Publications
2022
RJ Downey, DP Ferris (2022). The iCanClean Algorithm: How to remove artifacts using reference noise recordings. arXiv preprint arXiv:2201.11798
RJ Downey, N Richer, R Gupta, C Lie, EM Pliner, A Roy, J Hwang, DJ Clark, CJ Hass, TM Manini, RD Seidler, DP Ferris (2022). Uneven terrain treadmill walking in younger and older adults. bioRxiv 2022.03.01.482507
2021
P De Sanctis, T Solis-Escalante, M Seeber, J Waner, DP Ferris, K Gramann (2021). Time to move: Brain dynamics underlying natural action and cognition. Eur J Neurosci 54:8075–8080
SM Peterson, DP Ferris (2021). Human electrocortical, electromyographical, ocular, and kinematic data during perturbed walking and standing. Data in Brief 39:107635
MK MacLean, DP Ferris (2021). Human muscle activity and lower limb biomechanics of overground walking at varying levels of simulated reduced gravity and gait speeds. PloS one 16(7):e0253467
A Fleming, N Stafford, S Huang, X Hu, DP Ferris, HH Huang (2021). Myoelectric control of robotic lower limb prostheses: a review of electromyography interfaces, control paradigms, challenges and future directions. Journal of Neural Engineering 18:041004
BR Schlink, AD Nordin, CN Brooks, DP Ferris (2021). Fatigue induces altered spatial myoelectric activation patterns in the medial gastrocnemius during locomotion. Journal of Neurophysiology 125(5):2013-2023
2020
BR Schlink, AD Nordin, DP Ferris (2020). Human myoelectric spatial patterns differ among lower limb muscles and locomotion speeds. Physiological Reports 8(23):e14652
MK Maclean, DP Ferris (2020). Design and validation of a low-cost bodyweight support system for overground walking. journal of medical devices 14(4):045001
dp ferris, k mcarthur (2020). Special issue on wearble robotics and assistive technology. ieee transactions on neural systems and rehabilitation engineering 28(9):1888-1889
NE Stafford, L Wouterse, S van der helm, DP ferris (2020). proportional myoelectric control of a bionic lower limb prosthesis with series elastic actuator. american society of biomechanics annual conference
DP Ferris, K Mcarthur (2020). TNSRE Is Flipping to full open access. ieee transactions on neural systems and rehabilitation engineering 28(7):1510
N Richer, RJ Downey, WD Hairston, DP Ferris, AD Nordin (2020). Motion and Muscle Artifact Removal Validation using an electrical head phantom, robotic motion platform, and dual layer mobile eeg. IEEE transactions on Neural systems and rehabilitation engineering 28(8):1825-1835
BR Schlink, AD Nordin, DP Ferris (2020). Comparison of Signal Processing Methods for Reducing Motion Artifacts in High-Density Electromyography During Human Locomotion. IEEE Open Journal of Engineering in Medicine and Biology 1:156-165
DJ Clark, TM Manini, DP Ferris, CJ Hass, BA Brumback, Y Cruz-Almeida, M Pahor, PA Reuter-Lorenz, & RD Seidler (2020). Corrigendum: Multimodal imaging of brain activity to investigate walking and mobility decline in older adults (mind in motion study): Hypothesis, theory, and methods. Frontiers in Aging Neuroscience, 11:358.
DJ Clark, TM Manini, DP Ferris, CJ Hass, BA Brumback, Y Cruz-Almeida, M Pahor, PA Reuter-Lorenz, & RD Seidler (2020). Multimodal imaging of brain activity to investigate walking and mobility decline in older adults (mind in motion study): Hypothesis, theory, and methods. Frontiers in Aging Neuroscience, 11:358.
A Voloshina, CD Remy, D Ferris, A Kuo (2020) A model-based analysis of the mechanical cost of walking on uneven terrain. bioRxiv
2019
Schlink BR, Ferris DP (2019) A lower limb phantom for simulation and assessment of electromyography technology. IEEE Transactions of Neural Systems and Rehabilitation Engineering, 27(12), 2378-2385.
Nordin AD, Hairston WD, Ferris DP (2019) Faster gait speed suppress human auditory electrocortical responses. IEEE International Conference on Systems, Man and Cybernetics, 235-240.
MacLean MK, Ferris DP (2019) Energetics of walking with a robotic knee exoskeleton. Journal of applied biomechanics, 35(5), 320-326.
Peterson SM, Ferris DP (2019) Group-level cortical and muscular connectivity during perturbations to walking and standing balance. NeuroImage, 198, 93-103.
Bradford JC, Lukos JR, Passaro A, Ries A, Ferris DP (2019) Effect of locomotor demands on cognitive processing. Scientific Reports, 9(1), 1-12.
Nordin AD, Hairston WD, Ferris DP (2019) Faster gait speeds reduce alpha and beta EEG spectral power from human sensorimotor cortex. IEEE Transactions on Biomedical Engineering.
Richer N, Downey RJ, Nordin AD, Hairston WD, Ferris DP (2019) Adding neck muscle activity to a head phantom device to validate mobile EEG muscle and motion artifact removal. 2019 9th International IEEE/EMBS Conference on Neural Engineering, 275-278.
Nordin AD, Harriston WD, Ferris DP (2019) Human electrocortical dynamics while stepping over obstacles. Scientific Reports, 9(1), 1-12.
Ingraham KA, Ferris DP, Remy CD (2019) Evaluating physiological signal salience for estimating metabolic energy cost from wearable sensors. Journal of Applied Physiology, 126(3), 717-729.
Calrk DJ, Manini TM, Ferris DP, Hass CJ, Brumback BA, Cruz-Almeida Y, Pahor M, Reuter-Lorenz PA, Seidler RD (2019) Multimodal imaging of brain activity to investigate walking and mobility decline in older adults (mind in motion study): Hypothesis, Theory, and Methods. Frontiers of Aging Neuroscience, 11.
Symeonidou ER, Ferris DP (2019) Training with brief visual occlusions improves balance control in treadmill beam walking. 9th International symposium of adaptive motion on animal and machines (AMAM 2019).
MacLean MK, Ferris DP (2019) Lower limb muscle activity in humans walking overground at simulated reduced gravity levels. 9th International symposium of adaptive motion on animal and machines (AMAM 2019).
Ferris DP, Schlink BR, Young AJ (2019) Robotics: Exoskeletons, Encyclopedia of Biomedical Engineering, 645-651.
2018
Peterson SM, Ferris DP (2018) Combined head phantom and neural mass model validation of effective connectivity measures. Journal of Neural Engineering.
Koller JR, Remy CD, Ferris DP (2018) Biomechanics and energetics of walking in powered ankle exoskeleton using myoelectric control versus mechanically intrinsic control. Journal of Neuroengineering and Rehabilitation, 15(1), 42.
Jacobs DA, Koller JR, Steele KM, Ferris DP (2018) Motor modules during adaptation to walking in a powered ankle exoskeleton. Journal of neuroengineering and rehabilitation, 15(1), 2.
Peterson S, Rios E, Ferris DP (2018) Transient visual perturbations boost short-term balance learning in virtual reality by modulating electrocortical activity. Journal of Neurophysiology, 120(4), 1998-2010.
Nordin AD, Hairston WD, Ferris DP (2018) Dual-electrode motion artifact cancellation for mobile electroencephalography. Journal of Neural Engineering, 15(5):056024.
Peterson S, Ferris DP (2018) Differentiation in theta and beta electrocortical activity between visual and physical perturbations to walking and standing balance. eNeuro, 5(4) ENEURO.0207-18.2018.
Peterson S, Furuichi E, Ferris DP (2018) Effects of virtual reality high heights exposure during beam-walking on physiological stress and cognitive loading. PLoS One, 13(7):e0200306.
Symeonidou E, Nordin AD, Hairston WD, Ferris DP (2018) Effects of cable sway, electrode surface area, and electrode mass on EEG signal quality during motion. Sensors, 18:1073.
Jacobs DA, Koller JR, Steele KM, and Ferris DP (2018) Motor modules during adaptation to walking in a powered ankle exoskeleton. Journal of Neuroengineering and Rehabilitation, 15:2.
Koller JR, Remy CD, Ferris DP (2018) Biomechanics and energetics of walking in powered ankle exoskeletons using myoelectric control versus mechanically intrinsic control. Journal of Neuroengineering and Rehabilitation, 15:42.
Voloshina A and Ferris DP (2018) Design and validation of an instrumented uneven terrain treadmill. Journal of Applied Biomechanics, 34:236-239.
2017
Young AJ, Ferris DP (2017) State of the art and future directions for lower limb robotic exoskeletons. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 25: 171-182.
Oliveira AS, Schlink B, Hairston WD, Konig P, and Ferris DP (2017) Restricted vision increases sensorimotor cortex involvement in human walking. Journal of Neurophysiology, in press.
Young AJ, Gannon .H, and Ferris DP (2017) A biomechanical comparison of proportional electromyography control to biological torque control using a powered hip exoskeleton. Frontiers in Bioengineering and Biotechnology, 5:37.
Schlink BR, Peterson SM, Hairston WD, Konig P, Kerick SE, and Ferris DP (2017) Independent component analysis and source localization on mobile EEG data can identify increased levels of acute stress. Frontiers in Human Neuroscience, 11:310.
Melnik A, Hairston WD, Ferris DP, and Konig P (2017) EEG correlates of sensorimotor processing: independent components involved in sensory and motor processing. Scientific Reports, 7:4461
Oliveira AS, Schlink B, Hairston WD, Konig P, and Ferris DP (2017) A channel rejection method for attenuating motion-related artefacts in EEG recordings during cyclical head motion. Frontiers in Neuroscience, 11:225.
Melnik A, Legkov P, Izdebski K, Kärcher S, Hairston WD, Ferris DP, and Konig P (2017) Subjects, systems, sessions: to what extent do these factors influence EEG data? Frontiers in Human Neuroscience, 11:150.
Ferris DP and Schlink B (2017) Robotic devices to enhance human performance. Kinesiology Review, 6:70-77. Young A and Ferris DP (2017) State-of-the-art and future directions for robotic lower limb exoskeletons. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 25:171-182.
Koller J, Gates D, Ferris DP, and Remy CD (2017) Confidence in the curve: establishing instantaneous cost mapping techniques using bilateral ankle exoskeletons. Journal of Applied Physiology, 122:242-252.
Wahn B, Ferris DP, Hairston WD, and Konig P (2017) Pupil sizes scale with attentional load and 4 of 29 task experience in a multiple object tracking task. PLoS One, 11(12): e0168087.
Young AJ, Foss J, Gannon H, and Ferris DP (2017) Influence of power delivery timing on the energetics and biomechanics of humans wearing a hip exoskeleton. Frontiers in Bioengineering and Biotechnology, 5:4.
2016
Cherry MS, Kota S, Young A, and Ferris DP (2016) Running with an elastic lower limb exoskeleton. Journal of Applied Biomechanics, 32:269-77.
Oliveira A, Schlink B, Hairston D, Konig P, and Ferris DP (2016) Proposing metrics for benchmarking novel EEG technologies towards real-world measurements. Frontiers in Human Neuroscience, 10:188.
Oliveira A, Schlink B, Hairston D, Konig P, and Ferris DP (2016) Induction and separation of motion artifacts in EEG data using a mobile phantom head device. Journal of Neural Engineering,13(3):036014.
Huang S, Wensman JP, and Ferris DP (2016) Locomotor adaptation by transtibial amputees walking with an experimental powered prosthesis under continuous myoelectric control. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 24:573-581.
Jacobs D and Ferris DP (2016) Evaluation of a low-cost pneumatic plantar pressure insole for predicting ground contact kinetics. Journal of Applied Biomechanics, 32:215-20.
Kline JE, Huang HJ, Snyder KL, and Ferris DP (2016) Cortical spectral activity and connectivity during active and viewed arm and leg movement. Frontiers in Neuroscience,10:91.
Bradford JC, Lukas J, and Ferris DP (2016) Electrocortical activity distinguishes between uphill and level walking in humans. Journal of Neurophysiology, 115:958-966.
2015
Snyder KL, Kline JE, Huang HJ, and Ferris DP (2015) Independent component analysis of gaitrelated movement artifact recorded using EEG electrodes during treadmill walking. Frontiers in Human Neuroscience, 9:639.
Koller JR, Jacobs DA, Ferris DP, and Remy CD (2015) Adaptive gain for proportional myoelectric control of a robotic ankle exoskeleton. Journal of Neuroengineering and Rehabilitation, 12:97.
Jacobs D and Ferris DP (2015) Estimation of ground contact forces and ankle moment in multiple human locomotion tasks. Journal of Neuroengineering and Rehabilitation, 12:90.
Kline JE, Huang HJ, Snyder KL, and Ferris DP (2015) Isolating gait-related movement artifacts in electroencephalography during human walking. Journal of Neural Engineering, 12(4):046022.
Voloshina A and Ferris DP (2015) Biomechanics and energetics of running on uneven terrain. Journal of Experimental Biology, 218:711-9.
2014
Gramann K, Jung T, Ferris DP, Lin C, Makeig S (2014) Towards a new cognitive neuroscience: Modeling natural brain dynamics. Frontiers in Human Neuroscience, 8:444.
Kline JE, Poggensee K, and Ferris DP (2014) Your brain on speed: cognitive performance of a spatial working memory task is not affected by walking speed. Frontiers in Human Neuroscience, 8:288.
Huang S, Wensman JP and Ferris DP (2014) An experimental powered lower limb prosthesis using proportional myoelectric control. ASME Journal of Medical Devices, 8:024501.
Lau TM, Gwin JT and Ferris DP (2014) Walking reduces electrocortical sensorimotor network connectivity compared to standing. Journal of Neuroengineering and Rehabilitation, 11:14.
Gramann K, Ferris DP, Gwin JT, and Makeig S (2014) Imaging natural cognition in action. International Journal of Psychophysiology, 91:22-29.
2013
Sipp A, Gwin JT, Makeig S and Ferris DP (2013) Loss of balance during balance-beam walking elicits a broadly distributed theta-band electrocortical response. Journal of Neurophysiology, 110: 2050-2060.
Voloshina A, Kuo AD, Daley MA, and Ferris DP (2013) Biomechanics and energetics of walking on uneven terrain. Journal of Experimental Biology, 216: 3963-3970.
Alcaide-Aguirre RE, Morgenroth DC, and Ferris DP (2013) Motor performance and learning with lower extremity myoelectric control in amputees. Journal of Rehabilitation Research and Development, 50: 687–698.
Gordon KE, Kinnaird C and Ferris DP (2013) Locomotor adaptation to soleus EMG-controlled antagonistic exoskeleton. Journal of Neurophysiology, 109:1804-1814.
2012
Gwin JT and Ferris DP (2012) Beta- and gamma-range human lower limb corticomuscular 5 of 29 coherence. Frontiers in Human Neuroscience, 6:258.
Lau TM, Gwin JT and Ferris DP (2012) How many electrodes are really needed for EEG-based mobile brain imaging? Journal of Behavioral and Brain Science, 2:387-393.
Huang S and Ferris DP (2012) Muscle activation patterns during walking from transtibial amputees recorded within the residual limb-prosthetic interface. Journal of Neuroengineering and Rehabilitation, 9:55.
Lau TM, Gwin JT, McDowell K and Ferris DP (2012) Weighted phase lag index stability as an artifact resistant measure to detect cognitive EEG activity during locomotion. Journal of Neuroengineering and Rehabilitation, 9:47.
Gwin JT and Ferris DP (2012) An EEG-based study of discrete isometric and isotonic human lower limb muscle contractions. Journal of Neuroengineering and Rehabilitation, 9:35.
2011
Gramann K, Gwin JT, Ferris DP, Oie K, Jung TP, Lin CT, Liao LD and Makeig S (2011) Cognition in action: imaging brain/body dynamics in mobile humans. Reviews in the Neurosciences, 22:593-608.
Lewis CL and Ferris DP (2011) Invariant hip moment patterns when walking with a robotic hip exoskeleton. Journal of Biomechanics, 44:789-793.
Gwin J, Gramann K, Makeig S and Ferris DP (2011) Electrocortical activity is coupled to gait cycle phase during treadmill walking. Neuroimage, 54:1289-1296.
2010
Huang HJ and Ferris DP (2010) Neural mechanisms for upper and lower limb neural coupling. Journal of Neuroengineering and Rehabilitation, 7:59.
Gramann K, Gwin J, Bigdely-Shamlo N, Ferris DP and Makeig S (2010) Visual evoked responses during standing and walking. Frontiers in Human Neuroscience, 4:202.
Domingo A and Ferris DP (2010) The effects of error augmentation on learning to walk on a narrow balance beam. Experimental Brain Research, 206:359-370.
Kao PC, Lewis CL and Ferris DP (2010) Short-term locomotor adaptation to a robotic ankle exoskeleton does not alter soleus Hoffmann reflex amplitude. Journal of Neuroengineering and Rehabilitation, 7:33.
Gwin JT, Gramann K, Makeig S and Ferris DP (2010) Removal of movement artifact from highdensity EEG recorded during walking and running. Journal of Neurophysiology, 103:3526-3534.
Kao PC, Lewis CL and Ferris DP (2010) Joint kinetic response during unexpectedly reduced plantar flexor torque provided by a robotic ankle exoskeleton during walking. Journal of Biomechanics, 43:1401-1407.
Kao PC, Lewis CL and Ferris DP (2010) Invariant ankle moment patterns when walking with and without a robotic ankle exoskeleton. Journal of Biomechanics, 43:203-209.
2009
Domingo A and Ferris DP (2009) Effects of physical assistance on learning balance during narrow beam walking. Gait and Posture, 30:464-468.
Simon AM, Kelly BM and Ferris DP (2009) Sense of effort determines lower limb force production during dynamic movement in individuals with post-stroke hemiparesis. Neurorehabilitation and Neural Repair, 23:811-818.
Huang HJ and Ferris DP (2009) Upper limb effort does not increase maximal voluntary muscle activation in individuals with incomplete spinal cord injury. Clinical Neurophysiology, 120:1741-1749.
Huang HJ and Ferris DP (2009) Excitatory neural coupling between upper and lower limbs is bidirectional and ipsilateral. Medicine and Science in Sports and Exercise, 41:1778-1789.
Klimstra MD, Thomas E, Stoloff RH, Ferris DP and Zehr EP (2009) Neuromechanical considerations for incorporating rhythmic arm movement in the rehabilitation of walking. Chaos,19:026102.
Sawicki GS, Lewis CL and Ferris DP (2009) It pays to have a spring in your step. Exercise and Sport Sciences Reviews, 37:130-138.
Sawicki GS and Ferris DP (2009) A pneumatically powered knee-ankle-foot orthosis (KAFO) with myoelectric activation and inhibition. Journal of Neuroengineering and Rehabilitation, 6:23.
Kinnaird CR and Ferris DP (2009) Medial gastrocnemius myoelectric control of a robotic ankle exoskeleton for human walking. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 17:31-37. 6 of 29.
Kao P-C and Ferris DP (2009) Motor adaptation during dorsiflexion-assisted walking with a powered orthosis. Gait and Posture, 29:230-236.
Gordon KE, Ferris DP and Kuo AD (2009) Metabolic and mechanical energy costs of reducing vertical center of mass movement during gait. Archives of Physical Medicine and Rehabilitation, 90:136-144.
Collins SH, Adamczyk PG, Ferris DP and Kuo AD (2009) A simple method for calibrating force plates and treadmills using an instrumented pole. Gait and Posture, 29:59-64.
Sawicki GS and Ferris DP (2009) Mechanics and energetics of incline walking with robotic ankle exoskeletons. Journal of Experimental Biology, 212:32-41.
Sawicki GS and Ferris DP (2009) Powered ankle exoskeletons reveal the metabolic cost of plantarflexor mechanical work during walking with longer steps at constant step frequency. Journal of Experimental Biology, 212:21-31.
2008
Lewis CL and Ferris DP (2008) Walking with increased ankle pushoff decreases hip moments. Journal of Biomechanics, 41:2082-2089.
Sawicki GS and Ferris DP (2008) Mechanics and energetics of level walking with powered ankle exoskeletons. Journal of Experimental Biology, 211:1402-1413.
Simon AM and Ferris DP (2008) Lower limb force production and bilateral force asymmetries are based on sense of effort. Experimental Brain Research, 187:129-138.
Pelc E, Daley MA, and Ferris DP (2008) Resonant hopping of a robot controlled by an artificial neural oscillator. Bioinspiration and Biomimetics, 3(2):26001.
2007
Cain S, Gordon KE and Ferris DP (2007) Human motor adaptation during walking with a powered ankle-foot orthosis depends on control method. Journal of Neuroengineering and Rehabilitation, 4:48.
Ferris DP, Sawicki GS and Daley MA (2007) A physiologist’s perspective on robotic exoskeletons for human locomotion. International Journal of Humanoid Robotics, 4:507–528.
Domingo A, Sawicki GS and Ferris DP (2007) Kinematics and muscle activity of individuals with incomplete spinal cord injury during treadmill stepping with and without manual assistance. Journal of Neuroengineering and Rehabilitation, 4:32.
Zehr EP, Balter JE, Ferris DP, Hundza SR, Loadman P and Stoloff RH (2007) Neural control of rhythmic arm and leg movement is conserved across human locomotor tasks. Journal of Physiology, 582: 209-227.
Gordon KE and Ferris DP (2007) Learning to walk with a robotic ankle exoskeleton. Journal of Biomechanics, 40:2636-2644.
Stoloff RH, Zehr EP and Ferris DP (2007) Recumbent stepping has similar but simpler neural control compared to walking. Experimental Brain Research, 178:427-438.
Simon AM, Gillespie RB and Ferris DP (2007) Symmetry-based resistance as a novel means of lower limb rehabilitation. Journal of Biomechanics, 40:1286-1292.
2006
Ferris DP, Huang HJ and Kao P-C (2006) Moving the arms to activate the legs. Exercise and Sport Sciences Reviews, 34:113-120.
Gordon KE, Sawicki GS and Ferris DP (2006) Mechanical performance of artificial pneumatic muscles to power an ankle-foot orthosis. Journal of Biomechanics, 39:1832-1841.
Ferris DP, Gordon KE, Sawicki GS and Peethambaran A (2006) An improved powered ankle-foot orthosis using proportional myoelectric control. Gait and Posture, 23:425-428.
Sawicki GS, Domingo A and Ferris DP (2006) The effects of powered ankle foot orthoses on muscle activation and joint kinematics during walking by individuals with incomplete spinal cord injury. Journal of Neuroengineering and Rehabilitation, 3(1):3.
Ferris DP, Bohra ZA, Lukos JR and Kinnaird CR (2006) Neuromechanical adaptation to hopping with an elastic ankle-foot orthosis. Journal of Applied Physiology, 100:163-170.
2005
Ferris DP, Sawicki GS and Domingo A (2005) Powered lower limb orthoses for gait rehabilitation. Topics in Spinal Cord Injury Rehabilitation, 11:34-49.
Ferris DP, Czerniecki JM and Hannaford B (2005) An ankle-foot orthosis powered by artificial pneumatic muscles. Journal of Applied Biomechanics, 21:189-197.
Kao P-C and Ferris DP (2005) The effect of movement frequency on interlimb coupling during recumbent stepping. Motor Control, 9:144-163. 7 of 29.
2004
Gordon KE and Ferris DP (2004) Proportional myoelectric control of a virtual object to investigate human efferent control. Experimental Brain Research, 159:478-486.
Huang HJ and Ferris DP (2004) Neural coupling between upper and lower limbs during recumbent stepping. Journal of Applied Physiology, 97:1299-1308.
Ferris DP, Gordon KE, Beres JA and Harkema SH (2004) Muscle activation during unilateral stepping occurs in the nonstepping limb of humans with clinically complete spinal cord injury. Spinal Cord, 42:14-23.
2001
Ferris DP, Aagaard P, Simonsen EB, Farley CT, and Dyhre-Poulsen P (2001) Soleus H-reflex gain in humans walking and running under simulated reduced gravity. Journal of Physiology, 530:167-180.
1999
Ferris DP, Liang K and Farley CT (1999) Runners adjust leg stiffness for their first step on a new running surface. Journal of Biomechanics, 32:787-794.
1998
Ferris DP, Louie M and Farley CT (1998) Running in the real world: adjusting leg stiffness for different surfaces. Proceedings of the Royal Society of London: Biological Sciences, 265:989-994.
Farley CT and Ferris DP (1998) Biomechanics of walking and running: from center of mass movement to muscle action. Exercise and Sport Sciences Reviews, 26:253-285.
1997
Ferris DP and Farley CT (1997) Interaction of leg stiffness and surface stiffness during human hopping. Journal of Applied Physiology, 82:15-22.
Kram R, Domingo A and Ferris DP (1997) Effect of reduced gravity on the preferred walk-run transition speed. Journal of Experimental Biology, 200:821-826.
1995
Ferris DP, Signorile JF and Caruso JF (1995) The relationship between physical and physiological variables and volleyball spiking velocity. Journal of Strength and Conditioning Research, 9:32-36.