• Respir Physiol Neurobiol · May 2004

    Comparative Study

    Tongue mechanical characteristics and genioglossus muscle EMG in obstructive sleep apnoea patients.

    • Marc B Blumen, Annie Perez de La Sota, Maria A Quera-Salva, Bruno Frachet, Frédéric Chabolle, and Frédéric Lofaso.
    • Head and Neck Surgery Department, Foch Teaching Hospital, Suresnes, France.
    • Respir Physiol Neurobiol. 2004 May 20;140(2):155-64.

    AbstractThe increased genioglossus muscle (GGm) activity seen in obstructive sleep apnoea syndrome (OSAS) may lead to increased fatigability or longer recovery time of the tongue. Maximal force, endurance, and recovery times of the tongue, electromyogram (EMG) absolute value, and EMG spectral analysis of the GGm obtained during submaximal contractions were compared in eight individuals without chronic snoring and eight OSAS patients. Endurance time values were not significantly different between the two groups (P = 0.40). Time to recovery of initial maximal force was significantly greater in the OSAS group (P = 0.01). Final EMG median frequency was significantly higher (P = 0.01) and the final low-frequency EMG component smaller in the OSAS patients (P = 0.02). Patients did not have changes in endurance time or fatigability but had longer recovery times and changes in spectral analysis variations. This functional investigation may be helpful in determining the presence of OSAS and the potential contribution of the tongue to pharyngeal obstruction.Copryright 2004 Elsevier B.V.

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