title: Changes in genioglossus muscle activity in obstructive sleep apnea patients with and without snore guard.
abstract: OBJECTIVE
  To study the effect of Snore Guard on the genioglossus (GG) muscle activity of obstructive sleep apnea (OSA) patients.
  
  
  METHODS
  Fifteen male patients with mild to severe OSA were diagnosed by overnight polysomnographic studies, and were reexamined after using Snore Guard for 2-6 months. The difference in GG muscle activity was then compared.
  
  
  RESULTS
  The overnight GG muscle activity decreased significantly with Snore Guard. The levels of GG muscle activity during awake quiet breath and obstructive sleep apnea were higher than in sleepstate quiet breath without Snore Guard, and significantly decreased with Snore Guard. The increase in GG muscle activity during sleepstate quiet breath with Snore Guard was not statistically significant. The fluctuating GG muscle activity without Snore Guard was effectively improved by treatment with the appliance.
  
  
  CONCLUSIONS
  The effect of Snore Guard on OSA patients is a mechanical enlargement of upper airway volume. The genioglossus muscle is passive during treatment.
authors: Department of Orthodontics, School of Stomatology, Beijing Medical University (BMU).
authors: Y
authors: Y
authors: Zhao
authors: X
authors: X
authors: Zeng
authors: M
authors: M
authors: Fu
authors: X
authors: X
authors: Huang
mesh_terms: D000328:Adult; D002940:Circadian Rhythm / Q000502:physiology; D004576:Electromyography; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000503:physiopathology*; D020247:Myofunctional Therapy / Q000295:instrumentation*; D017286:Polysomnography; D012119:Respiration; D012891:Sleep Apnea Syndromes / Q000503:physiopathology / Q000628:therapy*; D012894:Sleep Stages / Q000502:physiology; D012913:Snoring / Q000517:prevention & control*; D013223:Statistics as Topic; D014059:Tongue / Q000503:physiopathology*