References
- Koman L A, Smith B P, Shilt J S. Cerebral palsy. Lancet 2004; 363: 1619–1631
- Levin S. The cerebral palsies. Paediatric Developmental Therapy, S Levitt. Blackwell Scientific Publications, Boston 1986; 110–126
- Simons D G, Mense S. Understanding and measurement of muscle tone as related to clinical muscle pain. J Pain 1998; 75: 1–17
- Axelson H W, Hagbarth K E. Human motor control consequences of thixotropic changes in muscular short-range stiffness. J Physiol 2001; 15: 279–288
- Lakie M, Walsh E G, Wright G W. Resonance at the wrist demonstrated by the use of a torque motor: An instrumental analysis of muscle tone in man. J Physiol 1984; 353: 265–285
- Mayer N H. Clinicophysiologic concepts of spasticity and motor dysfunction in adults with an upper motorneuron lesion. Muscle Nerve 1997; 6: S1–S13
- Stanley F, Blair E, Alberman E. The classification of the cerebral palsies. Epidemiology and causal pathways, F Stanley, E Blair, E Alberman. MacKeith Press, London 2000; 14–16
- Damiano D L, Quinlivan J, Owen B F, Shaffrey M, Abel M F. Spasticity versus strength in cerebral palsy: Relationships among involuntary resistance, voluntary torque, and motor function. Eur J Neurol 2001; 8(Suppl. 5)40–49
- Raasch C C, Zajac F E, Ma B, Levine W S. Muscle coordination of maximum-speed pedaling. J Biomechanics 1997; 30: 595–602
- Neptune R R, Kautz S A. Knee joint loading in forward versus backward pedaling: Implications for rehabilitation strategies. Clin Biomechanics 2000; 15: 528–535
- Brown D A, Nagpal S, Sam Chi. Limb-loaded cycling program for locomotor intervention following stroke. Phys Ther 2005; 85: 159–168
- Brown D A, Kautz S A, Dairaghi C A. Muscle activity adapts to anti-gravity posture during pedalling in persons with post-stroke hemiplegia. Brain 1997; 120: 825–837
- Raasch C C, Zajac F E. Locomotor strategy for pedaling: Muscle groups and biomechanical functions. J Neurophysiol 1999; 81: 515–525
- Ting L H, Kautz S A, Brown D A, Zajac F E. 1999. Phase reversal of biomechanical function pairs and muscle activity in backward pedaling. J Neurophysiol 1999; 81: 544–551
- King E M, Gooch J L, Howell G H, Peters M L, Bloswick D S, Brown D R. Evaluation of the hip-extensor tricycle in improving gait in children with cerebral palsy. Develop Med Child Neurol 1993; 35: 1048–1054
- Kaplan S L. Cycling patterns in children with and without cerebral palsy. Develop Med Child Neurol 1995; 37: 620–630
- Jones J, McLaughlin J F. Mechanical efficiency of children with spastic cerebral palsy. Develop Med Child Neurol 1993; 35: 614–620
- Myklebust B M, Gottlieb G L, Agarwal G C. Stretch reflexes of the normal infant. Develop Med Child Neurol 1986; 28: 440–449
- Palisano R, Rosenbaum P, Walter S, Russell D, Wood E, Galuppi B. Development and reliability of a system to classify gross motor function in children with cerebral palsy. Develop Med Child Neurol 1997; 39: 214–223
- Rosenbaum P L, Walter S D, Hanna S E, Palisano R J, Russell D J, Raina P, Wood E, Bartlett D J, Galuppi B E. Prognosis for gross motor function in cerebral palsy, creation of motor development curves. J Am Med Assoc (JAMA) 2002; 228(11)1357–1363
- Bohannon R W, Smith M B. Interrater reliability of a modified Ashworth scale of muscle spasticity. Phys Ther 1987; 67: 206–207
- Snow B J, Tsui J K, Bhatt M H, Varelas M, Hashimoto S A, Calne D B. Treatment of spasticity with botulinum toxin: A double blind study. Ann Neurol 1990; 28: 512–515
- Damiano D L, Quinlivan J M, Owen B F, Payne P, Nelson K C, Abel M F. What does the Ashworth scale really measure and are instrumented measures more valid and precise?. Develop Med Child Neurol 2002; 44: 112–118
- Sherwood A M, Graves D E, Priebe M M. Altered motor control and spasticity after spinal cord injury: Subjective and objective assessment. J Rehabil Res Develop 2000; 37: 41–52
- Brashear A, Zafonte R, Corcoran M, Galvez-Jimenez N, Gracies J M, Gordon M F, McAfee A, Ruffing K, Thompson B, Williams M, Lee C H, Turkel C. Inter- and intra-rater reliability of the Ashworth Scale and the Disability Assessment Scale in patients with upper-limb poststroke spasticity. Arch Phys Med Rehabil 2002; 83(10)1349–1354
- Stevenson R D. Measurement of growth in children with developmental disability. Develop Med Child Neurol 1996; 38: 855–860
- Lovell W W, Winter R B. Lovell and Winter's Pediatric Orthopaedics. 3rd ed, R T Morrissy. Lippincot Company, Philadelphia 1990; 781
- Kao P C, Ferris D P. The effect of movement frequency on interlimb coupling during recumbent stepping. Motor Control 2005; 9: 144–163
- Kautz S A, Patten C. Interlimb influences on paretic leg function in poststroke hemiparesis. J Neurophysiol 2005; 93: 2460–2473
- Ting L H, Raasch C C, Brown D A, Kautz S A, Zajac F E. Sensorimotor state of the contralateral leg affects ipsilateral muscle coordination of pedaling. J Neurophysiol 1998; 80: 1341–1351
- Lieber R L, Runesson E, Einarsson F, Frieden J. Inferior mechanical properties of spastic muscle bundles due to hypertrophic but compromised extracellular matrix material. Muscle Nerve 2003; 28(4)464–471
- Lieber R L, Steinman S, Barash I A, Chambers H. Structural and functional changes in spastic skeletal muscle. Muscle Nerve 2004; 29(5)615–627
- Booth C M, Cortina-Borja M JF, Theologis T N. Collagen accumulation in muscles of children with cerebral palsy and correlation with severity of spasticity. Develop Med Child Neurol 2001; 43: 314–320
- Palisano R J, Hanna S E, Rosenbaum P L, Russell D J, Walter S D, Wood E P, Raina P S, Galuppi B E. Validation of a model of gross motor function for children with cerebral palsy. Phys Ther 2000; 80: 974–985
- Russell D J, Avery L M, Rosenbaum P L, Raina P S, Walter S D, Palisano R J. Improved scaling of the gross motor function measure for children with cerebral palsy: Evidence of reliability and validity. Phys Ther 2000; 80: 873–885