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Design of a device to exercise hip extensor muscles in children with cerebral palsy.

, , , , and . Assist Technol, 5 (2): 119--129 (1993)

Abstract

Children with cerebral palsy (CP) often have weak hip extensor muscles and gait-related difficulties. Current therapeutic techniques do not provide sufficient exercise for this muscle group. In addition to calisthenics, therapists use a traditional tricycle to strengthen leg muscles, yet the mechanics of traditional tricycles are not effective in exercising hip extensor muscles. A new therapeutic tricycle was designed specifically to exercise the hip extensor muscles, and tests compared the traditional tricycle to the new hip extensor tricycle in effectiveness of promoting hip extensor activity in two subjects without CP. The tests demonstrated that the hip extensor tricycle was more effective in promoting hip extensor activity. Tests are underway to investigate the effect of the hip extensor tricycle in improving hip extensor strength and gait in patients with cerebral palsy. This paper describes the design of the hip extensor tricycle and a preliminary investigation of its effectiveness.

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