Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Effects of Earplugs on Sleep and Sleep Apnea

This study has been completed.
Information provided by (Responsible Party):
Ronald D. Chervin, M.D., M.S., University of Michigan Identifier:
First received: February 3, 2010
Last updated: December 3, 2016
Last verified: December 2016
The main goal of this study is to assess whether use of earplugs has any effect on sleep, sleep apnea, and daytime sleepiness in individuals who snore.

Condition Intervention
Sleep Disordered Breathing
Other: Soft earplugs are worn during sleep study

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Outcomes Assessor)
Official Title: Effects of Earplugs on Sleep and Sleep Apnea

Resource links provided by NLM:

Further study details as provided by University of Michigan:

Primary Outcome Measures:
  • Sleep measures (rates of apneas and hypopneas, oxygen desaturation, arousals, sleep stages, respiratory cycle-related EEG changes [RCREC]) [ Time Frame: up to 2 years after the sleep study ]

Secondary Outcome Measures:
  • Subjective sleepiness measures (Stanford Sleepiness Scale) [ Time Frame: on awakening after the sleep study ]

Enrollment: 407
Study Start Date: November 2008
Study Completion Date: August 2012
Primary Completion Date: August 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Earplugs
Subjects randomized to this arm of the study will wear earplugs during their baseline sleep study (polysomnogram).
Other: Soft earplugs are worn during sleep study
Subjects are asked to wear earplugs when possible for 3-5 nights prior to their baseline sleep study. On the night of their sleep study they are randomized to either "wears earplugs" or "no earplugs" groups.
Other Name: Howard Leight (Sperian) Max-1/3303361 uncorded earplugs, NRR33, SNR 37dB
No Intervention: Comparison group
Subjects randomized to the comparison arm will not wear earplugs during their baseline sleep study.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Adults, ages 18 or older
  • Scheduled at the University of Michigan Sleep Disorders Center for a diagnostic polysomnogram to evaluate for sleep-disordered breathing

Exclusion Criteria:

  • Medical, psychiatric or other conditions that would interfere with interpretation of the results of the sleep studies or the subject's ability to complete the Stanford Sleepiness Scale
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01062854

United States, Michigan
University of Michigan Sleep Disorders Center
Ann Arbor, Michigan, United States, 48109
Sponsors and Collaborators
University of Michigan
Principal Investigator: Ronald D Chervin, MD, MS University of Michigan
  More Information

Responsible Party: Ronald D. Chervin, M.D., M.S., Michael S Aldrich Collegiate Professor of Sleep Medicine and Professor of Neurology, University of Michigan Identifier: NCT01062854     History of Changes
Other Study ID Numbers: HUM00023548
Study First Received: February 3, 2010
Last Updated: December 3, 2016

Keywords provided by University of Michigan:
snoring, sleep disordered breathing, polysomnography, sleep fragmentation

Additional relevant MeSH terms:
Respiratory Aspiration
Respiration Disorders
Respiratory Tract Diseases
Pathologic Processes processed this record on May 22, 2017