Effects of Two Electrical Stimulation Frequencies in Thigh Muscle After Knee Surgery

Abstract The purpose of this study was to compare the effects of two protocols of electrical stimulation combined with voluntary contractions on the recovery of thigh muscles after anterior cruciate ligament (ACL) surgery. Ten sportsmen with a mean age of 26 yrs were randomly assigned into two group...

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Veröffentlicht in:International journal of sports medicine 2002-11, Vol.23 (8), p.604-609
Hauptverfasser: Rebai, H., Barra, V., Laborde, A., Bonny, J.-M., Poumarat, G., Coudert, J.
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container_end_page 609
container_issue 8
container_start_page 604
container_title International journal of sports medicine
container_volume 23
creator Rebai, H.
Barra, V.
Laborde, A.
Bonny, J.-M.
Poumarat, G.
Coudert, J.
description Abstract The purpose of this study was to compare the effects of two protocols of electrical stimulation combined with voluntary contractions on the recovery of thigh muscles after anterior cruciate ligament (ACL) surgery. Ten sportsmen with a mean age of 26 yrs were randomly assigned into two groups: a 80 Hz stimulated group (5 patients) and a 20 Hz stimulated group (5 patients). All patients received electrical stimulation of the quadriceps femoris, five days a week, for 12 weeks, and had a standard program of voluntary contractions. Muscle and fat volumes of the thigh were assessed using MRI before surgery and after 12 weeks of rehabilitation. Quadriceps and hamstring muscle strength were evaluated by isokinetic measurements. Twelve weeks after surgery, the quadriceps peak torque deficit in the operated limb with respect to the non operated limb at 180°/s and 240°/s was significantly (p < 0.05) less in the 20 Hz group than in the 80 Hz group. This difference was not confirmed when comparing the pre-surgery quadriceps peak torque of the operated limb with the post-surgery one. Subcutaneous fat volume was increased for the two groups at the post-surgery test. This increase was significantly (p < 0.05) greater for the 80 Hz group. Thigh muscle volume deficit was not significantly different between the two groups.
doi_str_mv 10.1055/s-2002-35525
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Ten sportsmen with a mean age of 26 yrs were randomly assigned into two groups: a 80 Hz stimulated group (5 patients) and a 20 Hz stimulated group (5 patients). All patients received electrical stimulation of the quadriceps femoris, five days a week, for 12 weeks, and had a standard program of voluntary contractions. Muscle and fat volumes of the thigh were assessed using MRI before surgery and after 12 weeks of rehabilitation. Quadriceps and hamstring muscle strength were evaluated by isokinetic measurements. Twelve weeks after surgery, the quadriceps peak torque deficit in the operated limb with respect to the non operated limb at 180°/s and 240°/s was significantly (p &lt; 0.05) less in the 20 Hz group than in the 80 Hz group. This difference was not confirmed when comparing the pre-surgery quadriceps peak torque of the operated limb with the post-surgery one. Subcutaneous fat volume was increased for the two groups at the post-surgery test. 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Orthopedic treatment</topic><topic>Electric Stimulation Therapy - methods</topic><topic>Humans</topic><topic>Knee Injuries - rehabilitation</topic><topic>Knee Injuries - surgery</topic><topic>Machine Learning</topic><topic>Magnetic Resonance Imaging</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Muscle, Skeletal - physiopathology</topic><topic>Orthopedics &amp; Biomechanics</topic><topic>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. 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subjects Adipose Tissue - physiopathology
Adult
Anterior Cruciate Ligament - surgery
Biological and medical sciences
Computer Science
Diseases of the osteoarticular system. Orthopedic treatment
Electric Stimulation Therapy - methods
Humans
Knee Injuries - rehabilitation
Knee Injuries - surgery
Machine Learning
Magnetic Resonance Imaging
Male
Medical sciences
Muscle, Skeletal - physiopathology
Orthopedics & Biomechanics
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Random Allocation
Recovery of Function
Signal and Image Processing
Thigh - physiopathology
Torque
title Effects of Two Electrical Stimulation Frequencies in Thigh Muscle After Knee Surgery
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