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Comparison of RT in Patients With Sleep Apnea With and Without Complaints of Daytime Sleepiness

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified March 2012 by Federal University of São Paulo.
Recruitment status was:  Recruiting
Information provided by (Responsible Party):
Marco Tulio de Mello, Federal University of São Paulo Identifier:
First received: March 21, 2012
Last updated: March 24, 2012
Last verified: March 2012
Not all patients with the Obstructive Sleep Apnea Syndrome (OSAS), mostly mild, have excessive daytime sleepiness. Sleep fragmentation provides the performance decrease with increasing reaction time to external stimuli and correlates with excessive sleepiness. So, the study aims at assessing the effect of sleep fragmentation on the Reaction Time and it`s maintenance in patients with OSAS compared with healthy, to better clarify were patients with and without somnolence differ. For that, will be recruited 30 male volunteers aged between 20 and 50 year old to participate in the study. They will be distributed in three groups: "CONTROL" (without symptoms of sleepiness and apnea and hypopnea index (AHI) less than 5), "SS" (with AHI between 5 and 15 without symptoms of somnolence) and group "CS" (with AHI between 5 and 15 with symptoms of somnolence). The groups will undergo a polysomnography and subsequently, the Test and Maintenance of Wakefulness and PVT Battery Tests. The reaction time will be compared, as well as the ability to keep the reaction time over time between groups to see whether there is a difference between the motor performance throughout the day and the perception of sleepiness.

Sleep Apnea

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Cross-Sectional
Official Title: Behavior of Psychomotor Vigilance Task Performance in Subjects With Obstructive Sleep Apnea With and Without Complaints of Daytime Sleepiness

Resource links provided by NLM:

Further study details as provided by Federal University of São Paulo:

Estimated Enrollment: 30
Study Start Date: October 2011
Estimated Study Completion Date: March 2013
Primary Completion Date: March 2012 (Final data collection date for primary outcome measure)
Control group
Apnea without complaints group
SAOS Group


Ages Eligible for Study:   20 Years to 45 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Man, ages between 20 and 45 years with and without drowsiness and no sleep disturbances checked before the study

Inclusion Criteria:

  • Man
  • Aged between 20 and 45 years old
  • BMI between 20-30

Exclusion Criteria:

  • Cigarette Smoke
  • Drug intake
  • Other sleep disturbances
  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: NCT01562262

Contact: Amaury T Barreto, Bsc 551155720177

Federal University of São Paulo Recruiting
São Paulo, SP, Brazil, 04020-060
Contact: Gloria Silva, Secretariat    551155720177   
Principal Investigator: Marco Tulio de Mello, PhD         
Sponsors and Collaborators
Federal University of São Paulo
  More Information

Responsible Party: Marco Tulio de Mello, PhD Professor, Federal University of São Paulo Identifier: NCT01562262     History of Changes
Other Study ID Numbers: CEP1122/11
Study First Received: March 21, 2012
Last Updated: March 24, 2012

Keywords provided by Federal University of São Paulo:
Reaction Time

Additional relevant MeSH terms:
Sleep Apnea Syndromes
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms, Respiratory
Signs and Symptoms
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Nervous System Diseases processed this record on April 28, 2017