm applied to quadrupedal mammals : improving volumetric mass estimates.

Excepting myotis capaccinii, the wings' contribution to take-off performance does not correlate with foraging ecology in six species of insectivorous bat (2014)
Journal Article
Gardiner, J., Altringham, J., Papadatou, E., & Nudds, R. (2014). Excepting myotis capaccinii, the wings' contribution to take-off performance does not correlate with foraging ecology in six species of insectivorous bat. Biology Open, 3(11), 1057-1062. https://doi.org/10.1242/bio.20149159

Take-off in bats is separated into two distinct phases: an initial jump and a subsequent wing powered acceleration. Here, using footage from a high-speed camera, the first comparative study of the performance during the wing induced phase of take-... Read More about Excepting myotis capaccinii, the wings' contribution to take-off performance does not correlate with foraging ecology in six species of insectivorous bat.

A novel energy storage and return prosthetic ankle using cams and miniature hydraulics
Journal Article
Pace, A., Gardiner, J., Kenney, L., & Howard, D. (in press). A novel energy storage and return prosthetic ankle using cams and miniature hydraulics. IEEE Transactions on Neural Systems and Rehabilitation Engineering,

A novel design for an energy-storage-and-return (ESR) prosthetic ankle is described, based on simple miniature hydraulics. The aim is to overcome the weaknesses of prosthetic feet currently on the market and also previous research attempts, which are... Read More about A novel energy storage and return prosthetic ankle using cams and miniature hydraulics.