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Sleep DisturbanceSLEEP-INNCT04286451

Effect of Sleep Restriction on Adipose Tissue and Skeletal Muscle Insulin Sensitivity

A study testing Sleep Restriction and Habitual Sleep in people with Sleep Disturbance and Postmenopausal Symptoms, run by Pennington Biomedical Research Center at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Inadequate sleep is an independent risk factor for metabolic abnormalities (such as obesity, insulin resistance, and hyperglycemia). Women report sleep disruption during the menopause transition (perimenopause) and into the postmenopausal years. Read more about this study

Who is it for?
Any age, women onlyHealthy volunteers can take part
What is being tested?
Sleep Restriction and Habitual Sleep
Could I receive a placebo?
No, everyone receives an active treatment
How many people
14 participants
Where
1 siteUnited States
Study dates
28 Jul 2020to 13 Apr 2022
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 Any age
  • Women only
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • Body mass index (BMI) 25-35 kg/m2 (inclusive)
  • Postmenopausal (self-reported absence of menstrual cycle for 1-year)
  • Within 10 years of final menstrual cycle
  • Self-reported nocturnal time in bed of ≥6.5 hours per night (for ≥5 nights during a usual week)
  • Willing to not take naps or engage in moderate-to-vigorous physical activity/exercise during both sleep conditions
  • Willing to consume only the meals provided during both sleep conditions
  • Willing to have adipose tissue and skeletal muscle biopsies
  • Willing to have blood, as well as adipose and muscle tissue stored for future use

Who cannot join

  • Unstable weight in the last 3 months [gain or loss ≥5% of body weight]
  • History of clinically diagnosed diabetes or a fasting blood glucose >126 mg/dL
  • History of polycystic ovary syndrome (PCOS)
  • Currently taking antihypertension medication known to affect adipose tissue and skeletal muscle metabolism (e.g., diuretics may be allowed)
  • Chronic use of systemic glucocorticoids
  • Chronic use of atypical antipsychotic or bipolar medications
Show all 17Show fewer
  • Initiation of antidepressant medication within the last 3 months
  • Previous bariatric surgery (or other surgeries) for obesity or weight loss
  • Chronic use of prescription or 'effective' over-the-counter medications affecting sleep, circadian rhythms, or glucose metabolism †
  • Chronic use of hormone replacement therapy
  • History of clinically diagnosed sleep apnea
  • Shift workers (e.g., individuals awake or working between Midnight and 5AM)
  • Inability to spend 5 nights at Pennington Biomedical
  • Unwilling to eat only the food and drink provided by study staff while in the study
  • Unwilling to maintain a consistent and prescribed sleep schedule while in the study
  • Unwilling to maintain a consistent eating schedule while in the study
  • Sporadic use of certain medications is fine (however, enrollment will depend on a case-by-case basis). If taking sporadically, women should not be taking the medication for 1-month prior to the first Run-In period.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Pennington Biomedical Research Center

    Baton Rouge, Louisiana, 70808

Other trials in United States

About this study

Inadequate sleep is an independent risk factor for metabolic abnormalities (such as obesity, insulin resistance, and hyperglycemia). Women report sleep disruption during the menopause transition (perimenopause) and into the postmenopausal years. Sleep disruption is one of the primary reasons why midlife women seek medical care, with up to 60% reporting significant sleep disturbances (e.g., trouble falling asleep, early morning waking, and hot flashes/night sweats). Despite the majority of women experiencing sleep disruption, no study has investigated the molecular mechanisms linking sleep disruption and the changes in metabolism that coincide with menopause.

Read the detailed description

The investigators will conduct a randomized, crossover trial investigating the effect of sleep restriction compared to habitual sleep on adipose tissue and skeletal muscle insulin sensitivity in vivo and ex vivo. The investigators will randomize up to 10 healthy postmenopausal women with overweight/obesity and ≥6.5 hours of self-reported habitual nightly sleep to 4 nights of each sleep condition (sleep restriction and habitual sleep). After the fourth night of each sleep condition, the investigators will administer a two-step hyperinsulinemic-euglycemic clamp and collect skeletal muscle and adipose tissue samples prior to insulin infusion.

The overarching hypothesis is that sleep restriction will reduce skeletal muscle and adipose tissue insulin sensitivity compared to habitual sleep.

Being tested
Sleep Restriction, Habitual Sleep
Medical subject headings
Parasomnias, Insulin Resistance

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Sleep RestrictionBehavioural

    Women will be undergo 4 nights of sleep restriction.

  • Habitual SleepBehavioural

    Women will be undergo 4 nights of habitual sleep.

Study groups in NCT04286451
Study groupRoleWhat they receive
Sleep RestrictionExperimentalWomen will undergo 4 nights of sleep restriction treatment.
Receives: Behavioral: Sleep Restriction
Habitual SleepExperimentalWomen will undergo 4 nights of habitual sleep treatment.
Receives: Behavioral: Habitual Sleep

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Glucose infusion rate (via 2-step hyperinsulinemic-euglycemic clamp) (in vivo)

    Insulin sensitivity by a 2-step hyperinsulinemic euglycemic clamp is performed at the end sleep conditions.

    Measured: 4 days

Secondary outcomes (9)
  1. Adipose tissue insulin sensitivity (via free fatty acid area-under-the-curve during the low-dose clamp) (in vivo)

    During the low-dose insulin portion of the hyperinsulinemic-euglycemic clamp, free fatty acids will be samples across a 3-hour period to quantify a surrogate measure of adipose tissue insulin sensitivity in vivo.

    Measured: 4 days

  2. Insulin-dependent suppression of lipolysis (via ex vivo adipose tissue biopsy analyses)

    Release of free fatty acids and glycerol in culture.

    Measured: 4 days

  3. Fat oxidation and substrate switching (via ex vivo skeletal muscle biopsy analyses)

    Using primary myotubes, fat oxidation and substrate switching will be tested by measuring [1-14C]palmitate oxidation ± varying levels of glucose and pyruvate

    Measured: 4 days

  4. Insulin sensitivity (via ex vivo skeletal muscle biopsy analyses)

    Myotubes will be incubated ± insulin (100nM) in media containing: [U-14C]-glucose to measure glucose oxidation and glycogen synthesis; [3H]-2-deoxyglucose to assess glucose uptake; or unlabeled DMEM to test insulin signaling (western blot)

    Measured: 4 days

  5. Gene expression (via ex vivo skeletal muscle biopsy analyses with RNASeq and RT-PCR)

    Genes related to oxphos and circadian clock regulators will be assessed by RNASeq and confirmed with RT-PCR.

    Measured: 4 days

  6. Glucose Area-Under-The-Curve (via 2-hour standard meal test)

    Glucose area-under-the-curve (AUC) will be calculated throughout a 2-hour period following consumption of a standard meal (dinner shake) test on Day 4 of each sleep condition.

    Measured: 4 days

  7. Insulin Area-Under-The-Curve (via 2-hour standard meal test)

    Insulin area-under-the-curve (AUC) will be calculated throughout a 2-hour period following consumption of a standard meal (dinner shake) test on Day 4 of each sleep condition.

    Measured: 4 days

  8. Blood pressure (via 24-hour ambulatory blood pressure monitoring)

    Blood pressure monitoring will be performed for a 24-hour period during Day 3 of each sleep conditions.

    Measured: 24 hours

  9. Resting metabolic rate (via indirect calorimetry)

    O2 consumption and CO2 production will be measured by indirect calorimetry for 40 min (last 30 min will be used for calculations) using a metabolic cart. Resting metabolic rate will be derived using standard equations.

    Measured: 4 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Feb 2020
  2. Study start28 Jul 2020
  3. Primary completion13 Apr 2022
  4. Study completion13 Apr 2022

Resources

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
Diagnosis
Allocation
Randomised
Intervention model
Crossover
Masking
Double blind
Who is masked
Investigator, Outcomes assessor
Enrolment
14 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04286451
Sponsor's protocol ID
PBRC 2020-007
Acronym
SLEEP-IN
Status last verified
Nov 2022
First submitted
13 Jan 2020
Last updated
16 Nov 2022
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Suryadevara HNSK, Hebert RC, Staszkiewicz J, Ravussin E, Marlatt KL, Singh P, Ghosh S. Transcriptional remodeling of human skeletal muscle following sleep restriction in postmenopausal women. Physiol Genomics. 2026 May 1;58(5):225-238. doi: 10.1152/physiolgenomics.00269.2025. Epub 2026 Mar 28.

    PubMed 41902670
  • Singh P, Beyl RA, Stephens JM, Noland RC, Richard AJ, Boudreau A, Hebert RC, Ravussin E, Broussard JL, St-Onge MP, Marlatt KL. Effect of sleep restriction on insulin sensitivity and energy metabolism in postmenopausal women: A randomized crossover trial. Obesity (Silver Spring). 2023 May;31(5):1204-1215. doi: 10.1002/oby.23739. Epub 2023 Mar 30.

    PubMed 36998155

Questions about this trial

What is this clinical trial studying?

A study testing Sleep Restriction and Habitual Sleep in people with Sleep Disturbance and Postmenopausal Symptoms, run by Pennington Biomedical Research Center 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 8 inclusion and 17 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 16 Nov 2022. 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?

Glucose infusion rate (via 2-step hyperinsulinemic-euglycemic clamp) (in vivo) (time frame: 4 days). 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 NCT04286451, 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 16 Nov 2022.

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