Scholarly journal articles produced by faculty and staff of the Biomechanics Research Building are collected here.

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Submissions from 2018

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Exoskeleton assistance symmetry matters: unilateral assistance reduces metabolic cost, but relatively less than bilateral assistance, Philippe Malcolm, Samuel Galle, Pieter Van den Berghe, and Dirk De Clercq

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Introducing Statistical Persistence Decay – A Quantification of Stride-to-Stride Time Interval Dependency in Human Gait, P. C. Raffalt and J. M. Yentes

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Prosthetic energy return during walking increases after 3 weeks of adaptation to a new device, Samuel F. Ray, Shane R. Wurdeman, and Kota Z. Takahashi

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Biomechanical Gait Variable Estimation Using Wearable Sensors after Unilateral Total Knee Arthroplasty, Ik-Hyun Youn, Jong-Hoon Youn, Joseph A. Zeni, and Brian A. Knarr

Submissions from 2017

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Mastoid vibration affects dynamic postural control during gait in healthy older adults, Jung Hung Chien, Mukul Mukherjee, Jenny Kent, and Nick Stergiou

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Reducing the metabolic cost of walking with an ankle exoskeleton: interaction between actuation timing and power, Samuel Galle, Philippe Malcolm, Steven Hartley Collins, and Dirk De Clercq

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Human-in-the-loop Bayesian optimization of wearable device parameters, Myunghee Kim, Ye Ding, Philippe Malcolm, Jozefien Speeckaert, Christopher Siviy, and Conor J. Walsh

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Varying negative work assistance at the ankle with a soft exosuit during loaded walking, Philippe Malcolm, Sangjun Lee, Simon Crea, Christopher Siviy, Fabricio Saucedo, Ignacio Galiana, Fausto A. Panizzolo, Kenneth G. Holt, and Conor J. Walsh

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Continuous sweep versus discrete step protocols for studying effects of wearable robot assistance magnitude, Philippe Malcolm, Denise Martineli Rossi, Christopher Siviy, Sangjun Lee, Brendan Thomas Quinlivan, Martin Grimmer, and Conor J. Walsh

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Measuring Coupling of Rhythmical Time Series Using Cross Sample Entropy and Cross Recurrence Quantification Analysis, John D. McCamley, William Denton, Elizabeth E. Lyden, and Jennifer M. Yentes

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Gait deficiencies associated with peripheral artery disease are different than chronic obstructive pulmonary disease, John D. McCamley, Eric J. Pisciotta, Jennifer M. Yentes, Shane R. Wurdeman, Stephen I. Rennard, Iraklis I. Pipinos, Jason M. Johanning, and Sara A. Myers

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Dynamics of Stride Interval Characteristics during Continuous Stairmill Climbing, Peter C. Raffalt, Srikant Vallabhajosula, Jessica J. Renz, Mukul Mukherjee, and Nicholas Stergiou

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Energy neutral: the human foot and ankle subsections combine to produce near zero net mechanical work during walking, Kota Z. Takahashi, Kate Worster, and Dustin A. Bruening

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Patients with Chronic Obstructive Pulmonary Disease Walk with Altered Step Time and Step Width Variability as Compared with Healthy Control Subjects, Jennifer M. Yentes, Stephen I. Rennard, Kendra K. Schmid, Daniel Blanke, and Nicholas Stergiou

Submissions from 2016

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The Effect of Skinfold on the Assessment of the Mean Power Frequency at the Fatigue Threshold, Alyssandra N. Baniqued, Jorge M. Zuniga, Thomas C. Strunc, Katie M. Keenan, Agrini K. Boken, and Jeffrey J. Anderson

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Effect of timing of hip extension assistance during loaded walking with a soft exosuit, Ye Ding, Fausto A. Panizzolo, Christopher Siviy, Philippe Malcolm, Ignacio Galiana, Kenneth G. Holt, and Conor J. Walsh

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THE EFFECT OF CARDIORESPIRATORY FITNESS ON THE ASSESSMENT OF THE PHYSICAL WORKING CAPACITY AT THE FATIGUE THRESHOLD, Brittney M. Mikkelsen, Jorge Zuniga, William K. Herron, Frances E. Frauso, and Anne N. Pulliam

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The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults, Justin Munafo, Michael G. Wade, Nick Stergiou, and Thomas A. Stoffregen

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A Perceptual Motor Intervention Improves Play Behavior In Children With Moderate To Severe Cerebral Palsy, Bridget O. Ryalls, Regina T. Harbourne, Lisa Kelly-Vance, Jordan Wickstrom, Nicholas Stergiou, and Anastasia Kyvelidou

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Adding Stiffness to the Foot Modulates Soleus Force-Velocity Behaviour during Human Walking, Kota Z. Takahashi, Michael T. Gross, Herman van Werkhoven, Stephen J. Piazza, and Gregory S. Sawicki

Submissions from 2015

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THE EFFECTS OF MUSCLE CROSS-SECTIONAL AREA ON THE PHYSICAL WORKING CAPACITY AT THE FATIGUE THRESHOLD, Meghan B. Barry, Jorge M. Zuniga, Makenna M. Brown, William M. Garnett, Zachary V. Hadden, Paul K. Nguyen, Geoffrey A. Supplee, and Claire J. Svobada

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Locomotor Sensory Organization Test: How Sensory Conflict Affects the Temporal Structure of Sway Variability During Gait, Jung Hung Chien, Mukul Mukherjee, Ka-Chun Siu, and Nicholas Stergiou

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Postural Sway and Gaze Can Track the Complex Motion of a Visual Target, Vassilia Hatzitaki, Nicholas Stergiou, George Sofianidis, and Anastasia Kyvelidou

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Children’s looking preference for biological motion may be related to an affinity for mathematical chaos, Joshua L. Haworth, Anastasia Kyvelidou, Wayne Fisher, and Nicholas Stergiou

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Mechanisms to increase propulsive force for individuals poststroke, HaoYuan Hsiao, Brian A. Knarr, Jill S. Higginson, and Stuart A. Binder-Macleod

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The influence of push-off timing in a robotic ankle-foot prosthesis on the energetics and mechanics of walking, Philippe Malcolm, Robert E. Quesada, Joshua M. Caputo, and Steven H. Collins

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Plantar tactile perturbations enhance transfer of split-belt locomotor adaptation, Mukul Mukherjee, Diderik Jan Anthony Eikema, Jung Hung Chien, Sara A. Myers, Melissa Scott-Pandorf, Jacob J. Bloomberg, and Nicholas Stergiou

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Spatiotemporal Changes Posttreatment in Peripheral Arterial Disease, Sara A. Myers, Neil B. Huben, Jennifer M. Yentes, John D. McCamley, Elizabeth E. Lyden, Iraklis I. Pipinos, and Jason M. Johanning

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Temporal Structure of Support Surface Translations Drive the Temporal Structure of Postural Control During Standing, Troy J. Rand, Sara A. Myers, Anastasia Kyvelidou, and Mukul Mukherjee

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How to Sync to the Beat of a Persistent Fractal Metronome without Falling Off the Treadmill?, Melvyn Roerdink, Andreas Daffertshofer, Vivien Marmelat, and Peter J. Beek

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Lower Extremity Kinematics During a Drop Jump in Individuals With Patellar Tendinopathy, Adam B. Rosen, Jupil Ko, Kathy J. Simpson, Seock-Ho Kim, and Cathleen N. Brown

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A neuromechanics-based powered ankle exoskeleton to assist walking post-stroke: a feasibility study, Kota Z. Takahashi, Michael D. Lewek, and Gregory S. Sawicki

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Gait mechanics in patients with chronic obstructive pulmonary disease, Jenna M. Yentes, Kendra K. Schmid, Daniel Blanke, Debra J. Romberger, Stephen I. Rennard, and Nicholas Stergiou

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Six degree-of-freedom analysis of hip, knee, ankle and foot provides updated understanding of biomechanical work during human walking, Karl E. Zelik, Kota Z. Takahashi, and Gregory S. Sawicki

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Cyborg beast: a low-cost 3d-printed prosthetic hand for children with upper-limb differences, Jorge Zuniga, Dimitrios Kastavelis, Jean Peck, John Stollberg, Marc Petrykowski, Adam Carson, and Cristina Fernandez

Submissions from 2014

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Locomotor Sensory Organization Test: A Novel Paradigm for the Assessment of Sensory Contributions in Gait, Jung Hung Chien, Diderik Jan Anthony Eikema, Mukul Mukherjee, and Nicholas Stergiou

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Sitting and Looking: The Development of Stability and Visual Exploration, Regina T. Harbourne, Bridget O. Ryalls, and Nicholas Stergiou

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Gaze and posture coordinate differently with the complexity of visual stimulus motion, Joshua L. Haworth, Srikant Vallabhajosula, and Nicholas Stergiou

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The influence of auditory-motor coupling on fractal dynamics in human gait, Nathaniel Hunt, Denise McGrath, and Nicholas Stergiou

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Mechanomyographic Parameter Extraction Methods: An Appraisal for Clinical Applications, Morufu Olusola Ibitoye, Nur Azah Hamzaid, Jorge M. Zuniga, Nazirah Hasnan, and Ahmad Khairi Abdul Wahab

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Changes in Predicted Muscle Coordination with Subject-Specific Muscle Parameters for Individuals after Stroke, Brian A. Knarr, Darcy S. Reiman, Stuart A. Binder-Macleod, and Jill S. Higginson

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Persistent Fluctuations in Stride Intervals under Fractal Auditory Stimulation, Vivien Marmelat, Kjerstin Torre, Peter J. Beek, and Andreas Daffertshofer

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Adaptation and Prosthesis Effects on Stride-to-Stride Fluctuations in Amputee Gait, Shane R. Wurdeman, Sara A. Myers, Adam L. Jacobsen, and Nicholas Stergiou

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Amputation effects on the underlying complexity within transtibial amputee ankle motion, Shane R. Wurdeman, Sara A. Myers, and Nicholas Stergiou

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Lower extremity injury in female basketball players is related to a large difference in peak eversion torque between barefoot and shod conditions, Jenna M. Yentes, Max J. Kurz, and Nicholas Stergiou

Submissions from 2013

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Motor control of the lower extremity musculature in children with cerebral palsy, David J. Arpin, Wayne A. Stuberg, Nick Stergiou, and Max J. Kurz

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Lower Extremity Kinematics During Walking and Elliptical Training in Individuals With and Without Traumatic Brain Injury, Thad Buster, Judith Burnfield, Adam P. Taylor, and Nicholas Stergiou

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Enhancing Fundamental Robot-Assisted Surgical Proficiency by Using a Portable Virtual Simulator, Jung Hung Chien, I. H. Suh, Shi-Huyn Park, Mukul Mukherjee, D. Oleynikov, and Ka-Chun Siu

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Executive function orchestrates regulation of task-relevant gait fluctuations, Leslie M. Decker, Fabien Cignetti, and Nicholas Stergiou

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Degeneracy and long-range correlations, D. Delignières and Vivien Marmelat

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Early Complexity Supports Development of Motor Behaviors in the First Months of Life, Stacey C. Dusing, Leroy R. Thacker, Nicholas Stergiou, and James C. Galloway

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Center of pressure and the projection of the time-course of sitting skill acquisition, Joshua L. Haworth, Regina T. Harbourne, Srikant Vallabhajosula, and Nicholas Stergiou

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Gait Mechanics are Different between Healthy Controls and Patients with Multiple Sclerosis, Jessie M. Huisinga, Kendra K. Schmid, Mary Filipi, and Nicholas Stergiou

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Gait variablility is altered in older adults when listening to auditory stimuli with differing temporal structures, Jeffrey P. Kaipust, Denise McGrath, Mukul Mukherjee, and Nicholas Stergiou

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Changes in the activation and function of the ankle plantar flexor muscles due to gait retraining in chronic stroke survivors, Brian A. Knarr, Trisha M. Kesar, Darcy S. Reiman, and Stuart A. Binder-Macleod

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Sitting Postural Control in Infants With Typical Development, Motor Delay, or Cerebral Palsy, Anastasia Kyvelidou, Regina T. Harbourne, Sandra L. Willett, and Nicholas Stergiou

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New Perspectives in Human Movement Variability, Thurmon Lockhart and Nicholas Stergiou

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A Simple Exoskeleton That Assists Plantarflexion Can Reduce the Metabolic Cost of Human Walking, Philippe Malcolm, Wim Derave, Samuel Galle, and Dirk De Clercq

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Psychosocial and cognitive function in children with nephrotic syndrome: association with disease and treatment variables, Panagiota Manti, George Giannakopoulos, Elena Giouroukou, Helen Georgaki-Angelaki, Constantinos J. Stefanidis, Andromahi Mitsioni, Nikolaos Stergiou, Constantinos Mihas, George P. Chrousos, Maria Alexandra Magiakou, and Gerasimos Kolaitis

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Stroke Survivors Control the Temporal Structure of Variability During Reaching in Dynamic Environments, Mukul Mukherjee, Panagiotis Koutakis, K.-C. Siu, Pierre B. Fayad, and Nicholas Stergiou

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Vascular Occlusion Affects Gait Variability Patterns of Healthy Younger and Older Individuals, Sara A. Myers, Jason Johanning, Iraklis Pipinos, Kendra K. Schmid, and Nicholas Stergiou

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Temporal structure of variability decreases in upper extremity movements post stroke, Amit Sethi, Tara Patterson, Theresa McGuirk, Carolynn Patten, Lorie G. Richards, and Nicholas Stergiou

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A Perspective on Human Movement Variability With Applications in Infancy Motor Development, Nicholas Stergiou, Yawen Yu, and Anastasia Kyvelidou

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Skills Learning in Robot-Assisted Surgery Is Benefited by Task-Specific Augmented Feedback, Srikant Vallabhajosula, Srikant Vallabhajosula, Timothy N. Judkins, Mukul Mukherjee, I. H. Suh, D. Oleynikov, and K.-C. Siu

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Multiple Sclerosis Alters the Mechanical Work Performed on the Body's Center of Mass During Gait, Shane R. Wurdeman, Jessie M. Huisinga, Mary Filipi, and Nicholas Stergiou

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Prosthesis preference is related to stride-to-stride fluctuations at the prosthetic ankle, Shane R. Wurdeman, Sara A. Myers, Adam L. Jacobsen, and Nicholas Stergiou

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Transtibial Amputee Joint Motion has Increased Attractor Divergence During Walking Compared to Non-Amputee Gait, Shane R. Wurdeman, Sara A. Myers, and Nicholas Stergiou

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Temporal structure of variability reveals similar control mechanisms during lateral stepping and forward walking, Shane R. Wurdeman and Nicholas Stergiou

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The Effect of a Short Duration, High Intensity Exercise Intervention on Gait Biomechanics in Patients With COPD: Findings From a Pilot Study, Jenna M. Yentes, Daniel Blanke, Stephen I. Rennard, and Nicholas Stergiou

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The Appropriate Use of Approximate Entropy and Sample Entropy with Short Data Sets, Jenna M. Yentes, Nathaniel Hunt, Kendra K. Schmid, Jeffrey P. Kaipust, Denise McGrath, and Nicholas Stergiou

Submissions from 2012

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Estimates of Critical Power and Anaerobic Work Capacity from a Single, All-Out Test of Less than 3-Min, H C. Bergstrom, T J. Housh, Jorge M. Zuniga, C L. Camic, D A. Traylor, R W. Lewis, R J. Schmidt, and G O. Johnson

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Sensitivity of the Wolf’s and Rosenstein’s Algorithms to Evaluate Local Dynamic Stability from Small Gait Data Sets: Response to Commentaries by Bruijn et al., Fabien Cignetti, Leslie M. Decker, and Nicholas Stergiou

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Sensitivity of the Wolf’s and Rostein’s Algorithms to Evaluate Local Dynamic Stability from Small Gait Data Sets, Fabien Cignetti, Leslie M. Decker, and Nicholas Stergiou

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Use of Motor Abundance in Young and Older Adults during Dual-Task Treadmill Walking, Leslie M. Decker, Fabien Cignetti, Jane F. Potter, Stephanie A. Studenski, and Nicholas Stergiou

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Wearing a safety harness during treadmill walking influences lower extremity kinematics mainly through changes in ankle regularity and local stability, Leslie M. Decker, Fabien Cignetti, and Nicholas Stergiou

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Supervised Resistance Training Results in Changes in Postural Control in Patients With Multiple Sclerosis, Jessie M. Huisinga, Mary Filipi, and Nicholas Stergiou

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Persons With Multiple Sclerosis Show Altered Joint Kinetics During Walking After Participating in Elliptical Exercise, Jessie M. Huisinga, Kendra K. Schmid, Mary Filipi, and Nicholas Stergiou

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Postural control strategy during standing is altered in patients with multiple sclerosis, Jessie M. Huisinga, Jenna M. Yentes, Mary Filipi, and Nicholas Stergiou

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Gait Variability Measures Reveal Differences between Multiple Sclerosis Patients and Healthy Controls, Jeffrey P. Kaipust, Jessie M. Huisinga, Mary Filipi, and Nicholas Stergiou

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Path Integration: Effect of Curved Path Complexity and Sensory System on Blindfolded Walking, Panagiotis Koutakis, Mukul Mukherjee, Srikant Vallabhajosula, David J. Blanke, and Nicholas Stergiou

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Relative roughness: an index for testing the suitability of the monofractal model, Vivien Marmelat, Kjerstin Torre, and Didier Delignières

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Taking balance measurement out of the laboratory and into the home: discriminatory capability of novel centre of pressure measurement in fallers and non-fallers, Denise McGrath, Emer P. Doheny, Lorcan Walsh, David McKeown, Clodagh Cunningham, Lisa Crosby, Rose Anne Kenny, Nicholas Stergiou, Brian Caulfield, and Barry R. Greene

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Peripheral Arterial Disease Affects the Frequency Response of Ground Reaction Forces During Walking, Denise McGrath, Timothy N. Judkins, Iraklis Pipinos, and Jason Johanning

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Hamstring-Dominant Strategy of the Bone–Patellar Tendon–Bone Graft Anterior Cruciate Ligament–Reconstructed Leg Versus Quadriceps-Dominant Strategy of the Contralateral Intact Leg During High-Intensity Exercise in Male Athletes, Kostas Patras, Franceska Zampeli, Stavros Ristanis, Elias Tsepis, Giorgos Ziogas, Nicholas Stergiou, and Anastasios D. Georgoulis

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Do lower-extremity joint dynamics change when stair negotiation is initiated with a self-selected comfortable gait speed?, Srikant Vallabhajosula, Jenna M. Yentes, Mira Momcilovic, Daniel Blanke, and Nicholas Stergiou

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Frontal joint dynamics when initiating stair ascent from a walk versus a stand, Srikant Vallabhajosula, Jenna M. Yentes, and Nicholas Stergiou

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Variability of Gait is Dependent on Direction of Progression: Implications for Active Control, Shane R. Wurdeman and Neil B. Huben

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Patients with peripheral arterial disease exhibit reduced joint powers compared to velocity-matched controls, Shane R. Wurdeman, Panagiotis Koutakis, Sara A. Myers, Jason Johanning, Iraklis Pipinos, and Nicholas Stergiou

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External work is deficient in both limbs of patients with unilateral PAD, Shane R. Wurdeman, Sara A. Myers, Jason Johanning, Iraklis Pipinos, and Nicholas Stergiou

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An unstable shoe with a rocker bottom redistributes external work, Shane R. Wurdeman, Jenna M. Yentes, Neil B. Huben, and Nicholas Stergiou

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Pharmacological Treatment of Intermittent Claudication Does Not Have a Significant Effect on Gait Impairments During Claudication Pain, Jenna M. Yentes, Jessie M. Huisinga, Sara A. Myers, Iraklis Pipinos, Jason Johanning, and Nicholas Stergiou

Submissions from 2011

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Anterior-posterior and medial-lateral control of sway in infants during sitting acquisition does not become adult-like, Fabien Cignetti, Anastasia Kyvelidou, Regina T. Harbourne, and Nicholas Stergiou

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New insights into anterior cruciate ligament deficiency and reconstruction through the assessment of knee kinematic variability in terms of nonlinear dynamics, Leslie M. Decker, Constantina O. Moraiti, Nicholas Stergiou, and Anastasios D. Georgoulis

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Approximate entropy used to assess sitting postural sway of infants with developmental delay, Joan E. Deffeyes, Regina T. Harbourne, Wayne A. Stuberg, and Nicholas Stergiou

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Sensory Information Utilization and Time Delays Characterize Motor Developmental Pathology in Infant Sitting Postural Control, Joan E. Deffeyes, Regina T. Harbourne, Wayne A. Stuberg, and Nicholas Stergiou

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Knee braces can decrease tibial rotation during pivoting that occurs in high demanding activities, Dimitrios Giotis, Vasilios Tsiaras, Stavros Ristanis, Franceska Zampeli, Grigoris Mitsionis, Nicholas Stergiou, and Anastasios D. Georgoulis

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Is There a Relationship Between Fatigue Questionnaires and Gait Mechanics in Persons With Multiple Sclerosis?, Jessie M. Huisinga, Mary Filipi, Kendra K. Schmid, and Nicholas Stergiou

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Elliptical exercise improves fatigue ratings and quality of life in patients with multiple sclerosis, Jessie M. Huisinga, Mary Filipi, and Nicholas Stergiou

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Complexity, Coordination, and Health: Avoiding Pitfalls and Erroneous Interpretations in Fractal Analyses, Vivien Marmelat and Didier Delignières

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The Influence of Visual Perception of Self-Motion on Locomotor Adaptation to Unilateral Limb Loading, Mukul Mukherjee, K.-C. Siu, Dimitrios Kastavelis, Pierre B. Fayad, and Nicholas Stergiou