Archives of physical medicine and rehabilitation · 1999
Upper motor neuron lesions: their effect on muscle performance and appearance in stroke patients with minor motor impairment.
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Sunnerhagen K S, Svantesson U, Lönn L, Krotkiewski M, Grimby G
Аннотация
OBJECTIVE: To evaluate muscular performance and appearance in patients with prior stroke who were ambulatory.
DESIGN: Nonrandomized study.
SETTING: University hospital laboratory.
SUBJECTS: Sixteen persons (11 men, 5 women) with minor motor impairments, 6 to 24 months after stroke, were included. As reference, data were used from a population-based sample of 144 men and women.
MAIN OUTCOME MEASUREMENTS: Muscle performance was evaluated using a Kin-Com dynamometer in both the affected and the nonaffected leg. Peak isometric strength was measured at a 60 degree angle in both extension and flexion. Maximal isokinetic strength was measured at 60 degrees/sec and at 180 degrees/sec. Endurance was evaluated during isometric and dynamic knee extensions. Muscle biopsies were taken on nine patients and muscle tissue areas were determined with computed tomography.
RESULTS: The affected leg was weaker but not different in relative endurance compared with the nonaffected side. The performance of the nonaffected side was somewhat lower than that of a matched reference population. No major difference in fiber composition between the affected and nonaffected legs was noted, except for a lower degree of capillarization in the affected leg.
CONCLUSION: In well-functioning stroke patients with good motor performance, further muscle training that includes resistance exercise might be indicated.
DESIGN: Nonrandomized study.
SETTING: University hospital laboratory.
SUBJECTS: Sixteen persons (11 men, 5 women) with minor motor impairments, 6 to 24 months after stroke, were included. As reference, data were used from a population-based sample of 144 men and women.
MAIN OUTCOME MEASUREMENTS: Muscle performance was evaluated using a Kin-Com dynamometer in both the affected and the nonaffected leg. Peak isometric strength was measured at a 60 degree angle in both extension and flexion. Maximal isokinetic strength was measured at 60 degrees/sec and at 180 degrees/sec. Endurance was evaluated during isometric and dynamic knee extensions. Muscle biopsies were taken on nine patients and muscle tissue areas were determined with computed tomography.
RESULTS: The affected leg was weaker but not different in relative endurance compared with the nonaffected side. The performance of the nonaffected side was somewhat lower than that of a matched reference population. No major difference in fiber composition between the affected and nonaffected legs was noted, except for a lower degree of capillarization in the affected leg.
CONCLUSION: In well-functioning stroke patients with good motor performance, further muscle training that includes resistance exercise might be indicated.