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CompletedNCT01355419Updated May 12, 2015Results posted

Sleep Schedules Modifications in Sleep Apnea Patients Treated by nCPAP

An observational study in Obstructive Sleep Apnea, sponsored by Centre Hospitalier Universitaire Saint Pierre. Completed at 1 site in Belgium. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-05-12.

Sponsored by Centre Hospitalier Universitaire Saint Pierre · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
150
Ages
18 Years and older
Sex
All
01

Study summary

In Obstructive sleep apnea (OSA) patients, sleep is disrupted and sleep quality is very poor. The investigators can suppose that with continuous positive airway pressure (CPAP) therapy, there is an improvement in sleep quality, such that patients need less sleep to be fit. Sleep schedules on mid term periods in OSA patients under CPAP therapy has not been studied. The investigators have planned to study sleep schemes before and after CPAP therapy in moderate to severe sleepy OSA patients.

Read the detailed description

In Obstructive sleep apnea (OSA) patients, sleep is disrupted and sleep quality is very poor. The investigators can suppose that with CPAP therapy, there is an improvement in sleep quality, such that patients need less sleep to be fit. Patients often report this fact, but it has not been objectivated.

Sleep schedules on mid term periods in OSA patients under CPAP therapy has not been studied. The investigators have planned to study sleep schemes before and after CPAP therapy in moderate to severe sleepy OSA patients. Sleep schemes and physical activity will be studied with actigraphy.

Study Design : prospective study. Number of patients supposed to be studied: 190

Methods:

Patients Ø OSA patients assessed by polysomnography, showing apnea-hypopnea index > 20, and Epworth Sleepiness Scale Score(ESS) >10 Ø Indication of CPAP therapy

Initial Evaluation :

  • Phase 1

    • ESS
    • BMI
    • Questionnaire : Nottingham health profile
    • Comorbidities -medical therapy
    • Smoking/alcohol Consumption
    • Then, we give an Actigraph (Body Media Sense WearÒ) to the patients, that he has to wear during 7 complete days
  • Phase 2

    • Actigraphy report
    • Start of CPAP therapy(pressure adjusted according to autoCPAP device report after minimum one night)

Second Evaluation, after 3 months under CPAP:

  • Phase 1

    § ESS

  • BMI
  • CPAP observance report to calculate mean use/day
  • Questionnaire : Nottingham health profile
  • Actigraph (Body Media Sense WearÒ) to the patients, that he has to wear during 7 complete days
  • Phase 2: after 1 week under CPAP and actigraphy

    • Actigraphy report
    • CPAP observance report
    • CPAP Tolerance Questionnaire Ø
02

Conditions studied

  • Obstructive Sleep Apnea

Keywords

  • Obstructive sleep apnea
  • CPAP
  • actigraphy
  • sleep
  • physical activity
03

In context

Apnea

1,422 studies on the registry are indexed under Apnea; 159 are open to participants now.

This study's enrollment of 150 is above the median of 106 across 386 observational studies indexed under Apnea.

Browse Apnea studies →

Lead sponsor

Centre Hospitalier Universitaire Saint Pierre is the lead sponsor of 78 studies on the registry; 12 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Moderate to severe OSA

Inclusion criteria

  • Moderate to severe OSA
  • sleepy (sleepiness assessed by Epworth Sleepiness Scale)
  • indication for CPAP therapy

Exclusion criteria

Exclusion Criteria:

  • narcolepsy
  • age \< 18
  • non sleepy Moderate to severe OSA
  • no CPAP treatment required
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
150 participants (actual)

Groups and cohorts

  • obstructive sleep apnea, CPAP

    moderate to severe obstructive sleep apnea requiring CPAP therapy

06

What researchers measure

Primary outcomes

  1. Change in Total Sleep Time Before and After CPAP Therapy in Obstructive Sleep Apnea Patients

    change in Total sleep time before and after CPAP therapy in obstructive sleep apnea patients, assessed by actigraphy

    Time frame: baseline and at 3 months

Secondary outcomes

  1. Change in Physical Activity (Number of Steps/Day)Before and After CPAP Therapy in OSA Patients

    Change in Physical activity (number of steps/day)before and after CPAP therapy in OSA patientsevaluated by actigraphy

    Time frame: baseline and at 3 months

07

Results

Posted May 12, 2015

Participant flow

Participant flow — Overall Study
MilestoneObstructive Sleep Apnea, CPAP
Started150
Completed142
Not completed8

Outcome measures

PrimaryChange in Total Sleep Time Before and After CPAP Therapy in Obstructive Sleep Apnea Patients

change in Total sleep time before and after CPAP therapy in obstructive sleep apnea patients, assessed by actigraphy

Time frame:
baseline and at 3 months
Reported as:
Mean · minutes
Change in Total Sleep Time Before and After CPAP Therapy in Obstructive Sleep Apnea Patients
minutesObstructive Sleep Apnea, CPAP
Change in Total Sleep Time Before and After CPAP Therapy in Obstructive Sleep Apnea Patients29 ± 17
Statistical analysis
  • Obstructive Sleep Apnea, CPAP · t-test, 2 sided · p = <0.05
SecondaryChange in Physical Activity (Number of Steps/Day)Before and After CPAP Therapy in OSA Patients

Change in Physical activity (number of steps/day)before and after CPAP therapy in OSA patientsevaluated by actigraphy

Time frame:
baseline and at 3 months
Reported as:
Mean · steps
Change in Physical Activity (Number of Steps/Day)Before and After CPAP Therapy in OSA Patients
stepsObstructive Sleep Apnea, CPAP
Change in Physical Activity (Number of Steps/Day)Before and After CPAP Therapy in OSA Patients369 ± 157
Statistical analysis
  • Obstructive Sleep Apnea, CPAP · Regression, Linear · p = <0.05 (Multiple regression modelling was used to determine whether actigraphic or polysomnographic data were predictors for physical activity, independently from age and BMI, stepwise forward selection of variables was performed.)

Adverse events

Collected over 4 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Obstructive Sleep Apnea, CPAP—0/142 (0%)0/142 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Obstructive Sleep Apnea, CPAP
Mean51 ± 10
Age, Categorical
Age, Categorical(Participants)Obstructive Sleep Apnea, CPAP
<=18 years0
Between 18 and 65 years150
>=65 years0
Sex: Female, Male
Sex: Female, Male(Participants)Obstructive Sleep Apnea, CPAP
Female60
Male90
Region of Enrollment
Region of Enrollment(participants)Obstructive Sleep Apnea, CPAP
Belgium150
08

Study locations

1 site
  • CHU St Pierre
    Brussels, 1000, Belgium
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 12, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01355419
Lead sponsor
Centre Hospitalier Universitaire Saint Pierre
Responsible party
Marie Bruyneel (chef de clinique adjoint, Centre Hospitalier Universitaire Saint Pierre) — Principal investigator
First posted
May 18, 2011
Start date
Aug 2010
Primary completion
Aug 2014
Completion
Aug 2014
Results posted
May 12, 2015
Last update
May 12, 2015

Study contacts

Marie Bruyneel, MD
principal investigator · CHU St Pierre

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2015. You cannot join it, but the record below documents what was studied.

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