title: Increased muscle activation following motor imagery during the rehabilitation of the anterior cruciate ligament.
abstract: Motor imagery (MI) is the mental representation of an action without any concomitant movement. MI has been used frequently after peripheral injuries to decrease pain and facilitate rehabilitation. However, little is known about the effects of MI on muscle activation underlying the motor recovery. This study aimed to assess the therapeutic effects of MI on the activation of lower limb muscles, as well as on the time course of functional recovery and pain after surgery of the anterior cruciate ligament (ACL). Twelve patients with a torn ACL were randomly assigned to a MI or control group, who both received a series of physiotherapy. Electromyographic activity of the quadriceps, pain, anthropometrical data, and lower limb motor ability were measured throughout a 12-session therapy. The data provided evidence that MI elicited greater muscle activation, even though imagery practice did not result in pain decrease. Muscle activation increase might originate from a redistribution of the central neuronal activity, as there was no anthropometric change in lower limb muscles after imagery practice. This study confirmed the effectiveness of integrating MI in a rehabilitation process by facilitating muscular properties recovery following motor impairment. MI may thus be considered a reliable adjunct therapy to help injured patients to recover motor functions after reconstructive surgery of ACL.
authors: Applied Clinical Neuroscience, Neurology Research Group, Department of Medicine, Centre for Brain Research, University of Auckland, New Zealand.
authors: Florent
authors: F
authors: Lebon
authors: Aymeric
authors: A
authors: Guillot
authors: Christian
authors: C
authors: Collet
mesh_terms: D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000503:physiopathology* / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries; D004576:Electromyography; D005260:Female; D006801:Humans; D019018:Imagery, Psychotherapy / Q000379:methods*; D007869:Leg Injuries / Q000534:rehabilitation* / Q000601:surgery; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D053580:Muscle Strength / Q000502:physiology; D059408:Pain Management / Q000379:methods; D016059:Range of Motion, Articular / Q000502:physiology; D020127:Recovery of Function / Q000502:physiology; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D055815:Young Adult