Acute effects of electrostimulation on upper limb spasticity and association with respiratory variables

Abstract

Introduction: Functional electrical stimulation (FES) is a valuable resource in the treatment of spastic patterns. Objectives: Evaluate the acute effect of FES on physical and functional variables of the spastic upper limb and its association with respiratory variables. Methods: Nineteen patients received placebo intervention (on the sensory threshold) and FES (f=30 Hz, pulse width=0.3 ms, 30 min) in the spastic limb (secondary to stroke) on different days. Before the interventions, activities of daily living by the Barthel Index (BI), pulmonary function and respiratory muscle strength were evaluated. Before and after the interventions, sensory motor function by Fugl-Meyer Scale (FMS) and movement amplitude were evaluated. Results: FES increased shoulder abduction and internal rotation, elbow extension and FMS. The maximum expiratory pressure was related to BI and shoulder flexion. Conclusions: The application of FES improved physical and functional variables of the spastic limb, which were associated with expiratory muscle strength.