ClinicalTrials.gg
CompletedNCT03913494SnooZeal-snoreUpdated Apr 6, 2021

Transoral Daytime Neuromuscular Electrical Stimulation in Patients With Simple Snoring

An interventional study of Transoral Neurostimulation Device (Snoozeal) in Sleep Apnea, Obstructive, Sleep Apnea and Sleep, sponsored by University of California, San Diego. Completed at 2 sites in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2021-04-06.

Sponsored by University of California, San Diego · Not applicable, Interventional, and Basic science

Phase
Not applicable
Study type
Interventional
Enrollment
48
Allocation
Not applicable
Ages
18 Years to 65 Years
Sex
All
01

Study summary

Sleep Disordered Breathing (SDB) is a spectrum of conditions spanning from Simple Snoring to Severe Sleep apnea. SDB has multiple underlying mechanisms. Some portion of patients have issues with upper airway dilator muscle control; and such patients may be amenable to upper airway muscle training exercises using neuromuscular stimulation techniques. The investigators and others have published on the topic of neuromyopathy in the upper airway, defining a subgroup of OSA patients who may be amenable to training exercises. Based on this background, the investigators seek to test the hypothesis that upper airway tongue muscle training using transoral surface neuromuscular electrical stimulation may have benefits to patients with Simple Snoring.

02

Conditions studied

  • Sleep Apnea, Obstructive
  • Sleep Apnea
  • Sleep
  • Snoring

Keywords

  • Upper Airway Conditioning
  • Snoring
  • Snore
  • Sleep
  • OSA
  • Sleep Apnea
  • Neurostimulation
03

In context

Sleep Apnea, Obstructive

2,240 studies on the registry are indexed under Sleep Apnea, Obstructive; 475 are open to participants now.

This study's enrollment of 48 is close to the median of 52 across 1,472 interventional studies indexed under Sleep Apnea, Obstructive.

Browse Sleep Apnea, Obstructive studies →

Lead sponsor

University of California, San Diego is the lead sponsor of 980 studies on the registry; 195 are open to participants now.

Of its 113 completed or terminated interventional studies of FDA-regulated products, 71 (63%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Confirmation of snoring: must have a live-in bed partner that reports ≥ 6 months history of habitual snoring (i.e. > 5 days per week)

Exclusion criteria

Exclusion Criteria:

  • AHI > 15/hr
  • > 35
  • Non-English speakers (due to necessity to complete questionnaires)
  • Inability to complete daily neuromuscular stimulation
  • Other sleep disorders
  • Tongue or lip piercing
  • Pacemaker of implanted medical electrical devices
  • Current or recent (within last 6 months) treatment for snoring or sleep apnea
  • Previous oral or pharyngeal surgery other than dental
  • Craniofacial skeletal or muscular abnormalities
  • History of driving or other accidents due to sleepiness or an Epworth score (ESS)> 18
  • Pregnant
  • Cardiac (other than hypertension), pulmonary, renal, neurologic, neuromuscular or hepatic disease
  • Medications with sedative or myorelaxant properties or effects on cardiac or pulmonary function
  • Substantial alcohol (>3oz/day) or use of illicit drugs
  • Psychiatric disorders (other than depression or anxiety)
  • Snoring less than 20% of total sleep time during baseline polysomnography
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
48 participants (actual)

Study arms

  • Experimental
    4 Week Snoozeal Use

    Participants will take the device home and be required to use it for 20 minutes morning and night every day for at least 4 weeks. The SnooZeal records usage time to allow assessment of compliance.

    Device: Transoral Neurostimulation Device (Snoozeal)

Interventions

  • DeviceTransoral Neurostimulation Device (Snoozeal)

    Use of the Transoral Neurostimulation Device for 20 minutes, morning and night, every day for at least 4 weeks.

06

What researchers measure

Primary outcomes

  1. NREM EMGgg

    Genioglossal muscle activity as measured by two 25 gauge needles each containing a Teflon-coated stainless steel recording wire (\<0.1 mm in diameter with \~1 mm at the tip bared of Teflon and bent to form a small hook) placed perorally 1.5-2 cm into the body of the genioglossus muscle.

    Time frame: 6 hours

  2. Change in percent total sleep time spent snoring

    Time spent snoring divided by total sleep time as determined by Polysomnogram

    Time frame: 6 hours

Secondary outcomes

  1. Sleep Quality

    A self-report questionnaire, titled the Pittsburgh Quality of Sleep Questionnaire (PSQI), asking several questions to determine quality of sleep over the past 1 month that will be scored and added together on a scale of 0-21.

    Time frame: 10 minutes

  2. Daytime Sleepiness

    A self-report questionnaire, titled the Epworth Sleepiness Scale (ESS), asking subjects to rate their probability of falling asleep during different situations on a scale of 0-3. Scores are added together to determine how sleepy the subject feels during the day on a scale of 0-24

    Time frame: 10 minutes

07

Study locations

2 sites
  • Altman Clinical and Translational Research Institute
    San Diego, California 92093-0990, United States
  • University of California San Diego
    San Diego, California 92121, United States
08

References and documents

Publications

  • Camacho M, Certal V, Abdullatif J, Zaghi S, Ruoff CM, Capasso R, Kushida CA. Myofunctional Therapy to Treat Obstructive Sleep Apnea: A Systematic Review and Meta-analysis. Sleep. 2015 May 1;38(5):669-75. doi: 10.5665/sleep.4652. PubMed 25348130 ↗
  • Camacho M, Guilleminault C, Wei JM, Song SA, Noller MW, Reckley LK, Fernandez-Salvador C, Zaghi S. Oropharyngeal and tongue exercises (myofunctional therapy) for snoring: a systematic review and meta-analysis. Eur Arch Otorhinolaryngol. 2018 Apr;275(4):849-855. doi: 10.1007/s00405-017-4848-5. Epub 2017 Dec 23. PubMed 29275425 ↗
  • Deary V, Ellis JG, Wilson JA, Coulter C, Barclay NL. Simple snoring: not quite so simple after all? Sleep Med Rev. 2014 Dec;18(6):453-62. doi: 10.1016/j.smrv.2014.04.006. Epub 2014 May 9. PubMed 24888523 ↗
  • Young T, Finn L, Hla KM, Morgan B, Palta M. Snoring as part of a dose-response relationship between sleep-disordered breathing and blood pressure. Sleep. 1996 Dec;19(10 Suppl):S202-5. doi: 10.1093/sleep/19.suppl_10.s202. PubMed 9085511 ↗
  • Wessolleck E, Bernd E, Dockter S, Lang S, Sama A, Stuck BA. Intraoral electrical muscle stimulation in the treatment of snoring. Somnologie (Berl). 2018;22(Suppl 2):47-52. doi: 10.1007/s11818-018-0179-z. Epub 2018 Sep 6. PubMed 30595662 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 6, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03913494
Responsible party
Robert L. Owens (Associate Physician, University of California, San Diego) — Principal investigator
First posted
Apr 12, 2019
Start date
Jul 30, 2019
Primary completion
Feb 20, 2020
Completion
Feb 20, 2020
Last update
Apr 6, 2021

Study contacts

Robert Owens, MD
principal investigator · UCSD

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2021. You cannot join it, but the record below documents what was studied.

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