National Rehabilitation Hospital Limb Classification for Exercise, Research, and Clinical Trials in Post-Polio Patients

National Rehabilitation Hospital Limb Classification for Exercise, Research, and Clinical Trials in Post-Polio Patients

Although the exact cause of late-onset weakness in polio is still not completely understood and, in fact,
may represent the result of several processes acting separately or together, it is now becoming clear that
new muscle weakness in many persons may have a reversible or "treatable" component that responds well to certain types of exercise.

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