Abstract
Strokes cause the main neurological impairments in adults around the world. They can result in neuromotor and cognitive deficits. Among the neuromotor deficits there is spasticity; this affects the planning of movements and posture control. The postural control system is essential for functional independence in daily life activities and is, therefore, one of the main goals to achieve in rehabilitation programs. These programs have various therapeutic elements aimed at providing stimulus to the individual, which help them control their movements and stance more efficiently. Among these techniques is neuromuscular electrical stimulation, which contributes to decreasing spasticity and other benefits. When used for functional tasks it is called Functional Electrical Stimulation (FES). Objective: The purpose of this study was to verify the response of the postural control in two individuals with hemiparesis by stroke after the application of the FES over a short period time. Method: The experimental protocol had four phases. A: pre-FES; B: Immediately after the application of FES; C: 45 minutes after the application of FES; D: 90 minutes after application of FES. In each phase, the participants were positioned on a force platform and made three attempts to do the chosen task: touching the fingertip-to-floor test. Results: The software Matlab 7.0 provided the variable center-of-pressure velocities along the mediolateral (Vmx) and anteroposterior (Vmy) axes. In this way it was possible to see that, even when the participants showed a reduction in Vmx and Vmy, it was by less than 1%. Conclusion: This may indicate postural regulatory activity similar to before the application of FES, and even less postural regulatory activity when the centerof- pressure velocities were greater at the start, even 90 minutes after the application of FES.
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