Applying Stretch to Evoke Hyperreflexia in Spasticity Testing: Velocity vs. Acceleration.

ABSTRACT: In neurological diseases, muscles often become hyper-resistant to stretch due to hyperreflexia, an exaggerated stretch reflex response that is considered to primarily depend on the muscle's stretch velocity. However, there is still limited understanding of how different biomechanical triggers applied during clinical tests evoke these reflex responses. We examined the effect of imposing a rotation with increasing velocity vs. increasing acceleration on triceps surae muscle repsonse in children with spastic paresis (SP) and compared the responses to those measured in typically developing (TD) children. A motor-operated ankle manipulator was used to apply different bell-shaped movement profiles, with three levels of maximum velocity (70, 110, and 150°/s) and three levels of maximum accelerati

SUBMITTER: Sloot LH 

PROVIDER: S-EPMC7921693 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature