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(Anterior cruciate ligament) AND (transcranial magnetic stimulation)

Sarah H Ward, Alan Pearce, Kim L Bennell, Brian Peitrosimone, Adam L Bryant
BACKGROUND: Altered quadriceps corticomotor excitability has been demonstrated following anterior cruciate ligament (ACL) injury and reconstruction, however only the single joint vasti muscles have been assessed. There is no current data on rectus femoris corticomotor excitability following ACL injury, the biarticular quadriceps muscle also critical for force attenuation and locomotion. The purpose of this study was to examine rectus femoris corticomotor excitability, intracortical inhibition and cortical motor representation in individuals with and without an ACL injury...
August 2016: Knee
Brian G Pietrosimone, Adam S Lepley, Hayley M Ericksen, Amy Clements, David H Sohn, Phillip A Gribble
CONTEXT: Neuromuscular dysfunction is common after anterior cruciate ligament reconstruction (ACL-R). However, little is known about quadriceps spinal-reflex and descending corticomotor excitability after ACL-R. Understanding the effects of ACL-R on spinal-reflex and corticomotor excitability will help elucidate the origins of neuromuscular dysfunction. OBJECTIVE: To determine whether spinal-reflex excitability and corticomotor excitability differed between the injured and uninjured limbs of patients with unilateral ACL-R and between these limbs and the matched limbs of healthy participants...
June 2015: Journal of Athletic Training
Brian G Pietrosimone, Adam S Lepley, Hayley M Ericksen, Phillip A Gribble, Jason Levine
BACKGROUND: Disability is common in a proportion of patients after anterior cruciate ligament reconstruction (ACL-R). Neuromuscular quadriceps deficits are a hallmark impairment after ACL-R, yet the link between muscle function and disability is not understood. PURPOSES: To evaluate the ability of quadriceps strength and cortical excitability to predict self-reported disability in patients with ACL-R. METHODS: Fifteen participants with a history of ACL-R (11 female, 4 male; 172 ± 9...
February 2013: Journal of Sport Rehabilitation
Ashley Stern, Chris Kuenze, Daniel Herman, Lindsay D Sauer, Joseph M Hart
CONTEXT: Central and peripheral muscle fatigue during exercise may exacerbate neuromuscular factors that increase risk for noncontact anterior cruciate ligament injury. OBJECTIVE: To compare lower extremity motor-evoked potentials (MEPs), muscle strength, and electromyography (EMG) activation after an exercise protocol. DESIGN: Pretest, posttest group comparison. SETTING: University laboratory. PARTICIPANTS: 34 healthy volunteers (17 female, age = 21...
August 2012: Journal of Sport Rehabilitation
Martin E Héroux, François Tremblay
In the present report, we investigated changes in corticomotor excitability associated with unilateral knee dysfunction secondary to anterior cruciate ligament (ACL) injury. Ten participants, each with a previous history of unilateral ACL injury (median time post-injury 22 months) and eight healthy controls underwent transcranial magnetic stimulation (TMS) to assess excitability of the lower limb motor representation. Resting motor thresholds (RMTs) and stimulus response curves were measured at rest, while amplitude of motor evoked potentials and silent period duration were measured during active contraction...
September 2006: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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