title: Quadriceps femoris muscle voluntary force and relaxation capacity in children with spastic diplegic cerebral palsy.
abstract: Isometric voluntary force production and relaxation capacity of the quadriceps femoris (QF) muscle was compared between 12 children with spastic diplegic cerebral palsy (CP) and healthy controls, age 10-11 years. Children with CP had less (p < .05) maximal voluntary-contraction force, voluntary activation, and rate of force development than controls. Visual reaction to contraction did not differ significantly in measured groups, whereas the reaction time to relaxation and halfrelaxation time were longer (p < .05) in children with CP. The authors concluded that in children with CP, the capacity for rapid voluntary force production and relaxation is reduced to a greater extent than isometric maximal force.
authors: Institute of Exercise Biology and Physiotherapy Estonian Center of Behavioral and Health Sciences, University of Tartu, Estonia.
authors: Karin
authors: K
authors: Tammik
authors: Mariann
authors: M
authors: Matlep
authors: Jaan
authors: J
authors: Ereline
authors: Helena
authors: H
authors: Gapeyeva
authors: Mati
authors: M
authors: Pääsuke
mesh_terms: D000886:Anthropometry; D016022:Case-Control Studies; D002547:Cerebral Palsy / Q000503:physiopathology*; D002648:Child; D015444:Exercise / Q000502:physiology; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D009126:Muscle Relaxation / Q000502:physiology*; D009128:Muscle Spasticity / Q000503:physiopathology; D018482:Muscle, Skeletal / Q000502:physiology*; D052097:Quadriceps Muscle / Q000502:physiology*