PrediabetesNCT07450118
Nested Pilot Study Comparing Two Treatments to Reduce Type 2 Diabetes Risk in At-Risk Delawareans
A study testing National Diabetes Prevention Program (DPP), Sleep Health Digital Application and Time-Restricted Eating (TRE) in people with Prediabetes, run by University of Delaware at 1 site in United States.
Trial summary
This nested pilot Randomized Clinical Trial will determine whether the Diabetes Prevention Program (DPP) enhanced with evidence-based sleep health and time restricted eating interventions ("DPP++") is more effective than the DPP alone for improving metabolic and cardiovascular metrics in 40 overweight/obese adults… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Prediabetes
- What is being tested?
- National Diabetes Prevention Program (DPP), Sleep Health Digital Application and Time-Restricted Eating (TRE)
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 14 participants
- Where
- 1 siteUnited States
- Study dates
- 23 Apr 2026to Jun 2027
- Phase
- Interventional
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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adults aged 18 years or older
- Prediabetes confirmed by blood test result within 12 months of enrollment, previous diagnosis of gestational diabetes mellitus (GDM), or positive screening for prediabetes based on the Prediabetes Risk Test
- BMI of 25 kg/m² or greater (23 kg/m² or greater for Asian Americans)
Who cannot join
- Age younger than 18 years
- BMI less than 25 kg/m² (less than 23 kg/m² for Asian Americans)
- No current diagnosis of prediabetes or gestational diabetes mellitus
- Prior diagnosis of type 1 or type 2 diabetes
- Pregnancy at the time of enrollment
- Development of a medical condition that, in the PI's judgment, could be exacerbated by the study interventions (e.g., eating disorder, severe sleep disorder)
Trial locations and contacts
1 site in 1 country.
United States1 site
Nutrition Clinic, University of Delaware
Newark, Delaware, 19713
About this study
This nested pilot Randomized Clinical Trial will determine whether the Diabetes Prevention Program (DPP) enhanced with evidence-based sleep health and time restricted eating interventions ("DPP++") is more effective than the DPP alone for improving metabolic and cardiovascular metrics in 40 overweight/obese adults with prediabetes.
Read the detailed description
Prediabetes affects over one-third of Delaware residents, placing more than 70% at risk of developing type 2 diabetes (T2D) within a decade if left untreated. This public health burden disproportionately impacts diverse population segments, including racial/ethnic minority groups and those with lower income and education; groups who are less likely to benefit from current prevention strategies. The 12-month National Diabetes Prevention Program (DPP) is the first-line intervention to prevent T2D, but only 35% of participants achieve the recommended ≥5% weight loss, with non-responders more likely to reside in high-priority communities. Moreover, comorbid conditions such as hypertension remain inadequately addressed. Sleep health improvements and time-restricted eating (TRE) are two promising, evidence-based strategies shown to enhance metabolic and cardiovascular outcomes. Despite recommendations from national guidelines for diabetes prevention and management to include sleep health, their widespread implementation is limited by the lack of an effective delivery platform. Expanding the DPP to include these interventions (creating the "DPP++"; DPP + sleep health + TRE) could provide a scalable solution to enhance efficacy and improve access to diabetes prevention across all communities. This 12-month Clinical and Translational Research (CTR) pilot study will evaluate the clinical efficacy of DPP++ compared to the standard DPP among adults at risk for T2D already enrolled in DPP cohorts administered by the University of Delaware Nutrition Clinic. Focused community-engagement efforts that are overseen by the study steering committee will target traditionally overlooked populations to enroll in these cohorts. Between months 1-3 of the standard DPP, participants will be invited to join a nested randomized controlled trial. In month 4, consenting participants will be randomized to either the standard DPP (control) or DPP++. Aim 1 of this study will compare the efficacy of DPP++ vs. standard DPP on metabolic health at 6 and 12 months. Aim 2 will assess DPP++ vs. standard DPP differences in cardiovascular health and quality of life. Completing this pilot will also support the capacity for integrating the sleep health and TRE intervention components into clinical practice.
- Conditions
- Prediabetes
- Being tested
- National Diabetes Prevention Program (DPP), Sleep Health Digital Application, Time-Restricted Eating (TRE)
- Keywords
- Prediabetes, Time Restricted Eating, Sleep Health, Cardiometabolic Health, Circadian Health
- Medical subject headings
- Prediabetic State, Intermittent Fasting
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
National Diabetes Prevention Program (DPP)Behavioural
A 12-month, 26-session group-based lifestyle intervention delivered by trained lifestyle coaches focusing on healthy eating, physical activity, stress management, and behavior change strategies. The primary goal is to achieve 5-7% weight loss and 150 minutes of moderate-to-vigorous physical activity per week. Sessions are delivered weekly in months 1-4, bi-weekly in months 5-6, and monthly in months 7-12.
Sleep Health Digital ApplicationBehavioural
A self-guided digital sleep health program delivering evidence-based behavioral strategies to improve sleep duration, timing, and quality. Participants have access to the application during months 5-12 of the study.
Time-Restricted Eating (TRE)Behavioural
A self-guided intervention targeting eating window. Participants receive educational materials and a brief orientation session at randomization to support implementation and adherence.
| Study group | Role | What they receive |
|---|---|---|
| Standard Diabetes Prevention Program (DPP Control) | Active comparator | Participants continue with the standard 12-month National Diabetes Prevention Program (DPP) as delivered by the University of Delaware Nutrition Clinic. The DPP is a 26-session, group-based lifestyle intervention focusing on healthy eating, increased physical activity, and behavior change strategies, with a primary goal of achieving 5-7% weight loss and 150 minutes of moderate-to-vigorous physical activity per week. Sessions are delivered weekly in months 1-4, bi-weekly in months 5-6, and monthly in months 7-12. Receives: Behavioral: National Diabetes Prevention Program (DPP) |
| Enhanced Diabetes Prevention Program (DPP++) | Experimental | Participants receive the standard 12-month DPP plus two additional evidence-based components delivered in months 5-6: (1) a sleep health digital application delivering self-guided behavioral strategies to improve sleep, and (2) a time-restricted eating intervention. Educational materials and a brief orientation session are provided at the time of randomization to support engagement with both added components. Receives: Behavioral: National Diabetes Prevention Program (DPP); Behavioral: Sleep Health Digital Application; Behavioral: Time-Restricted Eating (TRE) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Percent weight loss
Percent weight loss from baseline, calculated from body weight measured at baseline and the primary endpoint (month 6). Between-group differences in percent weight loss will be compared between the experimental DPP++ and control DPP arms.
Measured: Baseline to 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Mar 2026
- Study start23 Apr 2026
- Primary completionDec 2026 (estimated)
- Study completionJun 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for PrediabetesStudies of the same condition, open and under way.
- 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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Nested randomized controlled trial embedded within the University of Delaware Nutrition Clinic's accredited 12-month National Diabetes Prevention Program (DPP). Participants already enrolled in DPP cohorts are invited to join the nested RCT during months 1-3 of the standard DPP, with randomization occurring by month 4 using a stratified permuted block design stratified by sex. Consenting participants are randomized 1:1 to continue with the standard DPP (control) or the enhanced DPP++ (experimental), which adds a sleep health digital application and time-restricted eating components during months 5-6.
- Masking
- None (open label)
- Enrolment
- 14 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Delaware
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Freda Patterson, University of Delaware
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07450118
- Sponsor's protocol ID
- 2355212
- Status last verified
- Oct 2026
- First submitted
- 26 Feb 2026
- Last updated
- 22 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No