Effect of Neuromuscular Electrical Stimulation on Labial and Lingual Weakness: A Single-Case Preexperimental Study

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This study explored the effect of facial and submental neuromuscular electrical stimulation (NMES) in individuals with lingual, labial and buccal weakness.


An ABC/ACB design was used. Two male participants who acquired cerebrovascular accident (60 years) involved in this study. Both engaged in 2 treatment phases. One phase included performing an oral motor exercise program in conjunction with the NMES. Second phase included performing only oral motor exercise program.


Submental NMES did not have any effect on lingual strength. However, facial NMES had positive effect on labial strength in the 2 participants.

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