Neptune, Richard Ray

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AcademicTree: 616267

Academic genealogy

Doctoral Descendants

Affiliations (3)

Name	Count	Oldest	Newest
University of Calgary	3	1998	2000
University of Texas at Austin	14	2002	2025
University of California, Davis	3	1993	1997

Papers (19)

Year	Article	Times Cited	Times Cited (no self-citations)
2000	Neptune RR, Wright IC, van den Bogert AJ. A method for numerical simulation of single limb ground contact events: application to heel-toe running. Comput Methods Biomech Biomed Eng. 2000;3(4):321-334.	37	17
2002	Zajac FE, Neptune RR, Kautz SA. Biomechanics and muscle coordination of human walking, I: introduction to concepts, power transfer, dynamics and simulations. Gait Post. December 2002;16(3):215-232.	65	52
2003	Zajac FE, Neptune RR, Kautz SA. Biomechanics and muscle coordination of human walking, II: lessons from dynamical simulations and clinical implications. Gait Post. February 2003;17(1):1-17.	59	44
2004	Neptune RR, Zajac FE, Kautz SA. Muscle force redistributes segmental power for body progression during walking. Gait Post. April 2004;19(2):194-205.	61	39
2008	Neptune RR, Sasaki K, Kautz SA. The effect of walking speed on muscle function and mechanical energetics. Gait Post. July 2008;28(1):135-143.	40	29
1997	Neptune RR, Kautz SA, Hull ML. The effect of pedaling rate on coordination in cycling. J Biomech. October 1997;30(10):1051-1058.	13	8
2001	Neptune RR, Kautz SA, Zajac FE. Contributions of the individual ankle plantar flexors to support, forward progression and swing initiation during walking. J Biomech. November 2001;34(11):1387-1398.	123	90
2006	Higginson JS, Zajac FE, Neptune RR, Kautz SA, Delp SL. Muscle contributions to support during gait in an individual with post-stroke hemiparesis. J Biomech. 2006;39(10):1769-1777.	24	10
2009	Neptune RR, Clark DJ, Kautz SA. Modular control of human walking: a simulation study. J Biomech. June 19, 2009;42(9):1282-1287.	27	21
2010	Peterson CL, Hall AL, Kautz SA, Neptune RR. Pre-swing deficits in forward propulsion, swing initiation and power generation by individual muscles during hemiparetic walking. J Biomech. August 26, 2010;43(12):2348.	21	10
2011	Neptune RR, McGowan CP. Muscle contributions to whole-body sagittal plane angular momentum during walking. J Biomech. January 4, 2011;44(1):6-12.	16	12
2012	Silverman AK, Neptune RR. Muscle and prosthesis contributions to amputee walking mechanics: a modeling study. J Biomech. August 31, 2012;45(13):2271-2278.	20	8
2016	Vistamehr A, Kautz SA, Bowden MG, Neptune RR. Correlations between measures of dynamic balance in individuals with post-stroke hemiparesis. J Biomech. February 8, 2016;49(3):396-400.	12	6
2023	Cyr KM, Segal AD, Neptune RR, Klute GK. Biomechanical responses of individuals with transtibial amputation stepping on a coronally uneven and unpredictable surface. J Biomech. June 2023;155:111622.	0	0
2023	Molina LK, Small GH, Neptune RR. The influence of step width on balance control and response strategies during perturbed walking in healthy young adults. J Biomech. August 2023;157:111731.	2	1
2024	Molitor SL, Neptune RR. Lower-limb joint quasi-stiffness in the frontal and sagittal planes during walking at different step widths. J Biomech. January 2024;162:111897.	0	0
2025	Roelker SA, Willson JD, DeVita P, Neptune RR. Muscle contributions to propelling the body upward differ between skipping and running. J Biomech. March 2025;181:112545.	0	0
1998	Neptune RR, Hull ML. Evaluation of performance criteria for simulation of submaximal steady-state cycling using a forward dynamic model. J Biomech Eng. June 1998;120(3):334-341.	32	21
1999	Neptune RR. Optimization algorithm performance in determining optimal controls in human movement analyses. J Biomech Eng. April 1999;121(2):249-252.	30	26

Theses (2)

Year	Article	Times Cited	Times Cited (no self-citations)
1996	Neptune RR. Analysis of Muscle Coordination and Preferred Pedaling Rates in Steady-State Cycling [PhD thesis]. Davis, University of California; 1996.	2	1
1993	Neptune RR. Accuracy Assessment of Methods Used for Determining Hip Movement in Seated Cycling [Master's thesis]. Davis, University of California; 1993.	0	0

Student Theses (34)

Year	Article	Times Cited	Times Cited (no self-citations)
2022	Walford SL. The Interactions Between Hand Pattern, Shoulder Pain and Upper Extremity Demand in Manual Wheelchair Users [PhD thesis]. University of Texas at Austin; May 2022.	0	0
2022	Hildreth S. The Effects of a Novel Orthotic Insole on Ground Reaction Forces and Ankle Mechanics: A Comparison to a Carbon Fiber Plated Running Shoe [Master's thesis]. University of Texas at Austin; May 2022.	0	0
2021	Small GH. The Influence of Cognitive Load on Balance Control During Walking [Master's thesis]. University of Texas at Austin; May 2021.	0	0
2021	Brough LG. Muscle Contributions to Balance Control, Propulsion and Leg Swing During Healthy and Post-Stroke Walking [PhD thesis]. University of Texas at Austin; December 2021.	0	0
2020	Lewallen LK. Assessment of Turning Performance and Muscle Coordination in Individuals Post-Stroke [Master's thesis]. University of Texas at Austin; May 2020.	0	0
2018	Walford SL. Predictors of Shoulder Pain in Manual Wheelchair Users [Master's thesis]. University of Texas at Austin; August 2018.	0	0
2018	Frame HB. The Influence of Lateral Stabilization on Walking Performance and Balance Control in Healthy and Post-Stroke Individuals [Master's thesis]. University of Texas at Austin; August 2018.	0	0
2018	Brough LG. Merged Plantarflexor Muscle Activity is Predictive of Poor Walking Performance in Post-Stroke Hemiparetic Subjects [Master's thesis]. University of Texas at Austin; May 2018.	0	0
2017	Womac ND. Stiffness and Energy Storage Characteristics of Energy Storage and Return Prosthetic Feet [Master's thesis]. University of Texas at Austin; August 2017.	0	0
2017	Miller SE. Balance Recovery Mechanisms Used by Below-Knee Amputees Following Mediolateral Perturbations [Master's thesis]. University of Texas at Austin; May 2017.	0	0
2016	Shell CE. Tuning Prosthetic Foot Stiffness to Improve Lower-Limb Amputee Mobility [PhD thesis]. University of Texas at Austin; May 2016.	0	0
2016	Ranz EC. Mobility in Individuals With Traumatic Lower-Limb Injuries: Implications for Device Design, Surgical Intervention and Rehabilitation Therapies [PhD thesis]. University of Texas at Austin; May 2016.	0	0
2015	Slowik JS. The Relationships Between Muscle Weakness, Wheelchair Propulsion Technique and Upper Extremity Demand [PhD thesis]. University of Texas at Austin; August 2015.	0	0
2015	Harper NG. Muscle Function and Coordination of Amputee and Non-Amputee Stair Ascent [PhD thesis]. University of Texas at Austin; August 2015.	0	0
2014	Vistamehr A. Understanding Dynamic Balance During Walking Using Whole-Body Angular Momentum [Master's thesis]. University of Texas at Austin; August 2014.	1	1
2014	Routson RL. An Analysis of Modular Patterns in Healthy and Post-Stroke Hemiparetic Gait [PhD thesis]. University of Texas at Austin; August 2014.	0	0
2012	Slowik JS. A Theoretical Analysis of the Influence of Wheelchair Seat Position on Upper Extremity Demand [Master's thesis]. University of Texas at Austin; August 2012.	0	0
2012	Shell CE. A Framework for Manipulating the Sagittal and Coronal Plane Stiffness of a Commercially-Available, Low Profile Carbon Fiber Foot [Master's thesis]. University of Texas at Austin; August 2012.	0	0
2012	Guckert NL. The Influence of Ankle-Foot Orthosis Stiffness on Gait Performance in Patients With Lower Limb Neuromuscular and Musculoskeletal Impairments [Master's thesis]. University of Texas at Austin; December 2012.	0	0
2012	Allen JL. Simulation and Experimental Analyses to Assess Walking Performance Post-Stroke Using Step Length Asymmetry and Module Composition [PhD thesis]. University of Texas at Austin; August 2012.	0	0
2011	Fey NP. The Influence of Prosthetic Foot Design and Walking Speed on Below-Knee Amputee Gait Mechanics [PhD thesis]. University of Texas at Austin; December 2011.	1	1
2010	Ventura JD. Experimental Analysis and Computational Simulation of Unilateral Transtibial Amputee Walking to Evaluate Prosthetic Device Design Characteristics and Amputee Gait Mechanics [PhD thesis]. University of Texas at Austin; May 2010.	0	0
2010	Silverman AK. Compensatory Mechanisms in Below-Knee Amputee Walking and Their Effects on Knee Joint Loading, Metabolic Cost and Angular Momentum [PhD thesis]. University of Texas at Austin; August 2010.	0	0
2010	Rankin JW. The Influence of Altering Wheelchair Propulsion Technique on Upper Extremity Demand [PhD thesis]. University of Texas at Austin; August 2010.	0	0
2010	Peterson CL. Simulation and Experimental Analyses of Human Movement: Application to Post-Stroke Hemiparetic Gait [PhD thesis]. University of Texas at Austin; August 2010.	0	0
2010	Hall AL. Understanding Changes in Post-Stroke Walking Ability Through Simulation and Experimental Analyses [PhD thesis]. University of Texas at Austin; December 2010.	0	0
2009	Allen JL. Muscle Function Following Post-Stroke Locomotor Training: A Simulation Analysis of Different Strategies to Improve Walking Speed [Master's thesis]. University of Texas at Austin; August 2009.	0	0
2007	Silverman AK. Compensatory Mechanisms in Below-Knee Amputee Gait in Response to Increasing Steady-State Walking Speeds [Master's thesis]. University of Texas at Austin; 2007.	0	0
2007	Peterson CL. Inappropriate Flexor Synergies Influence Walking Mechanics That Reduce Plantar Flexor Contributions to Propulsion in Persons With Post-Stroke Hemiparesis [Master's thesis]. University of Texas at Austin; 2007.	0	0
2007	Hall AL. Individual Plantar Flexor Compensation During Walking With a Unilateral Passive Dynamic Ankle-Foot Orthosis: A Simulation Study [Master's thesis]. University of Texas at Austin; August 2007.	0	0
2006	Turns LJ. Relationships Between Muscle Activity and Anterior-Posterior Ground Reaction Forces in Hemiparetic Walking [Master's thesis]. University of Texas at Austin; 2006.	0	0
2004	Sasaki K. Analysis of Potential Muscular Determinants of the Preferred Walk-Run Transition Speed in Human Gait [PhD thesis]. University of Texas at Austin; August 2004.	0	0
2004	Faustimi MC. Modeling and Fabrication of Prosthetic Sockets Using Selective Laser Sintering [PhD thesis]. University of Texas at Austin; May 2004.	0	0
2004	Banks JA. The Design of a Dual, Split-Belt Treadmill System for Measurement of Ground Reaction Forces During Normal and Pathological Gait [Master's thesis]. University of Texas at Austin; 2004.	0	0

Collaborators (10)

Name	Count	Oldest	Newest
Bowden, Mark Goodman	1	2016	2016
van den Bogert, Antonie J.	1	2000	2000
Delp, Scott L.	1	2006	2006
Higginson, Jill Startzell	1	2006	2006
Zajac, III, Felix Edward	5	2001	2006
Hull, Maury Lane	2	1997	1998
Silverman, Anne Katherine	1	2012	2012
Peterson, Carrie Lynn	1	2010	2010
Kautz, Steven Arthur	10	1997	2016
McGowan, Craig Patrick	1	2011	2011