Physical Therapy and Rehabilitation Science

Laura A. Frey Law, MPT, MS, PhD

Portrait

Associate Professor, Dept of Physical Therapy & Rehabilitation Science
Associate Professor of Physical Therapy and Rehabilitation Science

Contact Information

Primary Office: 1-246 Medical Education Building
Iowa City, IA 52242
Primary Office Phone: 319-335-9804

Email: laura-freylaw@uiowa.edu
Web: Neuromuscular Biomechanics Laboratory

Education

B.S.E. with High Distinction, Biomedical Engineering, The University of Iowa, Iowa City, IA
M.P.T., Physical Therapy, The University of Iowa, Iowa City, IA
MS, Bioengineering, The University of Michigan, Ann Arbor, MI
PhD, Physical Rehabilitation Science, The University of Iowa, Iowa City, IA

Licensure and Certifications

Physical Therapy License, Iowa Board of Physical & Occupational Therapy

Education/Training Program Affiliations

Biosciences Graduate Program

Research Summary

My research follows two primary lines of investigation: 1) Factors that contribute to pain heterogeneity including: sex, psychological traits, genetics, activity level, etc. To study this question, we use experimental pain models in humans: intramuscular infusion of an acidic phosphate buffer into the anterior tibialis muscle, cold pressor task (hand immersion in ice water), or isolated muscle fatigue (isometric contraction to failure). We also utilize surveys of pain perceptions and self-reported personality responses. In particular we are focusing on why women appear to have a higher risk of referred pain with the muscle pain model (~80%) whereas men are less likely to experience referred pain (~45%) despite similar local infusion-site pain. 2) Strength and fatigue research: We are working with the Virtual Soldier Research (VSR) group to develop mathematical models of normal strength and fatigue, using both static and dynamic strength indices. In addition we are studying whether clear differences in fatigue with aging, by muscle group, or between sexes exist, and the potential interactions between these variables.

All Publications

Dailey D, Cooper N, Frey Law L, Sluka K.  Predictors of Reduced Function and Quality of Life in Individuals with Fibromyalgia and Healthy Subjects.  Combined Sections Meeting, APTA.  2014 February. 

Allen E, Galles J, Indovina D, Leacox K, Richards D, Shedek A, Surratt L, Looft J, Frey Law L.  Quantifying Strength Gain Magnitudes in Response to Short-Term Resistance Training: A Meta-Analysis..  Combined Sections Meeting, APTA.  2014 February. 

Frey Law L, Avin K.  Muscle coactivation: A generalized or localized motor control strategy?.  Muscle Nerve.  2013 October. 48(4):578-585.
[PubMed]

Frey Law L, Lee J, Wittry A, Melyon M.  Pain rating schema: THree distinct subgroups of individuals emerge when rating mild, moderate and severe pain..  J Pain Research.  2013 October. 

Segal N, Glass N, Frey Law L, Lewis C, Wang K, Nevitt M, Torner J.  The Relationship between Quadriceps Muscle Weakness and Worsening of Knee Pain in the MOST Cohort: a 5-Year Longitudinal Study. Osteoarthritis and Cartillage.  Osteoarthritis Cartilage.  2013 September 21. 9:1154-1159.
[PubMed]

Looft J, Frey Law L.  Comparison between Polynomial and Logistic Equations for Modeling Three Dimensional Strength Surfaces.  American Society for Biomechanics (ASB), Omaha, NE.  2013 September. 

Looft J, Stockdale A, Avin K, Frey Law L.  Normative 3D Strength Surfaces in Healthy Subjects for the Hip and Trunk Joint Complexes.  American Society for Biomechanics (ASB), Omaha, NE.  2013 September. 

Looft J, Frey Law L.  Predictive Three Dimensional Surfaces for Localized Jiont Level Muscle Fatigue During Intermittent tasks.  American Society for Biomechanics (ASB), Omaha, NE.  2013 September. 

Gregory N, Gibson-Corley K, Frey Law L, Sluka K.  Fatigue-enhanced hyperalgesia in response to muscle insult: induction and development occur in a sex-dependent manner..  Pain.  2013 July 29. 
[PubMed]

Lee J, Watson D, Frey Law L.  Psychological factors predict local and referred experimental muscle pain: A cluster analysis in healthy adults.  Eur J Pain.  2013 July. 17(6):903-915.
[PubMed]

Maxwell J, Keysor J, Niu J, Singh J, Wise B, Frey Law L, Nevitt M, Felson D.  Participation Following Knee Replacement: The MOST Cohort Study.  Phys Ther.  2013 June 27. 
[PubMed]

Frey Law L, Lee A, Lee J, Avin K.  Normative values for pain-related psychological traits differ between young and old adults.  American Pain Society (APS) Annual Meeting, New Orleans.  2013 May. 

Frey Law L, Kriener A, Lee J.  Path analysis of state and trait catastrophizing supports that pain mediates the state-trait relationship.  American Pain Society (APS) Annual Meeting, New Orleans.  2013 May. 

Frey Law L, Lee J, Bonilla J, Avin K.  Examining exercise motives: Evidence of a hierarchical factor structure for the Reasons for Exercise Inventory (REI).  Paper presented at the Society of Behavioral Medicine annual meeting (2013, March), San Francisco, CA.  2013 March. 

Lee J, Bonilla J, Avin K, Frey Law L.  Exercise motives differ by age and sex: Evidence for targeted health promotion strategies.  Paper presented at the Society of Behavioral Medicine annual meeting (2013, March), San Francisco, CA.  2013 March. 

Lee J, Sleeuwenhoek B, Frey Law L, Watson D.  Psychological factors are related to pain and function in head and neck cancer patients.  Paper presented at the Society of Behavioral Medicine annual meeting (2013, March), San Francisco, CA.  2013 March. 

Maxwell J, Frey Law L.  Does clinically important function after knee replacement guarantee good absolute function? The Multicenter Osteoarthritis Study..  J Rheumatology.  2013. 

Frey Law L, Laake A, Avin K, Heitsman J, Adel-Malek K.  Knee and Elbow 3D Strength Surfaces: Peak Torque–Angle–Velocity Relationships..  J Appl Biomech.  2012 December. 28(6):726-37.
[PubMed]

Frey Law L, Avin K, Tumuluri A.  Aging is all relative: modeling the relationship between strength and fatigue on endurance time in older adults.  American Society for Biomechanics (ASB), Gainesville, FL.  2012 August. 

Looft J, Frey Law L.  Parameterizing and Validating a Three Compartment Muscle Fatigue Model for Isometric Tasks.  American Society for Biomechanics (ASB), Gainesville, FL.  2012 August. 

Frey Law L, Looft J, Heitsman J.  A three-compartment muscle fatigue model accurately predicts joint-specific maximum endurance times for sustained isometric tasks.  J Biomech.  2012 June 26. 45(10):1803-1808.
[PubMed]

Stefanik J, Roemer F, Zumwalt A, Zhu Y, Gross K, Lynch J, Frey Law L, Lewis C, Guermazi A, Powers C, Felson D.  Association between measures of trochlear morphology and structural features of patellofemoral joint osteoarthritis on MRI: the MOST study.  J Orthop Res.  2012 June. 30(1):1-8.
[PubMed]

Frey L, Avin K, Kriener A.  Does pain limit function? Associations between pain and self-reported function and physical activity in the older adult.  American Pain Society (APS) Annual Meeting.  2012 May. 

Frey Law L, Wittry A, Lee J, Melyon M.  Evaluating Pain across Severities: Individuals Rely on Three Underlying Schemata to Rate Pain.  American Pain Society (APS) Annual Meeting.  2012 May. 

Frey Law L, Avin K.  Can muscle coordination be precisely studied by surface electromyography?.  J Electromyogr Kinesiol.  2012 April. 22(2):325-6.
[PubMed]

Frey Law L, Avin K.  Comment on "Can muscle coordination be precisely studied by surface electromyography?".  J Electromyogr Kinesiol.  2012 April. 22(2):325-326.
[PubMed]

Gregory N, Frey Law L, Sluka K.  Characterization of a Model of Long Lasting Muscle Pain Induced by Electrically Stimulated Muscle Contractions.  Abstract for poster presentation, International Association for the Study of Pain (IASP). Milan, Italy .  2012. 

Glass N, Segal N, Sluka K, Torner J, Nevitt M, Felson D, Lewis C, Frey Law L.  Do Women And Men With The Same Degree Of Radiographic Knee Osteoarthritis Experience Similar Levels Of Knee Pain, Functional Limitations Or Disability: The MOST Study.  OARSI (Barcelona).  2012. 

Stefanik J, Roemer F, Zumwalt A, Zhu Y, Gross K, Lynch J, Frey Law L, Lewis C, Guermazi A, Powers C, Felson D.  Association between measures of trochlear morphology and structural features of patellofemoral joint osteoarthritis on MRI: the MOST study..  J Orthop Res.  2012 January. 30(1):1-8.
[PubMed]

Neogi T, Niu J, Arendt-Nielsen L, Scholz J, Frey Law L, Woolf C, Zhang Y, Bradley L, Nevitt M, Felson D.  Pressure Pain Threshold and Knee Pain in Osteoarthritis: The MOST Study.  American College of Rheumatology (ACR) Annual Scientific Meeting.  2011 November. 

Avin K, Frey Law L.  Age-related differences in muscle fatigue vary by contraction type: A Meta-analysis.  Phys Ther .  2011 August. 91(8):1153-1165.
[PubMed]

Gregory N, Frey Law L, Sluka K.  A Possible Role for ASIC3 in Peripheral Fatigue-Enhanced Muscle Pain.  American Pain Society (APS) 30th Annual Scientific Meeting, Austin, TX .  2011 May. 

Frey Law L, Krishnan C, Avin K.  Author’s Response to Letter in regards to Modeling nonlinear errors in surface electromyography due to baseline noise: A new methodology.  J Biomechanics.  2011 May. 44(8):1637-1638.

Frey Law L, Carr W, Gentile A.  Relationship between physical activity and muscle pain sensitivity is intensity dependent.  American Pain Society (APS) 30th Annual Scientific Meeting, Austin, TX.  2011 May. 

Avin K, Frey Law L.  Is fatigue like wine? A meta-analysis approach.  APTA Combined Sections Meeting, New Orleans, LA.  2011 February. 

Frey Law L, Krishnan C, Avin K.  Modeling nonlinear errors in surface electromyography due to baseline noise: a new methodology.  J Biomechanics.  2011 January 4. 44(1):202-205.
[PubMed]

Gregory N, Frey Law L, Sluka K.  ASIC3 But Not ASIC1 Mediates Exercise-Induced Pain.  Society for Neuroscience (SFN).  2011. 

Maxwell J, Felson D, Niu J, Wise B, Nevitt M, Singh J, Frey Law L, Neogi T.  Does Important Change in Function After Knee Replacement Guarantee Good Absolute Function? The MOST Study.  ARHP.  2011. 

Neogi T, Scholz J, Niu J, Felson D, Segal N, Woolf C, Arendt-Nielsen L, Nevitt M, Bradley L, Frey Law L.  The association of peripheral and central sensitization with muscle co-activation: A common mechanism affecting pain and function in knee OA?.  OARSI.  2011. 

Frey Law L, Lee J, McMullen T, Xia T.  Relationships between maximum holding time and ratings of pain and exertion differ for static and dynamic tasks..  2010 December. 42(1):9-15.
[PubMed]

Neogi T, Niu J, Arendt-Nielsen L, Scholz J, Frey Law L, Woolf C, Zhang Y, Bradley L, Tolstykh I, Nevitt M, Felson D.  Central sensitization and knee pain in osteoarthritis: Preliminary results from the MOST study.  American College of Rheumatology (ACR) Annual Scientific Meeting. Atlanta, GA.  2010 November. 

Neogi T, Niu J, Frey Law L, Singh J, Arendt-Nielsen L, Scholz J, Woolf C, Tolstykh I, Wise B, Maxwell J, Nevitt M, Felson D.  Central sensitization in persistent pain post-knee replacement: the MOST study.  American College of Rheumatology (ACR) Annual Scientific Meeting. Atlanta, GA.  2010 November. 

Singh J, Jingbo N, Frey Law L, Scholz J, Arendt-Nielsen L, Lewis C, Woolf C, Bradley L, Felson D, Nevitt M, Tolstykh I, Neogi T.  Racial/ethnic and sex differences in somatosensory abnormalities.  American College of Rheumatology (ACR) Annual Scientific Meeting. Atlanta, GA.  2010 November. 

Shakoor N, Neogi T, Felson D, Niu J, Frey Law L, Lewis C, Nevitt M.  Vibratory sense deficits in radiographic knee osteoarthritis: The MOST study .  American College of Rheumatology (ACR) Annual Scientific Meeting. Atlanta, GA.  2010 November. 

Avin K, Naughton M, Ford B, Moore H, Monitto M, Stark A, Gentile A, Frey Law L.  Sex Differences in Fatigue Resistance Are Muscle Group Dependent.  Med & Sci Sports & Exer.  2010 October. 42(10):1943-1950.
[PubMed]

Stefanik J, Zhu Y, Zumwalt A, Gross K, Klancy M, Lynch J, Frey Law L, Lewis C, Roemer F, Powers C, Guermazi A, Felton D.  Association between patella alta and the prevalence and worsening of structural features of patellofemoral joint osteoarthritis: the multicenter osteoarthritis study.  Arthritis Care & Research.  2010 September. 62(9):1258-1265.
[PubMed]

Segal N, Frey Law L, Wang K, Torner J, Felson D.  Co-Activation of the Hamstrings During Isokinetic Quadriceps Activation Does Not Differ By History of Knee Joint Buckling.  OARSI World Congress on Osteoarthritis, Brussels, Belgium.  2010 September. 

Segal N, Frey Law L, Wang K, Torner J, Nevitt M, Lewis C, Felson D.  Isokinetic quadriceps strength measurements differ by hamstring co-activation level in the Multicenter Osteoarthritis Study.  OARSI World Congress on Osteoarthritis, Brussels, Belgium.  2010 September. 

Gregory N, Frey Law L, Walder R, Sluka K.  Isolated muscle fatigue enhances mechanical hyperalgesia in animals.  World Congress on Pain, International Association for the Study of Pain (IASP), Montreal, Canada.  2010 August. 

Frey Law L, Krishnan C, Avin K.  Modeling nonlinear error in surface electromyography due to baseline noise: A new methodology.  American Society for Biomechanics Annual Scientific Meeting, Providence, RI.  2010 August. 

Neogi T, Frey Law L, Bradley L, Felson D, Niu J, Arendt-Nielsen L, Woolf C, Nevitt M, Scholz J.  Somatosensory evaluation among persons with or at high-risk of knee osteoarthritis: The MOST Study.  World Congress on Pain, International Association for the Study of Pain (IASP), Montreal, Canada.  2010 August. 

Frey Law L, Lee J, Watson D.  Lower-order pain-related constructs are more predictive of cold pressor pain ratings than higher-order personality traits..  J Pain.  2010 July 11. 
[PubMed]

Frey Law L, Lee J, McMullen T, Xia T.  Relationships between maximum holding time and ratings of pain and exertion differ for static and dynamic tasks.  Applied Ergonomics.  2010 May 13. 42(1):9-15.
[PubMed]

Lee J, Watson D, Frey Law L.  Lower-order pain-related constructs are more predictive of cold pressor pain ratings than higher-order personality traits.  J Pain .  2010 March 31. 11(7):681-691.
[PubMed]

Rakel B, Cooper N, Adams H, Messer b, Frey Law L, Dannen D, Miller C, Polehna A, Ruggle R, Vance C, Walsh D, Sluka K.  A new transient sham TENS device allows for investigator blinding while delivering a true placebo treatment.  J Pain .  2010 March. 11(3):230-238.
[PubMed]

Frey Law L, Avin K.  Endurance time is joint-specific: a modeling and meta-analysis investigation.  Ergonomics.  2010 January. 53(1):109-129.
[PubMed]

Stefanik J, Zhu Y, Zumwalt A, Gross K, Clancy M, Lynch J, Frey Law L, Lewis C,  A, Powers C, Felson D.  Patella alta is associated with patellofemoral malalignment: The MOST study.  American College of Rheumatology Scientific Meeting.  2009 October. 

Stefanik J, Zhu Y, Zumwalt A, Gross K, Clancy M, Lynch J, Frey Law L, Lewis C, Roemer F, Powers C, Guermazi A, Felson D.  The Association Between Patella Alta and Structural Features of Patellofemoral Joint Osteoarthritis (OA) On MRI: The MOST Study.  American College of Rheumatology Scientific Meeting.  2009 October. 

Avin K, Frey Law L.  Endurance Time is Joint-Specific: A Modeling and Meta-Analysis Investigation.  American Society for Biomechanics Annual Scientific Meeting, Penn State University.  2009 August. 

Avin K, Gentile A, Ford B, Moore H, Monitto-Webber M, Naughton M, Norland G, Stark A, Frey Law L.  Sex Differences in Fatigue at the Elbow and Ankle.  APTA Section on Research Retreat, California.  2009 August. 

Avin K, Frey Law L.  Exercise much? Arrogance or arteries.  American College of Sports Medicine National Scientific Meeting, Baltimore, MD.  2009 June. 

Frey Law L, McMullen T, Lee J, Sluka K, Graven-Nielsen T.  Associations between Psychological Traits and Experimental Muscle Pain are Sex-Dependent.  American Pain Society (APS) 28th Annual Scientific Meeting.  2009 May. 

Abdel-Malek K, Arora J, Yang J, Marlar T, Beck S, Swan C, Frey Law L, Kim J, Bhatt R, Mathai A, Murphy C, Rahmatalla S, Patrick A, Obusek J.  A Physics-Based Digital Human Model.  International Journal of Vehicle Design .  2009. 51(3-4):324-340.

Frey Law L, Xia T.  “Individual Differences and Pain Variability”.  2009. 

Frey Law L, Sluka K, McMullen T, Lee J, Arendt-Nielsen L, Graven-Nielsen T.  Acidic buffer induced muscle pain evokes referred pain and mechanical hyperalgesia in humans.  Pain.  2008 November 30. 140(2):254-264.
[PubMed]

Feinstein J, Khalsa S, Salomons T, Prkachin K, Frey Law L, Vance C, Lee J, Morrison I, Stamy C, Grabowski T, Tranel D, Rudrauf D.  The Experience of Pain without the Anterior Cingulate and Insular Cortex.  Society for Neuroscience.  2008 November. 

Xia T, Frey Law L.  A theoretical approach for modeling peripheral muscle fatigue and recovery.  Journal of Biomechanics .  2008 October 20. 41(14):3046-3052.
[PubMed]

Pierce G, Frey Law L.  Isokinetic 3D Shoulder Strength Assessment: Internal External Rotation Strength Surfaces.  Biomedical Engineering Society Conference, St. Louis, MO.  2008 October. 

Frey Law L, McMullen T, Lee J, Sluka K, Arendt-Nielsen L, GRaven-Nielsen T.  Acidic Buffer Induced Muscle Pain Evokes Referred Pain and Mechanical Hyperalgesia In Humans.  World Congress on Pain, International Association for the Study of Pain (IASP), Glasgow, Scotland.  2008 August 23. 

Pierce G, Frey Law L.  3-D Strength Surfaces for Shoulder Internal and External Rotation.  North American Congress on Biomechanics (NACOB), Ann Arbor, MI.  2008 August 8. 

Xia T, Frey Law L.  Modeling Muscle Fatigue for Multiple Joints.  North American Congress on Biomechanics (NACOB), Ann Arbor, MI.  2008 August 8. 

Frey Law L, Evans S, Knudtson J, Nus S, Scholl K, Sluka K.  Massage reduces pain perception and hyperalgesia in experimental muscle pain: a randomized control trial.  J Pain.  2008 August. 9(8):714-721.
[PubMed]

Abdel-Malek K, Arora J, Frey Law L, Swan C, Beck S, Xia T, Bhatt R, Kim J, Xiang Y, Rasmussen M, Laake A, Marler T, Yang J.  Santos: A Digital Human in the Making.  The IASTED International Conference on Applied Simulation and Modeling (ASM08), Corfu, Greece.  2008 June 23. 

Frey Law L.  More Women than Men Experience Referred Pain in an Experimental Model of Muscle Pain.  American Pain Society (APS) 27th Annual Scientific Meeting, Tampa FL.  2008 May. 

Lee J, Hunstad T, Frey Law L.  Pain-specific constructs are more associated with muscle pain intensity than personality.  Society of Behavioral Medicine Annual Meeting, San Diego, CA.  2008 March. 

Frey Law L, McMullen T, Lee J, Sluka K, Graven-Nielsen T, Arendt-Nielsen L.  Mechanical Hyperalgesia can Occur in Referred Pain Areas.  APTA Combined Sections Meeting, Nashville, TN.  2008 February. 

Cooper N, Adams H, Granquist M, Messer B, Frey Law L, Rakel B, Vance C, Sluka K.  New TENS Placebo Allows for True Double Blinding.  APTA Combined Sections Meeting, Nashville, TN.  2008 February. 

Frey Law L, Lee J, McMullen T, Baier T, Goodall K, McEchron C, Schlichte A, Steege C, Breuer S, Craine M, Gustafson E, Mueller K, Root S.  Perceived Pain and Exertion during Fatigue are Distinct.  APTA Combined Sections Meeting, Nashville, TN.  2008 February. 

Xia T, Frey Law L.  Multiscale Approach to Muscle Fatigue Modeling.  Pacific Symposium on Biocomputation, Big Island, Hawaii.  2008 January 8. 

Rahmatalla S, Xia T, Contratto M, Kopp G, Wilder D, Frey Law L, Ankrum J.  3D motion capture protocol for seated operator in whole body vibration.  Int J Indust Erg.  2008. 38(5-6):425-433.

Frey Law L, Xia T, Laake A.  Modeling Human Physical Capability: Joint Strength and Range of Motion.  2008. 

Damon-Moore H, Gordon j, Frey Law L, Asprey D, Clark T, Skhal K, Ahrens L, Kelly M, Snetselaar L, Clow T, Smith K.  The University of Iowa COM—Changing the Face of Medicine; Team Work Poster Presented .  2007 November 15. 

Frey Law L, Laake A, Delmonaco C.  Contributions of Passive-Tension vs. Inertial Effects on Gravity Correction for Strength Training.  American Society for Biomechanics, Stanford University, Palo Alto, CA.  2007 August. 

Laake A, Frey Law L.  Modeling 3D Knee Torque Surfaces for Males and Females.  American Society for Biomechanics, Stanford University, Palo Alto, CA.  2007 August. 

Rahmatalla S, Xia T, Ankrum J, Wilder D, Frey Law L, Abdel-Malek K, Contratto M, Kopp G.  A Framework to Study Human Response to Whole Body Vibration.  Digital Human Modeling Conference, SAE, Seattle, WA.  2007 June. 

Frey Law L, Sluka K, Hunstad T, Lee J, Graven-Nielsen T.  Acidic buffer induced referred pain associated with mechanical hyperalgesia.  IASP Research Symposium 2007, Aalborg, Denmark.  2007 May 9. 

Frey Law L, Graven-Nielsen T, Lee J, Hunstad T, Arnedt-Nielsen L, Sluka K.  Acidic Induced Muscle Pain Evoke Ipsilateral Mechanical Hyperalgesia.  APS 26th Annual Scientific Meeting, Washington, DC.  2007 May 5. 

Lee J, Hunstad T, Frey Law L.  Ratings differ between multiple pain scales in an experimental model of pain..  Society of Behavioral Medicine Annual Meeting, Washington DC.  2007 March. 

Sluka K, Evans S, Knudtson J, Nus S, Scholl K, Frey Law L.  Massage Reduces Pain Perception and Hyperalgesia in Experimental Muscle Pain in Human Subjects.  APTA Combined Sections Meeting, Boston, MA.  2007 February. 

Hunstad T, Lee J, Frey Law L.  Perceived Exertion Versus Muscle Activation Strategy During Isometric Elbow Flexion Fatigue.  APTA Combined Sections Meeting, Boston, MA.  2007 February. 

Frey Law L, Shields R.  Mathematical models of human paralyzed muscle after long-term training.  J Biomech .  2007. 40(12):2587-2589.
[PubMed]

Rahmatalla S, Xia T, Contratto M, Kopp G, Wilder D, Frey Law L, Abdel-Malek K.  Motion analysis of seated operators in a whole body vibration environment.  Human Factors Engineering Technical Advisory Group 56th Meeting, Department of Defense, Monterey, California.  2006 November 6. 

Lee J, Hunstad T, Frey Law L.  The influence of neuroticism on pain perception among healthy young adult individuals.  30th Midwest Pain Society Scientific Meeting, Chicago, IL .  2006 September 15. 

Yang Q, Han R, Frey Law L.  Simulating motor units for fatigue in arm muscles in digital humans.  2006 Digital Human Modeling for Design and Engineering Conference, SAE, Lyon, France.  2006 July. 

Rahmatalla S, Xia T, Contratto M, Wilder D, Frey Law L, Kopp G, Grosland N.  3D displacement, velocity, and acceleration of seated operators in a whole body vibration environment using optical motion capture systems.  9th International Symposium on the 3D Analysis of Human Movement, Valenciennes, France.  2006 June 28. 

Frey Law L, Rahmatalla S, Wilder D, Grosland N, Xia T, Hunstad T, Contratto M, Kopp G.  Arm and shoulder muscle activity are greater with steering wheel vs seat mounted controls.  1st American Conference on Human Vibration, NIOSH, Morgantown, West Virginia.  2006 June 5. 

Wilder D, Rahmatalla S, Contratto M, Tia X, Frey Law L, Kopp G, Grosland N.  Head-trunk motions increase with arm-rest controls.  1st American Conference on Human Vibration, NIOSH, Morgantown, West Virginia.  2006 June 5. 

Baier T, Goodall K, McEchron C, Schlichte A, Steege C, Hunstad T, Lee J, Frey Law L.  The Association Between Personality Traits and the Perception of Pain and Exertion.  Midwest Pain Interest Group, Iowa City, IA.  2006 May 18. 

Frey Law L, Shields R.  Predicting human chronically paralyzed muscle force: a comparison of three mathematical models.  J Appl Physiol .  2006 March. 100(3):1027-1036.
[PubMed]

Shields R, Dudley-Javoroski S, Frey Law L.  Electrically-induced muscle contractions influence bone density decline after spinal cord injury.  Spine.  2006 March 1. 31(5):548-553.
[PubMed]

Abdel-Malek K, Marler T, Beck S, Arora J, Swan C, Frey Law L, Mathai A, Murphy C, Rahmatalla S, Patrick A.  A physics-based digital human simulation environment.  50th Annual Meeting of the Human Factors and Ergonomics Society, San Francisco, CA.  2006. 

Abdel-Malek K, Arora J, Yang J, Marlar T, Beck S, Colby S, Frey Law L, Mathai A, Murphy C, Rahmatalla S, Amos P.  A physics-based digital human simulation environment..  Human Factors and Ergonomics Society Annual Meeting Proceedings.  2006. 50(5):2279-2283.

Abdel-Malek K, Arora J, Yang J, Marlar T, Beck S, Colby S, Frey Law L, Mathai A, Murphy C, Rahmatalla S, Amos P.  A physics-based digital human simulation environment..  Human Factors and Ergonomics Society Annual Meeting Proceedings.  2006. 

Frey Law L, Shields R.  Accuracy of three mathematical models vs. human trained paralyzed muscle.  International Society for Biomechanics 20th Congress, Columbus, OH .  2005 August. 

Frey Law L, Shields R.  Mathematical models use varying parameter strategies to represent paralyzed muscle force properties: a sensitivity analysis.  J NeuroEng Rehabil .  2005 May 31. 2(12).
[PubMed]

Dudley-javoroski S, Frey Law L, Shields R.  Electrically-induced muscle contractions attenuate bone loss after spinal cord injury.  American College of Sports Medicine 52nd Annual Meeting, June, 2005, Nashville, TN. Medicine & Science in Sports & Exercise.  2005 May. 37(5).

Frey Law L, Shields R.  Predicting human paralyzed soleus muscle force properties using three mathematical muscle models.  2005 May. 

Frey Law L, Shields R.  Femoral loads during passive, active, and active-resistive stance after spinal cord injury: a mathematical model.  Clin Biomech .  2004 March. 19(3):313-321.
[PubMed]

Frey Law L.  Executive Corner: Exactly how do you pull together a campus-wide research forum?.  The Graduate Bulletin .  2003. 3(4):2.

Frey Law L, Shields R.  Longitudinal knee bone mineral density following spinal cord injury.  2002 June. 

Frey Law L, Shields R.  Compression and shear forces in the distal femur with passive and active standing in paralyzed subjects: a mathematical model.  2001 August 8. 

Frey Law L, Dargurz L.  Patient satisfaction survey of a custom-fit unloading brace for knee osteoarthritis.  2000 February 4. 

Westrick K, Frey Law L, Ott G.  Acute knee injury in a high school football player.  1999 June 16. 

Frey Law L, Dargurz L.  Isokinetic strength status post anterior cruciate ligament reconstruction: The first year.  1999 June 16. 

Frey Law L, Tissot B.  Thigh circumference vs. isokinetic strength measurements status post anterior cruciate ligament reconstruction.  1999 June 4. 

Frey Law L, Haftel H.  Shoulder, knee, and hip pain as initial symptoms of juvenile ankylosing spondylitis: a case report.  J Orthop Sports Phys Ther.  1998. 27(2):167-174.
[PubMed]

Shields R, Frey Law L, Reiling B, Sass K, Wilwert J.  Effects of electrically induced fatigue on the twitch and tetanus of paralyzed soleus muscle in humans.  J Appl Physiol .  1997. 82(25):1499-1507.
[PubMed]

Frey Law L, Smidt G.  Underwater forces produced by the hydro-tone bell.  J Orthop Sports Phys Ther.  1996. 23(4):267-271.
[PubMed]

Shields R, Frey Law L, Reiling B, Sass K, Wilwert J.  Effects of electrically induced fatigue on the twitch and tetanic contractile properties of the paralyzed soleus muscle in humans.  1993 November. 

Trombitas K, Frey Law L, Pollack J.  Filament lengths in frog semitendinosis and tibialis anterior muscle fibres.  J Muscle Res Cell Mot .  1993. 14(2):167-172.
[PubMed]

Frey Law L.  Modeling Muscle Strength and Fatigue. 

Date Last Modified: 06/07/2014 - 21:56:23