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CompletedNCT00544752Updated Apr 14, 2011

Indoor Temperature and Sleep Apnea

An interventional study of 16 and indoor temperature of 20 degrees celcius in Obstructive Sleep Apnea, sponsored by Umeå University. Completed at 1 site in Sweden. Per ClinicalTrials.gov, last updated 2011-04-14.

Sponsored by Umeå University · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Sex
All
01

Study summary

The purpose of this study is to test whether different indoor temperature affect the frequency of sleep apnea.

02

Conditions studied

  • Obstructive Sleep Apnea

Keywords

  • sleep apnea syndromes, ambient indoor temperature
03

In context

Apnea

1,423 studies on the registry are indexed under Apnea; 160 are open to participants now.

This study's enrollment of 40 is below the median of 51 across 966 interventional studies indexed under Apnea.

Browse Apnea studies →

Lead sponsor

Umeå University is the lead sponsor of 263 studies on the registry; 60 are open to participants now.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Obstructive sleep apnea

Exclusion criteria

Exclusion Criteria:

  • Central sleep apnea
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
40 participants (actual)

Study arms

  • Experimental
    16

    indoor temperature of 16 degrees celcius

    Other: 16

  • Experimental
    20

    indoor temperature 20 degrees celcius

    Other: indoor temperature of 20 degrees celcius

  • Experimental
    24

    indoor temperature of 24 degrees celcius

    Other: indoor temperature of 24 degrees celcius

Interventions

  • Other16

    indoor temperature of 16 degrees celcius

  • Otherindoor temperature of 20 degrees celcius

    indoor temperature of 20 degrees celcius

  • Otherindoor temperature of 24 degrees celcius

    indoor temperature of 24 degrees celcius

06

What researchers measure

Primary outcomes

  1. Apnea hypopnea index, karolinska sleepiness scale

    Time frame: one night

Secondary outcomes

  1. Sleep stages, sleep efficiency

    Time frame: One night

07

Study locations

1 site
  • Dept of respiratory medicine
    Umeå, SE 901 85, Sweden
08

References and documents

Publications

  • Valham F, Sahlin C, Stenlund H, Franklin KA. Ambient temperature and obstructive sleep apnea: effects on sleep, sleep apnea, and morning alertness. Sleep. 2012 Apr 1;35(4):513-7. doi: 10.5665/sleep.1736. PubMed 22467989 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 14, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00544752
Lead sponsor
Umeå University
Collaborators
Swedish Heart Lung Foundation
First posted
Oct 16, 2007
Start date
Jan 2005
Primary completion
Dec 2010
Completion
Jan 2011
Last update
Apr 14, 2011

Study contacts

Karl A Franklin, MD, PhD
principal investigator · Dept Respiratory Medicine, University Hospital, Umeå
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2011. You cannot join it, but the record below documents what was studied.

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