NCT00960505

Brief Summary

The proposed research will demonstrate that alternate day modified fasting (ADMF) is a suitable alternative to daily calorie restriction (CR) for weight loss, weight maintenance, and heart disease prevention. Since many overweight and obese individuals find it difficult to adhere to daily CR, this diet option may improve adherence with these dietary restriction protocols. This, in turn, will allow a greater percent of the overweight and obese population to lose weight, maintain weight loss, and prevent future occurrences of coronary heart disease.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
100

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Sep 2010

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 14, 2009

Completed
3 days until next milestone

First Posted

Study publicly available on registry

August 17, 2009

Completed
1 year until next milestone

Study Start

First participant enrolled

September 1, 2010

Completed
4.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 1, 2015

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 1, 2015

Completed
5.5 years until next milestone

Results Posted

Study results publicly available

July 9, 2020

Completed
Last Updated

July 21, 2020

Status Verified

July 1, 2020

Enrollment Period

4.3 years

First QC Date

August 14, 2009

Results QC Date

May 22, 2017

Last Update Submit

July 8, 2020

Conditions

Keywords

DietCoronary heart diseaseObesityWeight lossWeight maintenance

Outcome Measures

Primary Outcomes (1)

  • Body Weight

    Change in body weight from baseline to month 12

    Baseline to month 12

Secondary Outcomes (7)

  • Change in HDL Cholesterol

    12 month interval

  • Change in Systolic Blood Pressure

    12 month interval

  • Change in Fasting Glucose

    12 month interval

  • Change in Fasting Insulin

    12 month interval

  • Change in Insulin Resistance Measured by HOMA-IR

    12 month interval

  • +2 more secondary outcomes

Study Arms (3)

Alternate day fasting (ADF)

EXPERIMENTAL

Fast day diet: 25% energy intake, Feast day diet: Ad libitum energy intake (alternating days)

Other: Alternate day fasting

Calorie restriction (CR)

EXPERIMENTAL

75% energy intake every day

Other: Calorie restriction

Control

ACTIVE COMPARATOR

Usual diet

Other: Control diet

Interventions

Alternate day fasting (ADF)
Calorie restriction (CR)
Control

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age between 18 to 65 years old
  • BMI between 25.0 and 39.9 kg/m2
  • Previously sedentary (\<60 minutes/week of light activity corresponding to 2.5 to 4.0 metabolic equivalents (METs) for the 3 months prior to the study)

You may not qualify if:

  • Have a history cardiovascular disease (prior angina, myocardial infarction or stroke)
  • Are diabetic (fasting blood glucose \> 126 mg/dl)
  • Have a history of psychiatric disorders and/or eating disorders
  • Are taking anti-depressant or anti-anxiety medications
  • Are taking drugs that affect study outcomes (weight loss, lipid-lowering, or blood pressure drugs)
  • Are not weight stable for 3 months prior to the beginning of study (weight gain or loss \> 4 kg)
  • Are not able to keep a food diary or activity log for 7 consecutive days during screening
  • Are perimenopausal or have an irregular menstrual cycle (menses that does not appear every 27-32 days)
  • Are claustrophobic or have implanted electrical devices (cardiac pacemaker or a neurostimulator)
  • Are pregnant, or trying to become pregnant
  • Are smokers

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Illinois, Chicago

Chicago, Illinois, 60622, United States

Location

Related Publications (6)

  • Allaf M, Elghazaly H, Mohamed OG, Fareen MFK, Zaman S, Salmasi AM, Tsilidis K, Dehghan A. Intermittent fasting for the prevention of cardiovascular disease. Cochrane Database Syst Rev. 2021 Jan 29;1(1):CD013496. doi: 10.1002/14651858.CD013496.pub2.

  • Lin S, Lima Oliveira M, Gabel K, Kalam F, Cienfuegos S, Ezpeleta M, Bhutani S, Varady KA. Does the weight loss efficacy of alternate day fasting differ according to sex and menopausal status? Nutr Metab Cardiovasc Dis. 2021 Feb 8;31(2):641-649. doi: 10.1016/j.numecd.2020.10.018. Epub 2020 Oct 31.

  • Gabel K, Kroeger CM, Trepanowski JF, Hoddy KK, Cienfuegos S, Kalam F, Varady KA. Differential Effects of Alternate-Day Fasting Versus Daily Calorie Restriction on Insulin Resistance. Obesity (Silver Spring). 2019 Sep;27(9):1443-1450. doi: 10.1002/oby.22564. Epub 2019 Jul 22.

  • Miranda ER, Fuller KNZ, Perkins RK, Kroeger CM, Trepanowski JF, Varady KA, Haus JM. Endogenous secretory RAGE increases with improvements in body composition and is associated with markers of adipocyte health. Nutr Metab Cardiovasc Dis. 2018 Nov;28(11):1155-1165. doi: 10.1016/j.numecd.2018.07.009. Epub 2018 Aug 2.

  • Trepanowski JF, Kroeger CM, Barnosky A, Klempel M, Bhutani S, Hoddy KK, Rood J, Ravussin E, Varady KA. Effects of alternate-day fasting or daily calorie restriction on body composition, fat distribution, and circulating adipokines: Secondary analysis of a randomized controlled trial. Clin Nutr. 2018 Dec;37(6 Pt A):1871-1878. doi: 10.1016/j.clnu.2017.11.018. Epub 2017 Dec 5.

  • Trepanowski JF, Kroeger CM, Barnosky A, Klempel MC, Bhutani S, Hoddy KK, Gabel K, Freels S, Rigdon J, Rood J, Ravussin E, Varady KA. Effect of Alternate-Day Fasting on Weight Loss, Weight Maintenance, and Cardioprotection Among Metabolically Healthy Obese Adults: A Randomized Clinical Trial. JAMA Intern Med. 2017 Jul 1;177(7):930-938. doi: 10.1001/jamainternmed.2017.0936.

MeSH Terms

Conditions

Coronary DiseaseObesityWeight Loss

Interventions

Caloric Restriction

Condition Hierarchy (Ancestors)

Myocardial IschemiaHeart DiseasesCardiovascular DiseasesVascular DiseasesOverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsBody Weight Changes

Intervention Hierarchy (Ancestors)

Diet TherapyNutrition TherapyTherapeuticsEnergy IntakeDietNutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological Phenomena

Limitations and Caveats

1. The duration of the maintenance phase was short (6 months). 2. The dropout rate was higher than anticipated. 3. We enrolled predominantly metabolically healthy obese individuals.

Results Point of Contact

Title
Krista Varady, PhD, Associate Professor
Organization
University of Illinois Chicago

Study Officials

  • Krista Varady, PhD

    University of Illinois Chicago

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

August 14, 2009

First Posted

August 17, 2009

Study Start

September 1, 2010

Primary Completion

January 1, 2015

Study Completion

January 1, 2015

Last Updated

July 21, 2020

Results First Posted

July 9, 2020

Record last verified: 2020-07

Locations