Gregory S Sawicki

Isolating the energetic and mechanical consequences of imposed reductions in ankle and knee flexion during gait

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 18(1).

Neuromechanics and Energetics of Walking With an Ankle Exoskeleton Using Neuromuscular-Model Based Control: A Parameter Study

FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY, 9.

Reduced Achilles Tendon Stiffness Disrupts Calf Muscle Neuromechanics in Elderly Gait

Krupenevich, R. L., Beck, O. N., Sawicki, G. S., & Franz, J. R. (2021, July 16). GERONTOLOGY.

Reduced joint motion supersedes asymmetry in explaining increased metabolic demand during walking with mechanical restriction

JOURNAL OF BIOMECHANICS, 126.

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

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 17(1).

Older Adults Overcome Reduced Triceps Surae Structural Stiffness to Preserve Ankle Joint Quasi-Stiffness During Walking

JOURNAL OF APPLIED BIOMECHANICS, 36(4), 209–216.

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

Journal of Neurotrauma, 36(21), 3018–3025.

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

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 16.

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.

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, Vol. 15, pp. 643–647.

Quantifying center of pressure variability in chondrodystrophoid dogs

The Veterinary Journal, 226, 26–31.

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.

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.

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

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

Adding Stiffness to the Foot Modulates Soleus Force-Velocity Behaviour during Human Walking

SCIENTIFIC REPORTS, 6.

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

JOURNAL OF APPLIED PHYSIOLOGY, 121(4), 1004–1012.

Muscle-spring dynamics in time-limited, elastic movements

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

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 12.

Individual limb mechanical analysis of gait following stroke

JOURNAL OF BIOMECHANICS, 48(6), 984–989.

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.

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

JOURNAL OF EXPERIMENTAL BIOLOGY, 218(22), 3700–3709.

Reducing the energy cost of human walking using an unpowered exoskeleton

NATURE, 522(7555), 212-+.

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.

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.

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.

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.

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

BIOINSPIRATION & BIOMIMETICS, 9(4).

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.

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

JOURNAL OF APPLIED PHYSIOLOGY, 115(5), 579–585.

Estimation of Quasi-Stiffness and Propulsive Work of the Human Ankle in the Stance Phase of Walking

PLOS ONE, 8(3).

Estimation of Quasi-Stiffness of the Human Hip in the Stance Phase of Walking

PLOS ONE, 8(12).

Estimation of Quasi-Stiffness of the Human Knee in the Stance Phase of Walking

PLOS ONE, 8(3).

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

JOURNAL OF THEORETICAL BIOLOGY, 313, 68–78.

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.

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.

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

JOURNAL OF THE ROYAL SOCIETY INTERFACE, 9(66), 110–118.

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.