Now showing items 1-20 of 31

  • Explaining the hip adduction moment variability during gait: Implications for hip abductor strengthening 

    Rutherford, D. J., & Hubley-Kozey, C. (2009). Explaining the hip adduction moment variability during gait: Implications for hip abductor strengthening. Clinical Biomechanics, 24(3), 267-273.
    Background There is emerging interest in hip abductor function during gait and its potential relationship to knee joint pathology. During gait, the hip abductor muscles are primarily responsible for generating moments of ...
  • The interpretation of abdominal wall muscle recruitment strategies change when the electrocardiogram (ECG) is removed from the electromyogram (EMG) 

    Published version: Butler, Heather L., et al. "The interpretation of abdominal wall muscle recruitment strategies change when the electrocardiogram (ECG) is removed from the electromyogram (EMG)." Journal of Electromyography and Kinesiology 19.2 (2009): e102-e113. doi:10.1016/j.jelekin.2007.10.004
    The purpose of this study was to determine the effect of the ECG artifact on low-level trunk muscle activation amplitudes and assess the effectiveness of two methods used to remove the ECG. Simulations were performed and ...
  • Activation amplitude patterns do not change for back muscles but are altered for abdominal muscles between dominant and non-dominant hands during one-handed lifts 

    Published version: : Butler, Heather L., Cheryl L. Hubley-Kozey, and John W. Kozey. "Activation amplitude patterns do not change for back muscles but are altered for abdominal muscles between dominant and non-dominant hands during one-handed lifts." European journal of applied physiology 106.1 (2009): 95-104. doi:10.1007/s00421-009-0994-9
    It is assumed when lifting with the dominant hand that the relationship between contralateral and ipsilateral trunk muscle responses are similar to when lifting with the non-dominant hand. The purpose of this study was to ...
  • Co-activation differences in lower limb muscles between asymptomatic controls and those with varying degrees of knee osteoarthritis during walking 

    Published version: Hubley-Kozey, Cheryl, Nicholas A. Hill, Derek J. Rutherford, Michael J. Dunbar, et al. 2009. "Co-activation differences in lower limb muscles between asymptomatic controls and those with varying degrees of knee osteoarthritis during walking." Clinical Biomechanics 24(5): 407-414. doi:10.1016/j.clinbiomech.2009.02.005
    Abstract: Background: Increased muscle co-activation during gait has been identified as a neuromuscular alteration associated with knee osteoarthritis, however levels of co-activation among different osteoarthritis severity ...
  • Differences in Abdominal Muscle Activation Patterns of Younger and Older Adults Performing an Asymmetric Leg-Loading Task 

    Published version: Hubley-Kozey, Cheryl L., et al. "Differences in abdominal muscle activation patterns of younger and older adults performing an asymmetric leg-loading task." PM&R 1.11 (2009): 1004-1013. doi:10.1016/j.pmrj.2009.09.018
    Objectives: To determine whether differences exist between younger (20-50 years) and older adults ( 65 years) in abdominal muscle amplitudes, temporal patterns, and threedimensional (3D) pelvic motion, while performing ...
  • Electromyographic assessment of trunk muscle activation amplitudes during a simulated lifting task using pattern recognition techniques 

    Published version: Butler, Heather L., Cheryl L. Hubley-Kozey, and John W. Kozey. "Electromyographic assessment of trunk muscle activation amplitudes during a simulated lifting task using pattern recognition techniques." Journal of Electromyography and Kinesiology 19.6 (2009): e505-e512. doi:10.1016/j.jelekin.2008.09.010
    This study sought to determine the patterns of neuromuscular response from 24-trunk muscle sites during a symmetrical lift and replace task. Surface electromyograms (EMG) and kinematic variables were recorded from 29 healthy ...
  • Characterisation of trunk muscle activation amplitude patterns during a simulated checkstand operation with continuously changing flexor and lateral moment demands 

    Published version: Butler, Heather L., Cheryl L. Hubley-Kozey, and John W. Kozey. "Characterisation of trunk muscle activation amplitude patterns during a simulated checkstand operation with continuously changing flexor and lateral moment demands." Ergonomics 53.5 (2010): 685-695. doi:10.1080/00140131003671991.
    While the typical physical exposure to modern-day workers has changed from heavy to low level repetitive demands, there is limited research that examines light occupations. This study examined trunk muscle recruitment ...
  • Temporal coactivation of abdominal muscles during dynamic stability exercises 

    Published version: Hubley-Kozey, Cheryl L., Gillian L. Hatfield, and Krista Clarke Davidson. "Temporal coactivation of abdominal muscles during dynamic stability exercises." The Journal of Strength & Conditioning Research 24.5 (2010): 1246-1255. doi:10.1519/JSC.0b013e3181ce24c7
    The purpose of this study was to determine abdominal muscle temporal responses to a leg-loading exercise protocol and if differences exist between those able and unable to minimize lumbar-pelvic motion during this protocol. ...
  • Maximal voluntary isometric contraction exercises: A methodological investigation in moderate knee osteoarthritis 

    Rutherford, D. J., Hubley-Kozey, C. L., & Stanish, W. D. (2011). Maximal voluntary isometric contraction exercises: a methodological investigation in moderate knee osteoarthritis. Journal of Electromyography and Kinesiology, 21(1), 154-160.
    Purpose: The objectives were, (i) to determine whether differences exist in relative activation amplitudes for participants with asymptomatic knees and participants with moderate medial compartment knee osteoarthritis ...
  • Neuromuscular alterations exist with knee osteoarthritis presence and severity despite walking velocity similarities 

    Rutherford, D. J., Hubley-Kozey, C. L., Stanish, W. D., & Dunbar, M. J. (2011). Neuromuscular alterations exist with knee osteoarthritis presence and severity despite walking velocity similarities. Clinical Biomechanics, 26(4), 377-383.
    Background Neuromuscular strategies during walking in individuals with knee osteoarthritis are being explored for diagnostic information; however, isolating differences to disease progression is difficult given walking ...
  • The Effect of Total Knee Arthroplasty on Knee Joint Kinematics and Kinetics During Gait 

    Published version: Hatfield, Gillian L., et al. "The effect of total knee arthroplasty on knee joint kinematics and kinetics during gait." The Journal of arthroplasty 26.2 (2011): 309-318. doi:10.1016/j.arth.2010.03.021
    This study determined how total knee arthroplasty (TKA) altered knee motion and loading during gait. Three-dimensional kinematic and kinetic gait patterns of 42 patients with severe knee osteoarthritis were collected 1 ...
  • State-related changes in MEG functional connectivity reveal the task-positive sensorimotor network 

    Bardouille, T., and S. Boe. 2012. "State-related changes in MEG functional connectivity reveal the task-positive sensorimotor network." PloS one 7(10): 48682. doi:10.1371/journal.pone.0048682
    Functional connectivity measures applied to magnetoencephalography (MEG) data have the capacity to elucidate neuronal networks. However, the task-related modulation of these measures is essential to identifying the functional ...
  • State-related changes in MEG functional connectivity reveal the task-positive sensorimotor network 

    Bardouille, T., and S. Boe. 2012. "State-related changes in MEG functional connectivity reveal the task-positive sensorimotor network." PloS one 7(10): 48682.
    Functional connectivity measures applied to magnetoencephalography (MEG) data have the capacity to elucidate neuronal networks. However, the task-related modulation of these measures is essential to identifying the functional ...
  • Effect of a high intensity quadriceps fatigue protocol on knee joint mechanics and muscle activation during gait in young adults. 

    Murdock, Gillian Hatfield, and Cheryl L. Hubley-Kozey. "Effect of a high intensity quadriceps fatigue protocol on knee joint mechanics and muscle activation during gait in young adults." European journal of applied physiology 112.2 (2012): 439-449. doi:10.1007/s00421-011-1990-4 © 2012 SpingerLink
    The purpose of this study was to determine the effect of impaired quadriceps function on knee joint biomechanics and neuromuscular function during gait. Surface electromyograms, three-dimensional motion and ground reaction ...
  • Is There a Dose Response for Valgus Unloader Brace Usage on Knee Pain, Function, and Muscle Strength? 

    Hurley, Sean, T., , William, D. Stanish, and Cheryl Hubley-Kozey. 2012. "Is There a Dose Response for Valgus Unloader Brace Usage on Knee Pain, Function, and Muscle Strength?." Archives of Physical Medicine & Rehabilitation 93(3): 496-502.
    Abstract: Hurley ST, Hatfield Murdock GL, Stanish WD, Hubley-Kozey CL. Is there a dose response for valgus unloader brace usage on knee pain, function, and muscle strength? Objective: To examine whether there was a dose ...
  • Activation amplitude and temporal synchrony among back extensor and abdominal muscles during a controlled transfer task: comparison of men and women 

    Hubley-Kozey, Cheryl L., Heather L. Butler, and John W. Kozey. "Activation amplitude and temporal synchrony among back extensor and abdominal muscles during a controlled transfer task: Comparison of men and women." Human movement science 31.4 (2012): 863-879.
    Muscle synergies are important for spinal stability, but few studies examine temporal responses of spinal muscles to dynamic perturbations. This study examined activation amplitudes and temporal synergies among compartments ...
  • Pre-operative muscle activation patterns during walking are associated with TKA tibial implant migration. 

    Wilson, David AJ, et al. "Pre-operative muscle activation patterns during walking are associated with TKA tibial implant migration." Clinical biomechanics 27.9 (2012): 936-942. doi:10.1016/j.clinbiomech.2012.06.012
    Background Gait biomechanical variables have been associated with total knee arthroplasty tibial implant migration measured with Radiostereometric Analysis (RSA), but no studies have examined the role of the periarticular ...
  • Reliability of Principal Components and Discrete Parameters of Knee Angle and Moment Gait Waveforms in Individuals with Moderate Knee Osteoarthritis 

    Robbins, S. M., Wilson, J. L. A., Rutherford, D. J., & Hubley-Kozey, C. L. (2013). Reliability of principal components and discrete parameters of knee angle and moment gait waveforms in individuals with moderate knee osteoarthritis. Gait & posture, 38(3), 421-427.
    Gait measures are used to evaluate change in patients with knee osteoarthritis (OA), but reliability has not been fully established in this population. This study examined test-retest reliability of knee angle and moment ...
  • Changes in Knee Joint Muscle Activation Patterns during Walking Associated with Increased Structural Severity in Knee Osteoarthritis 

    Rutherford, D. J., Hubley-Kozey, C. L., & Stanish, W. D. (2013). Changes in knee joint muscle activation patterns during walking associated with increased structural severity in knee osteoarthritis. Journal of Electromyography and Kinesiology, 23(3), 704-711.
    Purpose To determine whether alterations in knee joint muscle activation patterns during gait were related to structural severity determined by Kellgren–Lawrence (KL) radiographic grades, for those with a moderate knee ...
  • Reliability of surface electromyographic recordings during walking in individuals with knee osteoarthritis 

    Hubley-Kozey, C. L., Robbins, S. M., Rutherford, D. J., & Stanish, W. D. (2013). Reliability of surface electromyographic recordings during walking in individuals with knee osteoarthritis. Journal of Electromyography and Kinesiology, 23(2), 334-341.
    To determine test–retest reliability of a surface electromyographic protocol designed to measure knee joint muscle activation during walking in individuals with knee osteoarthritis (OA). Twenty-one individuals with moderate ...