Browsing Physiotherapy Faculty Research, Publications and Presentations by Title

Now showing items 10-29 of 31

  • 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 ...

  • 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 ...

  • 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 ...

  • 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 ...

  • Hip abductor function in individuals with medial knee osteoarthritis: Implications for medial compartment loading during gait 

    Rutherford, D. J., Hubley-Kozey, C., & Stanish, W. (2014). Hip abductor function in individuals with medial knee osteoarthritis: Implications for medial compartment loading during gait. Clinical Biomechanics, 29(5), 545-550.
    Background Hip abductor muscles generate moments of force that control lower extremity frontal plane motion. Strengthening these muscles has been a recent trend in therapeutic intervention studies for knee osteoarthritis. ...

  • 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 ...

  • 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 ...

  • Knee joint biomechanics and neuromuscular control during gait before and after total knee arthroplasty are sex-specific. 

    Wilson, Janie L. Astephen, Michael J. Dunbar, and Cheryl L. Hubley-Kozey. "Knee joint biomechanics and neuromuscular control during gait before and after total knee arthroplasty are sex-specific." The Journal of arthroplasty 30.1 (2015): 118-125.
    The future of total knee arthroplasty (TKA) surgery will involve planning that incorporates more patient-specific characteristics. Despite known biological, morphological, and functional differences between men and women, ...

  • 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 ...

  • Obesity is associated with higher absolute tibiofemoral contact and muscle forces during gait with and without knee osteoarthritis 

    Published version: Harding, Graeme T., et al. "Obesity is associated with higher absolute tibiofemoral contact and muscle forces during gait with and without knee osteoarthritis." Clinical Biomechanics 31 (2016): 79-86. doi:10.1016/j.clinbiomech.2015.09.017
    Background Obesity is an important risk factor for knee osteoarthritis initiation and progression. However, it is unclear how obesity may directly affect the mechanical loading environment of the knee joint, initiating ...

  • Obesity is associated with prolonged activity of the quadriceps and gastrocnemii during gait 

    Published version: Amiri, P., et al. "Obesity is associated with prolonged activity of the quadriceps and gastrocnemii during gait." Journal of Electromyography and Kinesiology 25.6 (2015): 951-958. doi:10.1016/j.jelekin.2015.10.007
    Purpose: To examine the effect of obesity and its potential interaction with knee OA presence on the electromyography patterns of the major knee joint periarticular muscles during walking. Scope: One hundred and eighteen ...

  • 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 ...

  • Relationship between knee adduction moment patterns extracted using principal component analysis and discrete measures with different amplitude normalizations: Implications for knee osteoarthritis progression studies. 

    Hatfield, Gillian L., William D. Stanish, and Cheryl L. Hubley-Kozey. "Relationship between knee adduction moment patterns extracted using principal component analysis and discrete measures with different amplitude normalizations: Implications for knee osteoarthritis progression studies." Clinical Biomechanics 30.10 (2015): 1146-1152.
    BACKGROUND: Knee adduction moment discrete features (peaks and impulses) are commonly reported in knee osteoarthritis gait studies, but they do not necessarily capture loading patterns. Principal component analysis ...

  • 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 ...

  • 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 ...

  • Sit-to-stand transfer mechanics in healthy older adults: A comprehensive investigation of a portable lifting seat device. 

    Published version: Rutherford, D. J., Hurley, S. T., & Hubley-Kozey, C. (2016). Sit-to-stand transfer mechanics in healthy older adults: a comprehensive investigation of a portable lifting-seat device. Disability and Rehabilitation: Assistive Technology, 11(2), 158-165.
    Purpose: To evaluate lower extremity mechanics and muscle activation associated with the sit-to-stand transfer using a portable lifting-seat device and to compare these data to an unassisted transfer in healthy young and ...

  • 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 ...

  • 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. ...