Effects of Diet Selection Based on Genetic Screening on Success to a Weight Loss Program (Curves3)

April 11, 2017 updated by: Texas A&M University

Effects of Diet Type Selection Based on Response to a Carbohydrate Intolerance Questionnaire and Genetic Screening on Success to a Weight Loss and Exercise Program

The purpose of this study is to determine the effects of diet type selection based on response to a Carbohydrate Intolerance Questionnaire (CIQ) and genetic screening on success to a weight loss and exercise program.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The purpose of this study is to determine if stratification of individuals based on responses to a Carbohydrate Intolerance Questionnaire (CIQ), genetic screening, and/or DNA methylation affects weight loss success and/or health outcomes of women following the Curves moderate carbohydrate, high protein, low fat diet (30% carbohydrate, 45% protein, 25% fat) or the Curves carbohydrate restricted, high protein, moderate fat diet (20% carbohydrate, 45% protein, 35% fat).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
51

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 60 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • The participant is an apparently healthy female
  • The participant is between the ages of 18 and 60

Exclusion Criteria:

  • The participant is pregnant or nursing, or plans to become pregnant during the next 12 months or has been pregnant in the past 12 months
  • The participant has uncontrolled metabolic disorder including known electrolyte abnormalities; heart disease, arrhythmias, diabetes, thyroid disease, or hypogonadism; a history of hypertension, hepatorenal, musculoskeletal, autoimmune, or neurological disease
  • The participant is currently taking thyroid, hyperlipidemic, hypoglycemic, anti-hypertensive, or androgenic medications
  • The participant has taken ergogenic levels of nutritional supplements that may affect muscle mass (e.g., creatine, HMB), anabolic/catabolic hormone levels (androstenedione, DHEA, etc.) or weight loss (e.g., ephedra, thermogenics, etc.) within the past three months
  • The participant is willing to take participate in a regular moderate exercise program

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Health Services Research
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Positive CIQ plus High Carbohydrate Diet
Positive Carbohydrate Intolerance Questionnaire (CIQ) plus 30% carbohydrate, 45% protein, 25% fat diet
Other: Positive CIQ plus High Carbohydrate Diet
Positive Carbohydrate Intolerance Questionnaire plus High Carbohydrate Diet
Active Comparator: Positive CIQ plus High Protein Diet
Positive Carbohydrate Intolerance Questionnaire (CIQ) plus 20% carbohydrate, 45% protein, 35% fat diet
Other: Positive CIQ plus High Protein Diet
Positive Carbohydrate Intolerance Questionnaire plus High Protein Diet
Active Comparator: Negative CIQ plus High Carbohydrate Diet
Negative Carbohydrate Intolerance Questionnaire (CIQ) plus 30% carbohydrate, 45% protein, 25% fat diet
Other: Negative CIQ plus High Carbohydrate Diet
Negative Carbohydrate Intolerance Questionnaire plus High Carbohydrate Diet
Active Comparator: Negative CIQ plus High Protein Diet
Negative Carbohydrate Intolerance Questionnaire (CIQ) plus 20% carbohydrate, 45% protein, 35% fat diet
Other: Negative CIQ plus High Protein Diet
Negative Carbohydrate Intolerance Questionnaire plus High Protein Diet

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Effects of diet selection on physical activity patterns changes (steps per day)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on body weight changes (pounds)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on hip/waist ratio changes (inches)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on Resting Energy Expenditure (REE) changes (calories per day)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on Blood Pressure (BP) changes (mmHG)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on Heart Rate (HR) changes (beats per minute)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on body composition (DXA) changes (percent fat mass)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on Bioelectrical Impedance Analysis (BIA) changes (flow impedance)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on a chemistry-15 blood panel changes
Time Frame: 24 weeks
24 weeks
Effects of diet selection on a cell blood count (CBC) blood panel changes
Time Frame: 24 weeks
24 weeks
Effects of diet selection on lipid panel changes
Time Frame: 24 weeks
24 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Effects of diet selection on maximal cardiopulmonary capacity changes (ml/kg/min)
Time Frame: 24 weeks
24 weeks
Effects of diet selection on muscular strength through a 1 repetition maximum (1 RM) test
Time Frame: 24 weeks
24 weeks
Effects of diet selection on muscular endurance through a maximal repetition test
Time Frame: 24 weeks
24 weeks
Effects of diet selection on gene expression changes
Time Frame: 24 weeks
24 weeks
Effects of diet selection on DNA methylation changes
Time Frame: 24 weeks
24 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Texas A&M University

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Curves International

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Richard B Kreider, PhD, Texas A&M University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 1, 2013

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 1, 2015

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 29, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 11, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 17, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 17, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 11, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IRB2013-0737F

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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Conditions

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