Sleep Restriction Then Total Sleep DeprivationNCT02130791
Phenotypic and Genotypic Markers of Performance Vulnerability to Sleep Loss
A study testing Sleep in people with Sleep Restriction Then Total Sleep Deprivation and Total Sleep Deprivation Then Sleep Restriction, run by University of Pennsylvania at 1 site in United States.
Trial summary
Insufficient sleep is common, affecting 20-40% of adults, and resulting from sleep disorders, medical conditions, work demands, stress/emotional distress, and social/domestic responsibilities. Read more about this study
- Who is it for?
- Ages 21 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Sleep Restriction Then Total Sleep Deprivation, Total Sleep Deprivation Then Sleep Restriction
- What is being tested?
- Sleep
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 170 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2010to Nov 2015
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 21 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- A total of N=110 adult subjects (aged 21-50 yr), N=55 females and N=55 males of all ethnicities, will be randomized to the 2 different experimental conditions. Subjects must also be comparable in terms of their homeostatic and circadian sleep-wake regulation parameters. In order to be eligible to participate, subjects must meet the following inclusion criteria:
- Age between 21 and 50 years (average age of our current protocols is 31 years)
- Body mass index (BMI) within 20.5% of normal
- Stable, normally-timed sleep-wake cycle as determined by interview, 2-week daily sleep log, and 2-week wrist actigraphic evidence, and defined by:
- Habitual nocturnal sleep duration between 6.5h and 8.5h
- Habitual morning awakening between 0600h and 0930h
Who cannot join
- 1. No evidence of habitual napping 2. No shift work, transmeridian travel or irregular sleep/wake routine in the past 60 days 3. No sleep disorder, determined by history, actigraph, pulse oximetry and PSG 4. No history of mania or psychosis 5. No current depression as determined by the Beck Depression Inventory 6. No alcohol or drug abuse in the past year based upon history and urine toxicology screen
Trial locations and contacts
1 site in 1 country.
United States1 site
Unit for Experimental Psychiatry, Sleep and Chronobiology Laboratory
Philadelphia, Pennsylvania, 19104
About this study
Insufficient sleep is common, affecting 20-40% of adults, and resulting from sleep disorders, medical conditions, work demands, stress/emotional distress, and social/domestic responsibilities. It produces significant social, financial and health-related costs, and it has increasingly become a major public health concern as population studies worldwide have found that reduced sleep duration is associated with increased risks of obesity, morbidity, and mortality. It is well established that sleep loss causes fatigue and sleepiness, as well as errors and accidents that are due to its adverse neurobehavioral effects on alertness, mood, and cognitive functions. However, there are substantial, trait-like differences among people in the extent to which they experience such neurobehavioral deficits when sleep deprived. Common genetic variations involved in sleep-wake, circadian, and cognitive regulation may underlie these large inter-individual differences in neurobehavioral vulnerability to sleep deprivation, though it remains unclear whether different types of sleep deprivation involve the same phenotypic responses and same genotypic contributors. This project will be the first large-scale investigation of markers of differential cognitive vulnerability to both acute total sleep loss and chronic partial sleep loss. It will identify individuals who are at significant risk for fatigue and severe impairments from sleep loss. A total of 110 healthy adults will undergo a 13-day laboratory protocol to thoroughly characterize their cognitive, psychological and physiological responses to two of the most common forms of sleep loss--acute total sleep deprivation (1 night of sleep loss) and chronic partial sleep deprivation (5 nights of sleep limited to 4 hr). The findings from this study will represent a critical first step toward tailoring appropriate follow-up interventions for sleep loss and its symptomatic relief by finding predictors of at-risk individuals who should avoid sleep loss whenever possible, and/or seek effective countermeasures. Whether or not markers of neurobehavioral vulnerability to sleep loss are identified, the results of the project will help inform public policies pertaining to the need for adequate sleep and for countermeasures for sleep loss, and also will further our understanding and management of vulnerability to excessive sleepiness due to common sleep and medical disorders.
- Conditions
- Sleep Restriction Then Total Sleep Deprivation, Total Sleep Deprivation Then Sleep Restriction
- Being tested
- Sleep
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SleepBehavioural
| Study group | Role | What they receive |
|---|---|---|
| PSD then TSD | Experimental | baseline sleep, five nights sleep restriction, four nights recovery sleep, one night total sleep deprivation, one night recovery sleep Receives: Behavioral: Sleep |
| TSD then PSD | Experimental | baseline sleep, one night total sleep deprivation, four nights recovery sleep, five nights sleep restriction, one night recovery sleep Receives: Behavioral: Sleep |
What is being measured
The primary outcome is the main question the study is designed to answer.
Psychomotor Vigilance Test
3, 10, or 20 minute simple, high-signal-load reaction time (RT)-based test invented by our group and designed to evaluate the ability to sustain attention and respond in a timely manner to salient signals
Measured: Completed every two hours during waking hours during each day of the study (14 days total) which includes days following baseline sleep, sleep restriction or sleep deprivation and recovery sleep
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 May 2014 (estimated)
- Study startOct 2010
- Primary completionNov 2015
- Study completionNov 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Sleep Restriction Then Total Sleep DeprivationStudies of the same condition, open and under way.
- More trials run by University of PennsylvaniaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 170 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Pennsylvania
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Namni Goel, PhD, Principal investigator, University of Pennsylvania
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02130791
- Sponsor's protocol ID
- 812523
- Status last verified
- Dec 2015
- First submitted
- 29 Apr 2014
- Last updated
- 2 Dec 2015
- Results posted
- No
- Data monitoring committee
- No
Publications
Spaeth AM, Dinges DF, Goel N. Objective Measurements of Energy Balance Are Associated With Sleep Architecture in Healthy Adults. Sleep. 2017 Jan 1;40(1):zsw018. doi: 10.1093/sleep/zsw018.
PubMed 28364451Spaeth AM, Dinges DF, Goel N. Sex and race differences in caloric intake during sleep restriction in healthy adults. Am J Clin Nutr. 2014 Aug;100(2):559-66. doi: 10.3945/ajcn.114.086579. Epub 2014 Jun 25.
PubMed 24965304
Study at a glance
From the registry record, last updated by the sponsor on 2 Dec 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phenotypic and Genotypic Markers of Performance Vulnerability to Sleep Loss
- ClinicalTrials.gov ID
- NCT02130791
- Acronym / sponsor ID
- 812523
- Conditions
- Sleep Restriction Then Total Sleep Deprivation, Total Sleep Deprivation Then Sleep Restriction
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 170 participants (actual)
- Lead sponsor
- University of PennsylvaniaUniversity, hospital or other
- Study start
- Oct 2010
- Primary completion
- Nov 2015 (actual)
- Study completion
- Nov 2015 (actual)
- First posted
- 5 May 2014 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Insufficient sleep is common, affecting 20-40% of adults, and resulting from sleep disorders, medical conditions, work demands, stress/emotional distress, and social/domestic responsibilities. It produces significant social, financial and health-related costs, and it has increasingly become a major public health concern as population studies worldwide have found that reduced sleep duration is associated with increased risks of obesity, morbidity, and mortality. It is well established that sleep loss causes fatigue and sleepiness, as well as errors and accidents that are due to its adverse neurobehavioral effects on alertness, mood, and cognitive functions. However, there are substantial, trait-like differences among people in the extent to which they experience such neurobehavioral deficits when sleep deprived. Common genetic variations involved in sleep-wake, circadian, and cognitive regulation may underlie these large inter-individual differences in neurobehavioral vulnerability to sleep deprivation, though it remains unclear whether different types of sleep deprivation involve the same phenotypic responses and same genotypic contributors. This project will be the first large-scale investigation of markers of differential cognitive vulnerability to both acute total sleep loss and chronic partial sleep loss. It will identify individuals who are at significant risk for fatigue and severe impairments from sleep loss. A total of 110 healthy adults will undergo a 13-day laboratory protocol to thoroughly characterize their cognitive, psychological and physiological responses to two of the most common forms of sleep loss--acute total sleep deprivation (1 night of sleep loss) and chronic partial sleep deprivation (5 nights of sleep limited to 4 hr). The findings from this study will represent a critical first step toward tailoring appropriate follow-up interventions for sleep loss and its symptomatic relief by finding predictors of at-risk individuals who should avoid sleep loss whenever possible, and/or seek effective countermeasures. Whether or not markers of neurobehavioral vulnerability to sleep loss are identified, the results of the project will help inform public policies pertaining to the need for adequate sleep and for countermeasures for sleep loss, and also will further our understanding and management of vulnerability to excessive sleepiness due to common sleep and medical disorders.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| PSD then TSD | Experimental | Behavioral: Sleepbaseline sleep, five nights sleep restriction, four nights recovery sleep, one night total sleep deprivation, one night recovery sleep |
| TSD then PSD | Experimental | Behavioral: Sleepbaseline sleep, one night total sleep deprivation, four nights recovery sleep, five nights sleep restriction, one night recovery sleep |
Who may qualify
- Ages
- 21 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- A total of N=110 adult subjects (aged 21-50 yr), N=55 females and N=55 males of all ethnicities, will be randomized to the 2 different experimental conditions. Subjects must also be comparable in terms of their homeostatic and circadian sleep-wake regulation parameters. In order to be eligible to participate, subjects must meet the following inclusion criteria:
Key exclusion criteria (1 listed)
- 1. No evidence of habitual napping 2. No shift work, transmeridian travel or irregular sleep/wake routine in the past 60 days 3. No sleep disorder, determined by history, actigraph, pulse oximetry and PSG 4. No history of mania or psychosis 5. No current depression as determined by the Beck Depression Inventory 6. No alcohol or drug abuse in the past year based upon history and urine toxicology screen
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Sleep | Behavioural | PSD then TSD, TSD then PSD |
Primary outcome
Psychomotor Vigilance Test
Time frame: Completed every two hours during waking hours during each day of the study (14 days total) which includes days following baseline sleep, sleep restriction or sleep deprivation and recovery sleep
3, 10, or 20 minute simple, high-signal-load reaction time (RT)-based test invented by our group and designed to evaluate the ability to sustain attention and respond in a timely manner to salient signals
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Dec 2015.
- Derived from this study: PubMed 28364451Spaeth AM, Dinges DF, Goel N. Objective Measurements of Energy Balance Are Associated With Sleep Architecture in Healthy Adults. Sleep. 2017 Jan 1;40(1):zsw018. doi: 10.1093/sleep/zsw018.
- Derived from this study: PubMed 24965304Spaeth AM, Dinges DF, Goel N. Sex and race differences in caloric intake during sleep restriction in healthy adults. Am J Clin Nutr. 2014 Aug;100(2):559-66. doi: 10.3945/ajcn.114.086579. Epub 2014 Jun 25.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Namni Goel, PhD principal investigator
University of Pennsylvania
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Sleep in people with Sleep Restriction Then Total Sleep Deprivation and Total Sleep Deprivation Then Sleep Restriction, run by University of Pennsylvania at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 2 Dec 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Psychomotor Vigilance Test (time frame: Completed every two hours during waking hours during each day of the study (14 days total) which includes days following baseline sleep, sleep restriction or sleep deprivation and recovery sleep). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02130791, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Dec 2015.