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Study identifier: NCT07466888 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Effects of Frequency Adjustment in Functional Electrical Stimulation on Genioglossus Muscle Activity

Condition: Obstructive Sleep Apnea (OSA) · Snoring  ·  Sponsor: Seoul National University Bundang Hospital

PhaseNA
Planned participants28
Who can joinAll sexes, 19 Years to no upper limit
Healthy volunteersYes

About this study

This single-group interventional study investigates the safety and physiologic effects of functional electrical stimulation (FES) applied to the tongue and submental muscles in adults at high risk for sleep apnea. Participants will receive five stimulation frequencies (15, 25, 35, 45, and 75 Hz) in randomized order during a single visit. Ultrasound and tongue pressure (IOPI) measurements, as well as subjective assessments of discomfort and perceived effects, will be conducted before, during, and after stimulation. The primary objective is to evaluate changes in muscle thickness, length, and tongue strength across different stimulation frequencies. Secondary objectives include assessing participant discomfort, safety, and subjective treatment effects.

This description comes directly from the study's public registry record.

Talk to the study team

Juseok Ryu, M.D., Ph.D.  ·  +82-31-787-7739  ·  jseok337@snu.ac.kr

Hyunjin KIM  ·  +82-10-9974-7152

Always discuss trial participation with your own doctor first.

Locations (1)

Seoul National University Bundang HospitalGyeonggi-do, Seongnam-si, South KoreaRecruiting

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Source record: clinicaltrials.gov/study/NCT07466888