NCT00990457

Brief Summary

Abdominal obesity, which is affected by a lack of physical activity and excess weight, put people at an increased risk of cardiovascular disease. This study will compare the effects of two different dietary approaches to weight loss, each combined with exercise, for their effects on cardiovascular factors that are early predictors of future cardiovascular disease in overweight and obese people with excessive weight around their waist. The two diets are a low-carbohydrate versus a more traditional low-fat, low calorie diet.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
77

participants targeted

Target at below P25 for phase_3

Timeline
Completed

Started Oct 2009

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

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2009

Completed
4 days until next milestone

First Submitted

Initial submission to the registry

October 5, 2009

Completed
1 day until next milestone

First Posted

Study publicly available on registry

October 6, 2009

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2011

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2011

Completed
Last Updated

April 4, 2013

Status Verified

April 1, 2013

Enrollment Period

1.9 years

First QC Date

October 5, 2009

Last Update Submit

April 1, 2013

Conditions

Keywords

ExerciseWeight loss dietObesityOverweightAbdominal obesityCardiovascular functionBody composition

Outcome Measures

Primary Outcomes (1)

  • Cardiovascular structure and function

    Measured at 6 months

Secondary Outcomes (1)

  • Body composition

    Measured at 6 months

Study Arms (2)

Low-carbohydrate Diet Plus Exercise

ACTIVE COMPARATOR

Participants will follow a low-carbohydrate weight loss diet plus participate in a supervised exercise training program for 6 months.

Behavioral: Weight Loss Diets Plus Exercise

Low-Fat, Low-Calorie Diet Plus Exercise

ACTIVE COMPARATOR

Participants will follow a low-calorie, low-fat weight loss diet plus participate in a supervised exercise training program for 6 months.

Behavioral: Weight Loss Diets Plus Exercise

Interventions

The weight loss diet will be either a low-carbohydrate diet or a low-fat, low-calorie diet. All participants will also be enrolled in a supervised exercise program. The supervised exercise training sessions will take place three times a week for 6 months. Each session will last 1 to 1 ½ hours and will include aerobic exercise and weight training.

Low-Fat, Low-Calorie Diet Plus ExerciseLow-carbohydrate Diet Plus Exercise

Eligibility Criteria

Age30 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Ages 30-65 years old
  • Body mass index (BMI) of 25-42 kg/m\^2
  • Waist of 35 inches or greater in women and 40 inches or greater in men; or, a
  • Waist-hip ratio greater than 1.

You may not qualify if:

  • Currently smokes
  • History or evidence of cardiovascular disease or other major chronic illness
  • Currently exercising regularly or following a weight loss diet
  • Diabetes
  • Uncontrolled high blood pressure
  • Any illness that would prevent participation in a moderate-intense exercise program
  • Pregnant
  • Substance abuse

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Johns Hopkins Bayview Medical Center

Baltimore, Maryland, 21224, United States

Location

MeSH Terms

Conditions

OverweightObesitySedentary BehaviorObesity, AbdominalMotor Activity

Interventions

Diet, ReducingExercise

Condition Hierarchy (Ancestors)

OvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsBehavior

Intervention Hierarchy (Ancestors)

Diet TherapyNutrition TherapyTherapeuticsDietNutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological PhenomenaMotor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Study Officials

  • Kerry J Stewart, EdD

    Johns Hopkins University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor of Medicine

Study Record Dates

First Submitted

October 5, 2009

First Posted

October 6, 2009

Study Start

October 1, 2009

Primary Completion

September 1, 2011

Study Completion

September 1, 2011

Last Updated

April 4, 2013

Record last verified: 2013-04

Locations