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|Title||The relationship between spasticity and muscle volume of the knee extensors in children with cerebral palsy.|
|Publication Type||Journal Article|
|Year of Publication||2012|
|Authors||Pierce SR, Prosser LA, Lee SCK, Lauer RT|
|Journal||Pediatr Phys Ther|
|Pagination||177-81; discussion 182|
|Date Published||2012 Summer|
|Keywords||Adolescent, Cerebral Palsy, Child, Female, Humans, Knee, Magnetic Resonance Imaging, Male, Muscle Spasticity, Muscle Strength, Muscle Strength Dynamometer, Muscle, Skeletal, Organ Size, Range of Motion, Articular, Reflex, Retrospective Studies|
PURPOSE: The purpose of this study was to examine the relationship between spasticity and muscle volume in children with cerebral palsy (CP), using isokinetic dynamometry and magnetic resonance imaging.
METHODS: A retrospective sample of 8 children with diplegic CP was analyzed. One set of 10 passive knee flexion movements was completed at a velocity of 180° per second with concurrent surface electromyography of the medial hamstrings (MH) and vastus lateralis (VL) to assess knee extensor spasticity. Magnetic resonance imaging was used to measure maximum cross-sectional area and muscle volume of the quadriceps femoris.
RESULTS: The quadriceps femoris muscle volume was positively correlated with MH reflex activity, VL reflex activity, MH/VL co-contraction, and peak knee extensor passive torque (P < .05).
CONCLUSION: The present findings suggest that higher levels of knee extensor muscle spasticity are associated with greater quadriceps muscle volume in children with spastic diplegic CP.
|Alternate Journal||Pediatr Phys Ther|
|PubMed Central ID||PMC3718076|
|Grant List||R03 NS048875 / NS / NINDS NIH HHS / United States |
R01 HD043859 / HD / NICHD NIH HHS / United States
R03-NS048875 / NS / NINDS NIH HHS / United States
L40 HD045169 / HD / NICHD NIH HHS / United States
R01-HD043859 / HD / NICHD NIH HHS / United States