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.
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.
Authors: A D Pandyan; M Gregoric; M P Barnes; D Wood; F Van Wijck; J Burridge; H Hermens; G R Johnson Journal: Disabil Rehabil Date: 2005 Jan 7-21 Impact factor: 3.033
Authors: M A Elliott; G A Walter; H Gulish; A S Sadi; D D Lawson; W Jaffe; E K Insko; J S Leigh; K Vandenborne Journal: MAGMA Date: 1997-06 Impact factor: 2.310
Authors: Tomasz Halski; Piotr Żmijewski; Paweł Cięszczyk; Barbara Nowak; Kuba Ptaszkowski; Lucyna Slupska; Robert Dymarek; Jakub Taradaj Journal: J Hum Kinet Date: 2015-01-12 Impact factor: 2.193