Browsing Physiotherapy Faculty Research, Publications and Presentations by Author "Kozey, John W"
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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/s00421-009-0994-9It 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 ... -
Changes in electromyographic activity of trunk muscles within the sub-acute phase for individuals deemed recovered from a low back injury
Butler, Heather L., Cheryl L. Hubley-Kozey, and John W. Kozey. "Changes in electromyographic activity of trunk muscles within the sub-acute phase for individuals deemed recovered from a low back injury." Journal of Electromyography and Kinesiology 23.2 (2013): 369-377. doi:10.1016/j.jelekin.2012.10.012Evidence indicates that previous low back injury (LBI) is a strong predictor for re-injury. The purpose of this study was to examine whether neuromuscular patterns remain altered in a LBI group who were deemed recovered. ... -
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.2009.09.018Objectives: 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.2008.09.010This 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 ... -
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.2007.10.004The 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 ...