Todd C. Pataky
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View article: How many strides are needed for reliable markerless gait analysis?
How many strides are needed for reliable markerless gait analysis? Open
A minimum of 7 strides contributing to the average observation is generally sufficient to achieve reliable markerless kinematics and kinetics in older adults. These results have particular relevance to populations who may experience limite…
View article: Bipedalism or bipedalisms: The os coxae of StW 573
Bipedalism or bipedalisms: The os coxae of StW 573 Open
There has been a long debate about the possibility of multiple contemporaneous species of Australopithecus in both eastern and southern Africa, potentially exhibiting different forms of bipedal locomotion. Here, we describe the previously …
View article: Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following anterior cruciate ligament reconstruction? A secondary analysis
Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following anterior cruciate ligament reconstruction? A secondary analysis Open
Purpose Elastic knee sleeves are often worn following anterior cruciate ligament (ACL) reconstruction. The study aimed to define immediate and 6-week effects of wearing a knee sleeve on ground reaction forces (GRF) and knee joint power dur…
View article: Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following ACL reconstruction? An explanatory analysis
Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following ACL reconstruction? An explanatory analysis Open
Purpose Elastic knee sleeves are often worn following anterior cruciate ligament reconstruction but mechanisms underlying observed changes in movement patterns are still unclear. The aim of this study was to determine the immediate and 6-w…
View article: Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following ACL reconstruction? Discrete and time-continuous datasets
Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following ACL reconstruction? Discrete and time-continuous datasets Open
Using a cross-over design, we estimated GRF and knee kinematics and kinetics during a step-down hop for 30 participants (age 26.1 [SD 6.7] years, 14 women) following ACL reconstruction (median 16 months post-surgery) with and without weari…
View article: Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following ACL reconstruction? Discrete and time-continuous datasets
Can a knee sleeve influence ground reaction forces and knee joint power during a step-down hop in participants following ACL reconstruction? Discrete and time-continuous datasets Open
Using a cross-over design, we estimated GRF and knee kinematics and kinetics during a step-down hop for 30 participants (age 26.1 [SD 6.7] years, 14 women) following ACL reconstruction (median 16 months post-surgery) with and without weari…
View article: pyemgpipeline: A Python package for electromyographyprocessing
pyemgpipeline: A Python package for electromyographyprocessing Open
We have developed an electromyography (EMG) signal processing pipeline package called pyemgpipeline, which is suitable for both surface EMG and intramuscular EMG processing.pyemgpipeline implements internationally accepted EMG processing c…
View article: Immediate and 6-Week Effects of Wearing a Knee Sleeve Following Anterior Cruciate Ligament Reconstruction on Knee Kinematics and Kinetics: A Cross-Over Laboratory and Randomised Clinical Trial
Immediate and 6-Week Effects of Wearing a Knee Sleeve Following Anterior Cruciate Ligament Reconstruction on Knee Kinematics and Kinetics: A Cross-Over Laboratory and Randomised Clinical Trial Open
Background Elastic knee sleeves are often worn following anterior cruciate ligament reconstruction (ACLR) but their effects on movement patterns are unclear. Aim To determine the immediate and 6-week effects of wearing a knee sleeve on bio…
View article: MovementRx: Versatile clinical movement analysis using Statistical Parametric Mapping
MovementRx: Versatile clinical movement analysis using Statistical Parametric Mapping Open
Background: Clinical gait analysis is an important field of biomechanics that Is influenced by subjectivity, which can lead to type I and II errors. Statistical Parametric Mapping (SPM) is a classical hypothesis testing method that can ope…
View article: Peer Review #2 of "Intra-subject sample size effects in plantar pressure analyses (v0.1)"
Peer Review #2 of "Intra-subject sample size effects in plantar pressure analyses (v0.1)" Open
Background.Recent work using large datasets (>500 records per subject) has demonstrated seemingly high levels of step-to-step variation in peak plantar pressure within human individuals during walking.One intuitive consequence of this vari…
View article: Intra-subject sample size effects in plantar pressure analyses
Intra-subject sample size effects in plantar pressure analyses Open
Background Recent work using large datasets (>500 records per subject) has demonstrated seemingly high levels of step-to-step variation in peak plantar pressure within human individuals during walking. One intuitive consequence of this var…
View article: Peer Review #2 of "Intra-subject sample size effects in plantar pressure analyses (v0.2)"
Peer Review #2 of "Intra-subject sample size effects in plantar pressure analyses (v0.2)" Open
Background.Recent work using large datasets (>500 records per subject) has demonstrated seemingly high levels of step-to-step variation in peak plantar pressure within human individuals during walking.One intuitive consequence of this vari…
View article: Landmark-free, parametric hypothesis tests regarding two-dimensional contour shapes using coherent point drift registration and statistical parametric mapping
Landmark-free, parametric hypothesis tests regarding two-dimensional contour shapes using coherent point drift registration and statistical parametric mapping Open
This paper proposes a computational framework for automated, landmark-free hypothesis testing of 2D contour shapes (i.e., shape outlines), and implements one realization of that framework. The proposed framework consists of point set regis…
View article: A comparison of three-dimensional rotation formalisms for least-squares and Bayesian inverse kinematics
A comparison of three-dimensional rotation formalisms for least-squares and Bayesian inverse kinematics Open
Marker-based inverse kinematics (IK) is prone to errors arising from measurementnoise and soft-tissue artefacts. Various least-squares and Bayesian methods canbe applied to limit the estimation error to a minimum. Recently proposed meth-od…
View article: StW 573 <b><i>Australopithecus prometheus</i></b>: Its Significance for an Australopith Bauplan
StW 573 <b><i>Australopithecus prometheus</i></b>: Its Significance for an Australopith Bauplan Open
The StW 573 skeleton of Australopithecus prometheus from Sterkfontein Member 2 is some 93% complete and thus by far the most complete member of that genus yet found. Firmly dated at 3.67 Ma, it is one of the earliest specimens of its genus…
View article: Integrated jerk as an indicator of affinity for artificial agent kinematics: laptop and virtual reality experiments involving index finger motion during two-digit grasping
Integrated jerk as an indicator of affinity for artificial agent kinematics: laptop and virtual reality experiments involving index finger motion during two-digit grasping Open
Uncanny valley research has shown that human likeness is an important consideration when designing artificial agents. It has separately been shown that artificial agents exhibiting human-like kinematics can elicit positive perceptual respo…
View article: Peer Review #1 of "Integrated jerk as an indicator of affinity for artificial agent kinematics: laptop and virtual reality experiments involving index finger motion during two-digit grasping (v0.1)"
Peer Review #1 of "Integrated jerk as an indicator of affinity for artificial agent kinematics: laptop and virtual reality experiments involving index finger motion during two-digit grasping (v0.1)" Open
Uncanny valley research has shown that human likeness is an important consideration when designing artificial agents.It has separately been shown that artificial agents exhibiting human-like kinematics can elicit positive perceptual respon…
View article: seg1d: A Python package for Automated segmentation of one-dimensional (1D) data
seg1d: A Python package for Automated segmentation of one-dimensional (1D) data Open
The term segmentation refers to the division of a data series into segments.In this paper, segments refer to a contiguous time series which is a subset of another time series (Bouchard, 2006).Identifying these segments requires a reference…
View article: mwarp1d: Manual one-dimensional data warping in Python and PyQt
mwarp1d: Manual one-dimensional data warping in Python and PyQt Open
Warping" is a mathematical / computational process that transforms a domain like time or space so that its nodes (i.e., points in time or space) are unequally spaced.For one-dimensional (1D) domains like time, warping involves translating …