Michael D Lewek
Affiliation: Northwestern University
- Hip joint position modulates volitional knee extensor muscle activity after strokeMichael D Lewek
Sensory Motor Performance Program, Rehabilitation Institute of Chicago, 345 E Superior Street, Suite 1406, Chicago, Illinois 60611, USA
Muscle Nerve 34:767-74. 2006..Such findings may have implications for understanding inappropriate muscle activity during walking after stroke, as hip extension occurs immediately prior to toe off, when inappropriate quadriceps activity is commonly observed...
- Stride-to-stride variability of knee motion in patients with knee osteoarthritisMichael D Lewek
Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Department of Physical Medicine and Rehabilitation, Northwestern University, 345 E Superior St, Suite 1406, Chicago, IL 60611, USA
Gait Posture 23:505-11. 2006..The purpose of this study was to quantify knee motion variability during gait and assess the influence of muscle activity, frontal plane laxity, and pain on knee movement variability in patients with medial knee OA...
- Central excitability contributes to supramaximal volitional contractions in human incomplete spinal cord injuryChristopher K Thompson
Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL 60612, USA
J Physiol 589:3739-52. 2011..Such data suggest a potential contribution of elevated spinal excitability to the reserve in volitional force generation in incomplete SCI...
- Heightened flexor withdrawal responses in subjects with knee osteoarthritisCarol A Courtney
University of Illinois at Chicago, Chicago, IL 60612, USA
J Pain 10:1242-9. 2009..0006). Impaired QA was found in 4 of 20 OA subjects but was not correlated to FWR threshold or pain levels. Peak joint torques were diminished in the OA versus the control group (P < .0006)...
- Prolonged quadriceps activity following imposed hip extension: a neurophysiological mechanism for stiff-knee gait?Michael D Lewek
Sensory Motor Performance Program, Rehabilitation Institute of Chicago, IL, USA
J Neurophysiol 98:3153-62. 2007..Hyperexcitable heteronymous connections from hip flexors to knee extensors appear to elicit prolonged quadriceps activity and may contribute to altered swing-phase knee kinematics following stroke...
- Biomechanical impairments and gait adaptations post-stroke: multi-factorial associationsTheresa Hayes Cruz
Northwestern University Department of Biomedical Engineering, 345 East Superior Street, Chicago, IL 60611, USA
J Biomech 42:1673-7. 2009..These findings provide insight regarding the potential impact of targeted rehabilitation paradigms on improving speed and compensatory kinematics following stroke...
- Repeated maximal volitional effort contractions in human spinal cord injury: initial torque increases and reduced fatigueT George Hornby
Department of Physical Medicine and Rehabilitation, Northwestern University Medical School, Chicago, Illinois 60612, USA
Neurorehabil Neural Repair 23:928-38. 2009..Few studies have investigated the extent of volitional fatigue in motor incomplete SCI...
- Age-related changes in strength, joint laxity, and walking patterns: are they related to knee osteoarthritis?Katherine S Rudolph
Department of Physical Therapy and Program in Biomechanics and Movement Science, University of Delaware, 301 McKinly Lab, Newark, DE 19716, USA
Phys Ther 87:1422-32. 2007..We examined age-related changes in musculoskeletal structures and walking patterns to better understand the relationship between aging and knee OA...
- Control of frontal plane knee laxity during gait in patients with medial compartment knee osteoarthritisMichael D Lewek
Department of Physical Therapy and Biomechanics and Movement Science Program, University of Delaware, Newark, DE 19716, USA
Osteoarthritis Cartilage 12:745-51. 2004....
- Eccentric muscle contractions: their contribution to injury, prevention, rehabilitation, and sportPaul C LaStayo
Division of Physical Therapy, University of Utah, Salt Lake City, UT 84108, USA
J Orthop Sports Phys Ther 33:557-71. 2003..Specifically, we explore the nature of the structural changes and how these adaptations may help prevent musculoskeletal injury, improve sport performance, and overcome musculoskeletal impairments...
- Knee stabilization in patients with medial compartment knee osteoarthritisMichael D Lewek
University of Delaware, Newark 19716, USA
Arthritis Rheum 52:2845-53. 2005..This study sought to determine how individuals with medial knee OA respond to a rapid valgus knee movement, to investigate the relationship between muscle-stabilization strategies and knee instability...
- Quadriceps femoris muscle weakness and activation failure in patients with symptomatic knee osteoarthritisMichael D Lewek
Department of Physical Therapy and Biomechanics and Movement Science Program, 301 McKinly Laboratory, University of Delaware, Newark, DE 19716, USA
J Orthop Res 22:110-5. 2004....
- Dynamic knee stability after anterior cruciate ligament ruptureMichael D Lewek
Department of Physical Therapy and Biomechanics, Movement Science Program, University of Delaware, Newark 19716, USA
Exerc Sport Sci Rev 31:195-200. 2003..Biomechanical, electromyographic, and clinical data support the classification scheme and perturbation training for improving dynamic knee stability...
- Aging skeletal muscle: physiologic changes and the effects of trainingGlenn N Williams
Biomechanics and Movement Science Program, University of Delaware, Department of Physical Therapy, 301 McKinly Laboratory, Newark, DE 19716, USA
Phys Ther 82:62-8. 2002