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CompletedNCT07871565Updated Oct 13, 2026

Time-Restricted Eating With or Without Energy Restriction in Dyslipidemic Women With Owerweight or Obesity

An interventional study of TRE, ER, TRE+ER in Dyslipidemia and Obesity & Overweight, sponsored by Acibadem University. Completed at 1 site in Turkey (Türkiye). Open to female participants aged 19 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-10-13.

Sponsored by Acibadem University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 4 years 7 months after the study started (first participant enrolled Feb 2022, registered Sep 2026).
Updated Oct 13, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
56
Allocation
Randomized
Ages
19 Years to 65 Years
Sex
Female
01

Study summary

Background/Objectives: It is unclear whether the effects of time-restricted eating (TRE) on body composition and blood lipids are independent of energy restriction (ER), and whether combining the two confers additional benefit. Methods: In this prospective, 8-week, three-arm, parallel-group randomized controlled trial, 85 sedentary women aged 19-65 years with overweight/obesity and untreated dyslipidemia were allocated to TRE (16:8, ad libitum intake within a 12:00-20:00 window), ER (individually calculated diet providing approximately 500 kcal/day below total energy expenditure) or TRE + ER. Anthropometry and bioelectrical impedance analysis were performed at baseline, week 4 and week 8, and fasting biochemistry at baseline and week 8.

02

Conditions studied

  • Dyslipidemia
  • Obesity & Overweight

Keywords

  • time-restricted eating
  • intermittent fasting
  • energy restriction
  • obesity
  • dyslipidemia
  • body composition
  • lipid profile
  • chrononuftrition
  • women
03

In context

Dyslipidemias

1,101 studies on the registry are indexed under Dyslipidemias; 161 are open to participants now.

This study's enrollment of 56 is below the median of 100 across 861 interventional studies indexed under Dyslipidemias.

Browse Dyslipidemias studies →

Lead sponsor

Acibadem University is the lead sponsor of 218 studies on the registry; 49 are open to participants now.

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

04

Who can participate

Ages eligible
19 Years to 65 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Eligible participants were sedentary women aged 19-65 years with overweight or obesity (BMI ≥ 25 kg/m²) who had received a physician diagnosis of dyslipidemia but were not taking lipid-lowering medication, and who volunteered to take part.

Exclusion criteria

Exclusion Criteria:

  • Pregnancy or lactation
  • Shift work
  • smoking
  • excessive alcohol consumption
  • a major adverse cardiovascular event in the previous year (acute coronary syndrome, percutaneous coronary interven-tion, coronary artery bypass grafting, hospitalization for congestive heart failure, stroke or transient ischemic attack)
  • uncontrolled arrhythmia
  • diabetes mellitus or reactive hypo-glycemia
  • congenital or immunological disease
  • acute pancreatitis, cirrhosis or malignancy
  • a diagnosed eating disorder
  • stage 4 or 5 chronic kidney disease or dialysis treatment
  • any concurrent medical nutrition therapy prescribed for another indication (e.g., celiac disease)
  • previous bariatric surgery
  • thyroid disease requiring dose titration of replacement therapy within the previous three months (stable replacement therapy for hypothyroidism was not an exclusion criterion)
  • a major psychiatric disorder.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
56 participants (actual)

Study arms

  • Experimental
    TRE alone

    TRE alone

    Other: TRE, ER, TRE+ER

  • Experimental
    TRE combined with ER

    TRE combined with ER

    Other: TRE, ER, TRE+ER

  • Active comparator
    ER alone

    ER alone

    Other: TRE, ER, TRE+ER

Interventions

  • OtherTRE, ER, TRE+ER

    The TRE arm followed a 16:8 protocol \[23\]: all food was consumed within an 8-h window from 12:00 to 20:00, and the remaining 16 h were spent fasting. Within the eating window participants ate ad libitum and received no guidance on food quantity or composition. During the 16-h fasting period only energy-free beverages (water, tea and coffee without added energy) were permitted. Participants in the TRE + ER arm followed the same 12:00-20:00 window while also adhering to the individually prescribed en-ergy-restricted diet described above.

06

What researchers measure

Primary outcomes

  1. Change in Body Weight (kg)

    Body weight was assessed at baseline, week 4, and week 8. Body weight was measured in kilograms (kg)

    Time frame: 8 weeks

  2. Change in BMI (kg/m²).

    Body Mass Index (BMI) was assessed at baseline, week 4, and week 8. BMI was calculated in kilograms per square meter (kg/m²).

    Time frame: 8 weeks.

  3. Change in Waist Circumference (cm)

    Waist circumference was assessed at baseline, week 4, and week 8. Waist circumference was measured in centimeters (cm).

    Time frame: 8 weeks.

  4. Change in Hip Circumference (cm)

    Hip circumference was assessed at baseline, week 4, and week 8. Hip circumference was measured in centimeters (cm).

    Time frame: 8 weeks.

  5. Change in Fat Mass (kg)

    Fat mass was assessed at baseline, week 4, and week 8. Fat mass was measured in kilograms (kg) using bioelectrical impedance analysis.

    Time frame: 8 weeks.

  6. Change in Fat-Free Mass (kg)

    Fat-free mass was assessed at baseline, week 4, and week 8. Fat-free mass was measured in kilograms (kg) using bioelectrical impedance analysis.

    Time frame: 8 weeks.

  7. Change in Skeletal Muscle Mass (kg)

    Skeletal muscle mass was assessed at baseline, week 4, and week 8. Skeletal muscle mass was measured in kilograms (kg) using bioelectrical impedance analysis.

    Time frame: 8 weeks

  8. Change in Total Cholesterol (mg/dL)

    Total cholesterol was assessed at baseline and week 8. Total cholesterol was measured in milligrams per deciliter (mg/dL).

    Time frame: 8 weeks

  9. Change in LDL Cholesterol (mg/dL)

    LDL cholesterol was assessed at baseline and week 8. LDL cholesterol was measured in milligrams per deciliter (mg/dL).

    Time frame: 8 weeks

  10. Change in HDL Cholesterol (mg/dL)

    HDL cholesterol was assessed at baseline and week 8. HDL cholesterol was measured in milligrams per deciliter (mg/dL).

    Time frame: 8 weeks

  11. Change in Triglycerides (mg/dL)

    Triglycerides was assessed at baseline and week 8. Triglycerides was measured in milligrams per deciliter (mg/dL).

    Time frame: 8 weeks

  12. Change in HbA1C (%)

    HbA1C was assessed at baseline and week 8. HbA1C was measured as a percentage (%).

    Time frame: 8 weeks.

  13. Change in Waist-to-Hip Ratio

    Waist-to-hip ratio was assessed at baseline, week 4, and week 8.

    Time frame: 8 weeks

  14. Change in Body Fat Percentage (%)

    Body fat percentage was assessed at baseline, week 4, and week 8. Body fat percentage was measured as a percentage (%).

    Time frame: 8 weeks

  15. Change in Fat-Free Mass Percentage (%)

    Fat-free mass percentage was assessed at baseline, week 4, and week 8. Fat-free mass percentage was measured as a percentage (%)

    Time frame: 8 weeks

  16. Change in VLDL Cholesterol (mg/dL)

    VLDL cholesterol was assessed at baseline, and week 8. VLDL cholesterol was measured in milligrams per deciliter (mg/dL)

    Time frame: 8 weeks

  17. Change in Fasting Plasma Glucose (mg/dL)

    Fasting plasma glucose was assessed at baseline and week 8. Fasting plasma glucose was measured in milligrams per deciliter (mg/dL).

    Time frame: 8 weeks

  18. Change in AST (U/L)

    AST was assessed at baseline and week 8. AST was measured in units per liter (U/L)

    Time frame: 8 weeks

  19. Change in ALT (U/L)

    ALT was assessed at baseline and week 8. ALT was measured in units per liter (U/L)

    Time frame: 8 weeks

  20. Change in TIBC (μg)

    Total iron-binding capacity was assessed at baseline and week 8.Total iron-binding capacity was measured in micrograms per deciliter (μg/dL).

    Time frame: 8 weeks

  21. Change in Ferritin (ng/mL)

    Ferritin was assessed at baseline and week 8. Ferritin was measured in nanogram per milliliter (ng/mL)

    Time frame: 8 weeks

  22. Change in Creatinine (mg/dL)

    Creatinine was assessed at baseline and week 8. Creatinine was measured in milligrams per deciliter (mg/dL).

    Time frame: 8 weeks

07

Study locations

1 site
  • Acibadem University
    Istanbul, Turkey (Türkiye)
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

1 registry update since Sep 25, 2026
Registered
First appeared on the registry. No changes since
Oct 13, 2026
Show all 1 update
  1. Oct 13, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07871565
Responsible party
Sponsor
First posted
Oct 13, 2026
Start date
Feb 1, 2022
Primary completion
Jul 30, 2024
Completion
Jul 30, 2024
Last update
Oct 13, 2026

Study contacts

Murat BAS, Professor
study director · Acibadem University
Gözde ARITICI COLAK, Associate Professor
study director · Acibadem University
Irem OZKAN, pHD
principal investigator · Istanbul Public Health Institution

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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