Gregory S. Sawicki - Publications

Affiliations: 
2009-2017 Biomedical Engineering North Carolina State University, Raleigh, NC 
 2017- Mechanical Engineering Georgia Institute of Technology, Atlanta, GA 
Area:
biomechanics, energetics, muscle

78 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2023 Nabipour M, Sawicki GS, Sartori M. Predictive Control of Peak Achilles Tendon Force in a Simulated System of the Human Ankle Joint with a Parallel Artificial Actuator During Hopping. Ieee ... International Conference On Rehabilitation Robotics : [Proceedings]. 2023: 1-6. PMID 37941182 DOI: 10.1109/ICORR58425.2023.10304771  0.354
2023 Pimentel RE, Sawicki GS, Franz JR. Simulations suggest walking with reduced propulsive force would not mitigate the energetic consequences of lower tendon stiffness. Plos One. 18: e0293331. PMID 37883368 DOI: 10.1371/journal.pone.0293331  0.318
2023 Abbott EM, Stephens JD, Simha SN, Wood L, Nardelli P, Cope TC, Sawicki GS, Ting LH. Attenuation of muscle spindle firing with artificially increased series compliance during stretch of relaxed muscle. Experimental Physiology. PMID 37856330 DOI: 10.1113/EP090872  0.831
2023 Funk CJ, Krupenevich RL, Sawicki GS, Franz JR. Exploring the functional boundaries and metabolic consequences of triceps surae force-length relations during walking (2021 Journal of Biomechanics Award Winner, American Society of Biomechanics). Journal of Biomechanics. 158: 111771. PMID 37647673 DOI: 10.1016/j.jbiomech.2023.111771  0.339
2023 Abbott EM, Stephens JD, Simha SN, Wood L, Nardelli P, Cope TC, Sawicki GS, Ting LH. Attenuation of muscle spindle firing with artificially increased series compliance during stretch of relaxed muscle. Biorxiv : the Preprint Server For Biology. PMID 37215007 DOI: 10.1101/2023.05.08.539853  0.83
2023 McCain EM, Dalman MJ, Berno ME, Libera TL, Lewek MD, Sawicki GS, Saul KR. The influence of induced gait asymmetry on joint reaction forces. Journal of Biomechanics. 153: 111581. PMID 37141689 DOI: 10.1016/j.jbiomech.2023.111581  0.356
2023 Sponberg S, Abbott E, Sawicki GS. Perturbing the muscle work loop paradigm to unravel the neuromechanics of unsteady locomotion. The Journal of Experimental Biology. 226. PMID 37042414 DOI: 10.1242/jeb.243561  0.828
2023 Beck ON, Shepherd MK, Rastogi R, Martino G, Ting LH, Sawicki GS. Exoskeletons need to react faster than physiological responses to improve standing balance. Science Robotics. 8: eadf1080. PMID 36791215 DOI: 10.1126/scirobotics.adf1080  0.759
2023 Williamson JL, Lichtwark GA, Sawicki GS, Dick TJM. The influence of elastic ankle exoskeletons on lower limb mechanical energetics during unexpected perturbations. Royal Society Open Science. 10: 221133. PMID 36756059 DOI: 10.1098/rsos.221133  0.306
2023 Leestma JK, Golyski PR, Smith CR, Sawicki GS, Young AJ. Linking whole-body angular momentum and step placement during perturbed walking. The Journal of Experimental Biology. PMID 36752161 DOI: 10.1242/jeb.244760  0.772
2023 Boyer KA, Hayes KL, Umberger BR, Adamczyk PG, Bean JF, Brach JS, Clark BC, Clark DJ, Ferrucci L, Finley J, Franz JR, Golightly YM, Hortobágyi T, Hunter S, Narici M, ... ... Sawicki G, et al. Age-related changes in gait biomechanics and their impact on the metabolic cost of walking: Report from a National Institute on Aging workshop. Experimental Gerontology. 112102. PMID 36693530 DOI: 10.1016/j.exger.2023.112102  0.692
2022 Pan YT, Kang I, Joh J, Kim P, Herrin KR, Kesar TM, Sawicki GS, Young AJ. Effects of Bilateral Assistance for Hemiparetic Gait Post-Stroke Using a Powered Hip Exoskeleton. Annals of Biomedical Engineering. PMID 35963920 DOI: 10.1007/s10439-022-03041-9  0.479
2022 Beck ON, Trejo LH, Schroeder JN, Franz JR, Sawicki GS. Shorter Muscle Fascicle Operating Lengths Increase the Metabolic Cost of Cyclic Force Production. Journal of Applied Physiology (Bethesda, Md. : 1985). PMID 35834625 DOI: 10.1152/japplphysiol.00720.2021  0.828
2022 Shafer BA, Powell JC, Young AJ, Sawicki GS. Emulator-based Optimization of a Semi-Active Hip Exoskeleton Concept: Sweeping Impedance Across Walking Speeds. Ieee Transactions On Bio-Medical Engineering. PMID 35788460 DOI: 10.1109/TBME.2022.3188482  0.45
2022 Golyski PR, Sawicki GS. Which lower limb joints compensate for destabilizing energy during walking in humans? Journal of the Royal Society, Interface. 19: 20220024. PMID 35642426 DOI: 10.1098/rsif.2022.0024  0.8
2021 Golyski PR, Vazquez E, Leestma JK, Sawicki GS. Onset timing of treadmill belt perturbations influences stability during walking. Journal of Biomechanics. 130: 110800. PMID 34864443 DOI: 10.1016/j.jbiomech.2021.110800  0.774
2021 McCain EM, Berno ME, Libera TL, Lewek MD, Sawicki GS, Saul KR. Reduced joint motion supersedes asymmetry in explaining increased metabolic demand during walking with mechanical restriction. Journal of Biomechanics. 126: 110621. PMID 34284306 DOI: 10.1016/j.jbiomech.2021.110621  0.311
2021 Krupenevich RL, Beck ON, Sawicki GS, Franz JR. Reduced Achilles Tendon Stiffness Disrupts Calf Muscle Neuromechanics in Elderly Gait. Gerontology. 1-11. PMID 34274923 DOI: 10.1159/000516910  0.756
2021 Rosa LG, Zia JS, Inan OT, Sawicki GS. Machine learning to extract muscle fascicle length changes from dynamic ultrasound images in real-time. Plos One. 16: e0246611. PMID 34038426 DOI: 10.1371/journal.pone.0246611  0.709
2021 Shafer BA, Philius SA, Nuckols RW, McCall J, Young AJ, Sawicki GS. Neuromechanics and Energetics of Walking With an Ankle Exoskeleton Using Neuromuscular-Model Based Control: A Parameter Study. Frontiers in Bioengineering and Biotechnology. 9: 615358. PMID 33954159 DOI: 10.3389/fbioe.2021.615358  0.571
2021 Beck ON, Gosyne J, Franz JR, Sawicki GS. Correction to: 'Cyclically producing the same average muscle-tendon force with a smaller duty increases metabolic rate'. Proceedings. Biological Sciences. 288: 20210012. PMID 33823676 DOI: 10.1098/rspb.2021.0012  0.793
2021 Dick TJM, Clemente CJ, Punith LK, Sawicki GS. Series elasticity facilitates safe plantar flexor muscle-tendon shock absorption during perturbed human hopping. Proceedings. Biological Sciences. 288: 20210201. PMID 33726594 DOI: 10.1098/rspb.2021.0201  0.837
2020 Beck ON, Golyski PR, Sawicki GS. Adding carbon fiber to shoe soles may not improve running economy: a muscle-level explanation. Scientific Reports. 10: 17154. PMID 33051532 DOI: 10.1038/s41598-020-74097-7  0.811
2020 Nuckols RW, Takahashi KZ, Farris DJ, Mizrachi S, Riemer R, Sawicki GS. Mechanics of walking and running up and downhill: A joint-level perspective to guide design of lower-limb exoskeletons. Plos One. 15: e0231996. PMID 32857774 DOI: 10.1371/Journal.Pone.0231996  0.414
2020 Beck ON, Gosyne J, Franz JR, Sawicki GS. Cyclically producing the same average muscle-tendon force with a smaller duty increases metabolic rate. Proceedings. Biological Sciences. 287: 20200431. PMID 32811308 DOI: 10.1098/Rspb.2020.0431  0.804
2020 Nuckols RW, Sawicki GS. Impact of elastic ankle exoskeleton stiffness on neuromechanics and energetics of human walking across multiple speeds. Journal of Neuroengineering and Rehabilitation. 17: 75. PMID 32539840 DOI: 10.1186/s12984-020-00703-4  0.365
2020 Krupenevich RL, Clark WH, Sawicki GS, Franz JR. Older Adults Overcome Reduced Triceps Surae Structural Stiffness to Preserve Ankle Joint Quasi-Stiffness During Walking. Journal of Applied Biomechanics. 1-8. PMID 32502975 DOI: 10.1123/Jab.2019-0340  0.446
2020 Nuckols RW, Dick TJM, Beck ON, Sawicki GS. Ultrasound imaging links soleus muscle neuromechanics and energetics during human walking with elastic ankle exoskeletons. Scientific Reports. 10: 3604. PMID 32109239 DOI: 10.1038/S41598-020-60360-4  0.792
2020 Sawicki GS, Beck ON, Kang I, Young AJ. The exoskeleton expansion: improving walking and running economy. Journal of Neuroengineering and Rehabilitation. 17: 25. PMID 32075669 DOI: 10.1186/S12984-020-00663-9  0.754
2019 Dick TJM, Punith LK, Sawicki GS. Humans falling in holes: adaptations in lower-limb joint mechanics in response to a rapid change in substrate height during human hopping. Journal of the Royal Society, Interface. 16: 20190292. PMID 31575349 DOI: 10.1098/Rsif.2019.0292  0.807
2019 Beck ON, Punith LK, Nuckols RW, Sawicki GS. Exoskeletons Improve Locomotion Economy by Reducing Active Muscle Volume. Exercise and Sport Sciences Reviews. PMID 31436749 DOI: 10.1249/Jes.0000000000000204  0.817
2019 Abbott EM, Nezwek T, Schmitt D, Sawicki GS. Hurry Up and Get Out of the Way! Exploring the Limits of Muscle-Based Latch Systems for Power Amplification. Integrative and Comparative Biology. 59: 1546-1558. PMID 31418784 DOI: 10.1093/Icb/Icz141  0.819
2019 Lewek MD, Sawicki GS. Trailing limb angle is a surrogate for propulsive limb forces during walking post-stroke. Clinical Biomechanics (Bristol, Avon). 67: 115-118. PMID 31102839 DOI: 10.1016/j.clinbiomech.2019.05.011  0.336
2019 McCain EM, Dick TJM, Giest TN, Nuckols RW, Lewek MD, Saul KR, Sawicki GS. Mechanics and energetics of post-stroke walking aided by a powered ankle exoskeleton with speed-adaptive myoelectric control. Journal of Neuroengineering and Rehabilitation. 16: 57. PMID 31092269 DOI: 10.1186/S12984-019-0523-Y  0.784
2018 Punith LK, Mcknight M, Narsipur S, Dick TJ, Sawicki GS. Muscle-tendon units can automatically reject perturbations without feedback during everyday cyclic tasks Integrative and Comparative Biology. 58. DOI: 10.1093/Icb/Icy002  0.8
2017 Robertson BD, Vadakkeveedu S, Sawicki GS. A benchtop biorobotic platform for in vitro observation of muscle-tendon dynamics with parallel mechanical assistance from an elastic exoskeleton. Journal of Biomechanics. PMID 28431748 DOI: 10.1016/j.jbiomech.2017.03.009  0.521
2016 Rosario MV, Sutton GP, Patek SN, Sawicki GS. Muscle-spring dynamics in time-limited, elastic movements. Proceedings. Biological Sciences / the Royal Society. 283. PMID 27629031 DOI: 10.1098/Rspb.2016.1561  0.823
2016 Danos N, Holt NC, Sawicki GS, Azizi E. Modeling age-related changes in muscle-tendon dynamics during cyclical contractions in the rat gastrocnemius. Journal of Applied Physiology (Bethesda, Md. : 1985). jap.00396.2016. PMID 27493196 DOI: 10.1152/Japplphysiol.00396.2016  0.681
2016 Takahashi KZ, Gross MT, van Werkhoven H, Piazza SJ, Sawicki GS. Adding Stiffness to the Foot Modulates Soleus Force-Velocity Behaviour during Human Walking. Scientific Reports. 6: 29870. PMID 27417976 DOI: 10.1038/Srep29870  0.458
2015 Sawicki G, Khan N. A simple model to estimate plantarflexor muscle-tendon mechanics and energetics during walking with elastic ankle exoskeletons. Ieee Transactions On Bio-Medical Engineering. PMID 26485350 DOI: 10.1109/TBME.2015.2491224  0.537
2015 Robertson BD, Sawicki GS. Unconstrained muscle-tendon workloops indicate resonance tuning as a mechanism for elastic limb behavior during terrestrial locomotion. Proceedings of the National Academy of Sciences of the United States of America. 112: E5891-8. PMID 26460038 DOI: 10.1073/pnas.1500702112  0.498
2015 Sawicki GS, Sheppard P, Roberts TJ. Power amplification in an isolated muscle-tendon is load dependent. The Journal of Experimental Biology. PMID 26449973 DOI: 10.1242/Jeb.126235  0.652
2015 Huang H, Crouch DL, Liu M, Sawicki GS, Wang D. A Cyber Expert System for Auto-Tuning Powered Prosthesis Impedance Control Parameters. Annals of Biomedical Engineering. PMID 26407703 DOI: 10.1007/S10439-015-1464-7  0.347
2015 Sawicki GS, Robertson BD, Azizi E, Roberts TJ. Timing matters: tuning the mechanics of a muscle-tendon unit by adjusting stimulation phase during cyclic contractions. The Journal of Experimental Biology. PMID 26232413 DOI: 10.1242/Jeb.121673  0.76
2015 Takahashi KZ, Lewek MD, Sawicki GS. A neuromechanics-based powered ankle exoskeleton to assist walking post-stroke: a feasibility study. Journal of Neuroengineering and Rehabilitation. 12: 23. PMID 25889283 DOI: 10.1186/s12984-015-0015-7  0.39
2015 Farris DJ, Hampton A, Lewek MD, Sawicki GS. 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: 24. PMID 25889030 DOI: 10.1186/s12984-015-0012-x  0.361
2015 Collins SH, Wiggin MB, Sawicki GS. Reducing the energy cost of human walking using an unpowered exoskeleton. Nature. 522: 212-5. PMID 25830889 DOI: 10.1038/Nature14288  0.815
2015 Zelik KE, Takahashi KZ, Sawicki GS. Six degree-of-freedom analysis of hip, knee, ankle and foot provides updated understanding of biomechanical work during human walking. The Journal of Experimental Biology. 218: 876-86. PMID 25788726 DOI: 10.1242/Jeb.115451  0.396
2015 Mahon CE, Farris DJ, Sawicki GS, Lewek MD. Individual limb mechanical analysis of gait following stroke. Journal of Biomechanics. 48: 984-9. PMID 25698237 DOI: 10.1016/j.jbiomech.2015.02.006  0.395
2014 Robertson BD, Farris DJ, Sawicki GS. More is not always better: modeling the effects of elastic exoskeleton compliance on underlying ankle muscle-tendon dynamics. Bioinspiration & Biomimetics. 9: 046018. PMID 25417578 DOI: 10.1088/1748-3182/9/4/046018  0.472
2014 Farris DJ, Hicks JL, Delp SL, Sawicki GS. Musculoskeletal modelling deconstructs the paradoxical effects of elastic ankle exoskeletons on plantar-flexor mechanics and energetics during hopping. The Journal of Experimental Biology. 217: 4018-28. PMID 25278469 DOI: 10.1242/jeb.107656  0.538
2014 Robertson BD, Sawicki GS. Exploiting elasticity: Modeling the influence of neural control on mechanics and energetics of ankle muscle-tendons during human hopping. Journal of Theoretical Biology. 353: 121-32. PMID 24641822 DOI: 10.1016/j.jtbi.2014.03.010  0.438
2013 Farris DJ, Robertson BD, Sawicki GS. Elastic ankle exoskeletons reduce soleus muscle force but not work in human hopping. Journal of Applied Physiology (Bethesda, Md. : 1985). 115: 579-85. PMID 23788578 DOI: 10.1152/japplphysiol.00253.2013  0.535
2013 Shamaei K, Sawicki GS, Dollar AM. Estimation of quasi-stiffness and propulsive work of the human ankle in the stance phase of walking. Plos One. 8: e59935. PMID 23555839 DOI: 10.1371/Journal.Pone.0059935  0.356
2013 Shamaei K, Sawicki GS, Dollar AM. Estimation of quasi-stiffness of the human knee in the stance phase of walking. Plos One. 8: e59993. PMID 23533662 DOI: 10.1371/Journal.Pone.0059993  0.374
2012 Farris DJ, Sawicki GS. Linking the mechanics and energetics of hopping with elastic ankle exoskeletons. Journal of Applied Physiology (Bethesda, Md. : 1985). 113: 1862-72. PMID 23065760 DOI: 10.1152/japplphysiol.00802.2012  0.485
2012 Richards CT, Sawicki GS. Elastic recoil can either amplify or attenuate muscle-tendon power, depending on inertial vs. fluid dynamic loading. Journal of Theoretical Biology. 313: 68-78. PMID 22898554 DOI: 10.1016/J.Jtbi.2012.07.033  0.417
2012 Wutzke CJ, Sawicki GS, Lewek MD. The influence of a unilateral fixed ankle on metabolic and mechanical demands during walking in unimpaired young adults. Journal of Biomechanics. 45: 2405-10. PMID 22840758 DOI: 10.1016/j.jbiomech.2012.06.035  0.473
2012 Farris DJ, Sawicki GS. 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: 977-82. PMID 22219360 DOI: 10.1073/pnas.1107972109  0.496
2012 Farris DJ, Sawicki GS. The mechanics and energetics of human walking and running: a joint level perspective. Journal of the Royal Society, Interface / the Royal Society. 9: 110-8. PMID 21613286 DOI: 10.1098/rsif.2011.0182  0.424
2011 Wiggin MB, Sawicki GS, Collins SH. An exoskeleton using controlled energy storage and release to aid ankle propulsion. Ieee ... International Conference On Rehabilitation Robotics : [Proceedings]. 2011: 5975342. PMID 22275547 DOI: 10.1109/ICORR.2011.5975342  0.797
2011 Robertson BD, Sawicki GS. Influence of parallel spring-loaded exoskeleton on ankle muscle-tendon dynamics during simulated human hopping. Conference Proceedings : ... Annual International Conference of the Ieee Engineering in Medicine and Biology Society. Ieee Engineering in Medicine and Biology Society. Annual Conference. 2011: 583-6. PMID 22254377 DOI: 10.1109/IEMBS.2011.6090109  0.421
2009 Sawicki GS, Lewis CL, Ferris DP. It pays to have a spring in your step. Exercise and Sport Sciences Reviews. 37: 130-8. PMID 19550204 DOI: 10.1097/Jes.0B013E31819C2Df6  0.765
2009 Sawicki GS, Ferris DP. A pneumatically powered knee-ankle-foot orthosis (KAFO) with myoelectric activation and inhibition. Journal of Neuroengineering and Rehabilitation. 6: 23. PMID 19549338 DOI: 10.1186/1743-0003-6-23  0.694
2009 Sawicki GS, Ferris DP. Mechanics and energetics of incline walking with robotic ankle exoskeletons. The Journal of Experimental Biology. 212: 32-41. PMID 19088208 DOI: 10.1242/jeb.017277  0.695
2009 Sawicki GS, Ferris DP. Powered ankle exoskeletons reveal the metabolic cost of plantar flexor mechanical work during walking with longer steps at constant step frequency. The Journal of Experimental Biology. 212: 21-31. PMID 19088207 DOI: 10.1242/jeb.017269  0.672
2009 Sawicki GS, Sheppard P, Roberts TJ. Mechanical power amplification in a compliant muscle–tendon working on an inertial load in gravity Comparative Biochemistry and Physiology a-Molecular & Integrative Physiology. 153. DOI: 10.1016/J.Cbpa.2009.04.220  0.523
2008 Sawicki GS, Ferris DP. Mechanics and energetics of level walking with powered ankle exoskeletons. The Journal of Experimental Biology. 211: 1402-13. PMID 18424674 DOI: 10.1242/jeb.009241  0.657
2008 Sawicki G. Tendon elasticity influences the mechanics, energetics and control of muscle contraction: Insights from walking humans and isolated frog muscle-tendon Comparative Biochemistry and Physiology a-Molecular & Integrative Physiology. 150. DOI: 10.1016/J.Cbpa.2008.04.085  0.503
2007 Ferris DP, Sawicki GS, Daley MA. A PHYSIOLOGIST'S PERSPECTIVE ON ROBOTIC EXOSKELETONS FOR HUMAN LOCOMOTION. International Journal of Hr : Humanoid Robotics. 4: 507-528. PMID 18185840 DOI: 10.1142/S0219843607001138  0.725
2007 Domingo A, Sawicki GS, Ferris DP. 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. PMID 17711590 DOI: 10.1186/1743-0003-4-32  0.693
2006 Sawicki GS, Domingo A, Ferris DP. The effects of powered ankle-foot orthoses on joint kinematics and muscle activation during walking in individuals with incomplete spinal cord injury. Journal of Neuroengineering and Rehabilitation. 3: 3. PMID 16504172 DOI: 10.1186/1743-0003-3-3  0.74
2006 Ferris DP, Gordon KE, Sawicki GS, Peethambaran A. An improved powered ankle-foot orthosis using proportional myoelectric control. Gait & Posture. 23: 425-8. PMID 16098749 DOI: 10.1016/j.gaitpost.2005.05.004  0.761
2006 Gordon KE, Sawicki GS, Ferris DP. Mechanical performance of artificial pneumatic muscles to power an ankle-foot orthosis. Journal of Biomechanics. 39: 1832-41. PMID 16023126 DOI: 10.1016/j.jbiomech.2005.05.018  0.785
2006 Sawicki G, Ferris D. Mechanics and control of a knee ankle foot orthosis (KAFO) powered with artificial pneumatic muscles Journal of Biomechanics. 39: S109. DOI: 10.1016/S0021-9290(06)83333-6  0.669
2006 Domingo A, Sawicki G, Ferris D. Comparison of muscle activity and kinematics during treadmill walking with and without manual assistance in individuals with incomplete spinal cord injury Journal of Biomechanics. 39: S108. DOI: 10.1016/S0021-9290(06)83328-2  0.7
2005 Ferris DP, Sawicki GS, Domingo A. Powered lower limb orthoses for gait rehabilitation. Topics in Spinal Cord Injury Rehabilitation. 11: 34-49. PMID 16568153 DOI: 10.1310/6GL4-UM7X-519H-9JYD  0.674
2005 Sawicki GS, Gordon KE, Ferris DP. Powered lower limb orthoses: Applications in motor adaptation and rehabilitation Proceedings of the 2005 Ieee 9th International Conference On Rehabilitation Robotics. 2005: 206-211. DOI: 10.1109/ICORR.2005.1501086  0.637
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