Gregory Sawicki

Works (32)

2020 journal article

Impact of elastic ankle exoskeleton stiffness on neuromechanics and energetics of human walking across multiple speeds

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 17(1).

By: R. Nuckols & G. Sawicki

Source: Web Of Science
Added: July 13, 2020

2019 article

Development of a Novel Gait Analysis Tool Measuring Center of Pressure for Evaluation of Canine Chronic Thoracolumbar Spinal Cord Injury

JOURNAL OF NEUROTRAUMA.

By: M. Lewis, K. Williams, T. Langley, L. Jarvis, G. Sawicki & N. Olby

Source: Web Of Science
Added: June 24, 2019

2019 journal article

Mechanics and energetics of post-stroke walking aided by a powered ankle exoskeleton with speed-adaptive myoelectric control

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 16.

By: E. McCain, T. Dick, T. Giest, R. Nuckols, M. Lewek, K. Saul, G. Sawicki

Source: Web Of Science
Added: June 4, 2019

2017 journal article

A benchtop biorobotic platform for in vitro observation of muscle-tendon dynamics with parallel mechanical assistance from an elastic exoskeleton

Journal of Biomechanics, 57, 8–17.

By: B. Robertson, S. Vadakkeveedu & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2017 conference paper

An in vitro approach for directly observing muscle-tendon dynamics with parallel elastic mechanical assistance

Converging clinical and engineering research on neurorehabilitation ii, vols 1 and 2, 15, 643–647.

By: G. Sawicki & B. Robertson

Source: NC State University Libraries
Added: August 6, 2018

2017 journal article

Quantifying center of pressure variability in chondrodystrophoid dogs

Veterinary Journal, 226, 26–31.

By: S. Blau, L. Davis, A. Gorney, C. Dohse, K. Williams, J. Lim, W. Pfitzner, E. Laber, G. Sawicki, N. Olby

Source: NC State University Libraries
Added: August 6, 2018

2017 journal article

The springs of time-limited bullfrog jumps and slow-preparation grasshopper leaps are tuned to their muscle dynamics

Integrative and Comparative Biology, 57, E390–390.

By: M. Rosario, G. Sutton, S. Patek & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

A cyber expert system for auto-tuning powered prosthesis impedance control parameters

Annals of Biomedical Engineering, 44(5), 1613–1624.

By: H. Huang, D. Crouch, M. Liu, G. Sawicki & D. Wang

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

A simple model to estimate plantarflexor muscle-tendon mechanics and energetics during walking with elastic ankle exoskeletons

IEEE Transactions on Biomedical Engineering, 63(5), 914–923.

By: G. Sawicki & N. Khan

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Adding stiffness to the foot modulates soleus force-velocity behaviour during human walking

Scientific Reports, 6.

By: K. Takahashi, M. Gross, H. Werkhoven, S. Piazza & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Modeling age-related changes in muscle-tendon dynamics during cyclical contractions in the rat gastrocnemius

Journal of Applied Physiology, 121(4), 1004–1012.

By: N. Danos, N. Holt, G. Sawicki & E. Azizi

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Muscle-spring dynamics in time-limited, elastic movements

By: M. Rosario, G. Sutton, S. Patek & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

A neuromechanics-based powered ankle exoskeleton to assist walking post-stroke: A feasibility study

Journal of Neuroengineering and Rehabilitation, 12.

By: K. Takahashi, M. Lewek & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

Individual limb mechanical analysis of gait following stroke

Journal of Biomechanics, 48(6), 984–989.

By: C. Mahon, D. Farris, G. Sawicki & M. Lewek

Source: NC State University Libraries
Added: August 6, 2018

2015 article

More is not always better: Modeling the effects of elastic exoskeleton compliance on underlying ankle muscle-tendon dynamics (vol 9, 046018, 2014)

Bioinspiration & Biomimetics, Vol. 10.

By: B. Robertson, D. Farris & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

Power amplification in an isolated muscle-tendon unit is load dependent

Journal of Experimental Biology, 218(22), 3700–3709.

By: G. Sawicki, P. Sheppard & T. Roberts

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

Reducing the energy cost of human walking using an unpowered exoskeleton

Nature, 522(7555), 212-.

By: S. Collins, M. Wiggin & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

Revisiting the mechanics and energetics of walking in individuals with chronic hemiparesis following stroke: From individual limbs to lower limb joints

Journal of Neuroengineering and Rehabilitation, 12.

By: D. Farris, A. Hampton, M. Lewek & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

Six degree-of-freedom analysis of hip, knee, ankle and foot provides updated understanding of biomechanical work during human walking

Journal of Experimental Biology, 218(6), 876–886.

By: K. Zelik, K. Takahashi & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

Timing matters: tuning the mechanics of a muscle-tendon unit by adjusting stimulation phase during cyclic contractions

Journal of Experimental Biology, 218(19), 3150–3159.

By: G. Sawicki, B. Robertson, E. Azizi & T. Roberts

Source: NC State University Libraries
Added: August 6, 2018

2014 journal article

Exploiting elasticity: Modeling the influence of neural control on mechanics and energetics of ankle muscle-tendons during human hopping

Journal of Theoretical Biology, 353, 121–132.

By: B. Robertson & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2014 journal article

More is not always better: modeling the effects of elastic exoskeleton compliance on underlying ankle muscle-tendon dynamics

Bioinspiration & Biomimetics, 9(4).

By: B. Robertson, D. Farris & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2014 journal article

Musculoskeletal modelling deconstructs the paradoxical effects of elastic ankle exoskeletons on plantar-flexor mechanics and energetics during hopping

Journal of Experimental Biology, 217(22), 4018–4028.

By: D. Farris, J. Hicks, S. Delp & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2013 journal article

Elastic ankle exoskeletons reduce soleus muscle force but not work in human hopping

Journal of Applied Physiology, 115(5), 579–585.

By: D. Farris, B. Robertson & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2013 journal article

Estimation of quasi-stiffness and propulsive work of the human ankle in the stance phase of walking

PLoS One, 8(3).

By: K. Shamaei, G. Sawicki & A. Dollar

Source: NC State University Libraries
Added: August 6, 2018

2013 journal article

Estimation of quasi-stiffness of the human hip in the stance phase of walking

PLoS One, 8(12).

By: K. Shamaei, G. Sawicki & A. Dollar

Source: NC State University Libraries
Added: August 6, 2018

2013 journal article

Estimation of quasi-stiffness of the human knee in the stance phase of walking

PLoS One, 8(3).

By: K. Shamaei, G. Sawicki & A. Dollar

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

Elastic recoil can either amplify or attenuate muscle-tendon power, depending on inertial vs. fluid dynamic loading

Journal of Theoretical Biology, 313, 68–78.

By: C. Richards & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

Human medial gastrocnemius force-velocity behavior shifts with locomotion speed and gait

Proceedings of the National Academy of Sciences of the United States of America, 109(3), 977–982.

By: D. Farris & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

The influence of a unilateral fixed ankle on metabolic and mechanical demands during walking in unimpaired young adults

Journal of Biomechanics, 45(14), 2405–2410.

By: C. Wutzke, G. Sawicki & M. Lewek

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

The mechanics and energetics of human walking and running: A joint level perspective

Journal of the Royal Society Interface, 9(66), 110–118.

By: D. Farris & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018

2011 conference paper

Influence of parallel spring-loaded exoskeleton on ankle muscle-tendon dynamics during simulated human hopping

2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 583–586.

By: B. Robertson & G. Sawicki

Source: NC State University Libraries
Added: August 6, 2018