Publications by authors named "Gregory Knapik"

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Biomechanical models of lumbar spine degeneration: Methods, challenges, and clinical promise.
Hamed Hani, Gregory G Knapik, Eric C Bourekas, William S Marras

Clin Biomech (Bristol)· December 2025

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Baseline characteristics of participants in the Biomarkers for Evaluating Spine Treatments clinical trial: a sequential multiple assignment randomized trial for chronic low back pain†.
Bryce Rowland, Kelly S Barth, Kevin M Bell, Amber K Brooks, Andrea L Chadwick, Gregory G Knapik

Pain Med· November 2025

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A Computational Multiscale Framework for Bone Remodeling: Coupling Apparent Density Evolution and Microscale Shape Optimization.
Balavignesh Vemparala, Mingshi Ji, Prasath Mageswaran, Gregory G Knapik, Khaled Dibs

Int J Numer Method Biomed Eng· October 2025

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The design and rationale of the Biomarkers for Evaluating Spine Treatments trial: a sequential multiple assignment randomized trial.
Matthew C Mauck, Kelly S Barth, Kevin M Bell, Amber K Brooks, Andrea L Chadwick, Gregory G Knapik

Pain Med· September 2025

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Wearable motion-based platform for functional spine health assessment.
Prasath Mageswaran, Jonathan Dufour, Alexander Aurand, Gregory Knapik, Hamed Hani

Reg Anesth Pain Med· July 2024

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Computational lumbar spine models: A literature review.
Gregory G Knapik, Ehud Mendel, Eric Bourekas, William S Marras

Clin Biomech (Bristol)· December 2022

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A physiological and biomechanical investigation of three passive upper-extremity exoskeletons during simulated overhead work.
Eric B Weston, Mina Alizadeh, Hamed Hani, Gregory G Knapik, Reid A Souchereau

Ergonomics· January 2022

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An electromyography-assisted biomechanical cervical spine model: Model development and validation.
Mina Alizadeh, Alexander Aurand, Gregory G Knapik, Jonathan S Dufour, Ehud Mendel

Clin Biomech (Bristol)· December 2020

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One versus two-handed lifting and lowering: lumbar spine loads and recommended one-handed limits protecting the lower back.
Eric B Weston, Alexander M Aurand, Jonathan S Dufour, Gregory G Knapik, William S Marras

Ergonomics· April 2020

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Biomechanical musculoskeletal models of the cervical spine: A systematic literature review.
Mina Alizadeh, Gregory G Knapik, Prasath Mageswaran, Ehud Mendel, Eric Bourekas

Clin Biomech (Bristol)· January 2020

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Impact of two postural assist exoskeletons on biomechanical loading of the lumbar spine.
Michael T Picchiotti, Eric B Weston, Gregory G Knapik, Jonathan S Dufour, William S Marras

Appl Ergon· February 2019

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Application of MR-derived cross-sectional guideline of cervical spine muscles to validate neck surface electromyography placement.
Mina Alizadeh, Gregory G Knapik, William S Marras

J Electromyogr Kinesiol· December 2018

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Biomechanically determined hand force limits protecting the low back during occupational pushing and pulling tasks.
Eric B Weston, Alexander Aurand, Jonathan S Dufour, Gregory G Knapik, William S Marras

Ergonomics· June 2018

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Biomechanical evaluation of exoskeleton use on loading of the lumbar spine.
Eric B Weston, Mina Alizadeh, Gregory G Knapik, Xueke Wang, William S Marras

Appl Ergon· April 2018

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Development and testing of a moment-based coactivation index to assess complex dynamic tasks for the lumbar spine.
Peter Le, Alexander Aurand, Jonathan S Dufour, Gregory G Knapik, Thomas M Best

Clin Biomech (Bristol)· July 2017

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Curved muscles in biomechanical models of the spine: a systematic literature review.
Jaejin Hwang, Gregory G Knapik, Jonathan S Dufour, William S Marras

Ergonomics· April 2017

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Validation of a personalized curved muscle model of the lumbar spine during complex dynamic exertions.
Jaejin Hwang, Gregory G Knapik, Jonathan S Dufour, Thomas M Best, Safdar N Khan

J Electromyogr Kinesiol· April 2017

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A biologically-assisted curved muscle model of the lumbar spine: Model structure.
Jaejin Hwang, Gregory G Knapik, Jonathan S Dufour, Alexander Aurand, Thomas M Best

Clin Biomech (Bristol)· August 2016

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Prediction of magnetic resonance imaging-derived trunk muscle geometry with application to spine biomechanical modeling.
Jaejin Hwang, Jonathan S Dufour, Gregory G Knapik, Thomas M Best, Safdar N Khan

Clin Biomech (Bristol)· August 2016

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A biologically-assisted curved muscle model of the lumbar spine: Model validation.
Jaejin Hwang, Gregory G Knapik, Jonathan S Dufour, Thomas M Best, Safdar N Khan

Clin Biomech (Bristol)· August 2016

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Objective classification of vehicle seat discomfort.
Peter Le, Joseph Rose, Gregory Knapik, William S Marras

Ergonomics· April 2015

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Comparison of the accuracy of Biomet 3i Encode Robocast Technology and conventional implant impression techniques.
Kent J Howell, Edwin A McGlumphy, Carl Drago, Gregory Knapik

Int J Oral Maxillofac Implants· February 2014

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An EMG-assisted model calibration technique that does not require MVCs.
Jonathan S Dufour, William S Marras, Gregory G Knapik

J Electromyogr Kinesiol· June 2013

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Addressing methodological and ethical challenges of qualitative health research on persons with schizophrenia and bipolar disorder.
Christine Heifner Graor, Gregory P Knapik

Arch Psychiatr Nurs· April 2013

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Musculoskeletal disorder risk during automotive assembly: current vs. seated.
Sue A Ferguson, William S Marras, W Gary Allread, Gregory G Knapik, Riley E Splittstoesser

Appl Ergon· July 2012

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