Effect of an electric fan on sleep quality in hot overnight environments in young healthy adults

Not Applicable

Recruiting

• Conditions: thermoregulation; sleep disturbance; Neurological - Studies of the normal brain and nervous system; dehydration; thermal comfort; cognitive function; Public Health - Other public health

• Registration Number: ACTRN12624000538549
• Lead Sponsor: The University of Sydney

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2024-04-30
• Last Update Posted: 8 July 2024

Recruitment & Eligibility

• Status: Recruiting
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

1. Between the ages of 18-40 years
2. Able to understand the demands of the protocol, has had any questions answered and has voluntarily signed the participant consent form prior to any study procedures
3. Must have a usual sleep time before midnight, a self-reported sleep latency of 30min or less, and a usual waketime between 5am and 8am

Exclusion Criteria

1. Insomnia Severity Index score greater than or equal to 8, due to possible clinical insomnia
2. Pittsburgh Sleep Quality Index score <5
3. Noise Sensitivity as identified by Weinstein Noise Sensitivity Scale (WNSS), with a score greater than or equal to 5 in question 5 or 19
4. Reported sleep or circadian disorders
5. Taking any medication(s) known to affect sleep or thermoregulation
6. Mood disorders known to affect sleep, such as depression, anxiety and stress. Identified by greater than normal levels of Depression (greater than or equal to 5), Anxiety (greater than or equal to 3) and Stress (greater than or equal to 7) as indicated by DASS-21
7. Known cardiovascular or respiratory disease
8. Acute illness on study visit days
9. Neurodiversity (e.g., ADHD, autism)
10. Substance-abuse disorders
11. Type I or Type II Diabetes
12. Faecal incontinence or rectal prolapse
13. A contraindication to the telemetric temperature pill
a. Weigh less than 40kg
b. Intestinal disorders that can lead to the obstruction of the digestive
tract, including diverticula
c. Motility disorder(s) of the gastrointestinal tract
d. Have undergone surgical procedures in the gastrointestinal tract or
having such medical history (esophagus, stomach, intestines)
e. Known swallowing disorders
f. Chron’s disease
g. Pacemaker or electro-medical implant
h. May undergo strong electromagnetic field during the period of use of
the system (MRI in particular)
i. Pregnant women

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Total sleep time[Nox A1 Polysomnography system. The sleep period will be defined as lights out time indicated by the participant until waking the next morning. Sleep time will be calculated as the time spent asleep during the sleep period. Total sleep time will be measured in all trials, including habituation and experimental trials.<br><br>The Nox A1 will be set to start recording at 8:30pm, and will record data continuously for 11 hours until 7:30am. <br><br>During the experimental trials, this will record data for the entire period of fan use. <br>The same time period will be captured during habituation trials, where participants are sleeping in thermoneutral conditions without a fan. ]