Individual Metabolism and Physiology Signature Study

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

52 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-12-16

Study Completion Date

2017-03-30

Brief Summary

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To determine if consumption of different diet plans that both are nutritionally-adequate and provide energy to maintain body weight, alters fasting insulin concentrations, shifts other common clinical markers of metabolic disease risk, and affects metabolomic profiles that reflect glucose, lipid, and amino acid metabolism.

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Detailed Description

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Western Human Nutrition Research Center (WHNRC) scientists have observed rapid and substantial improvements in metabolic health indices in non-diabetic obese persons who undergo a weight-maintenance diet including prepared meals that were aligned with current dietary recommendations, including those of the Institute of Medicine and the United States Department of Agriculture (USDA) and Department of Health and Human Services (DHHS) Dietary Guidelines for Americans. For instance, marked reductions and often normalization of hyperinsulinemia were observed within days of provision of a controlled nutrient-dense high quality diet, and LDL was reduced by 20-30% or more within 2 weeks or possibly earlier. This indicates that change in diet alone would benefit many at-risk persons with respect to normalizing metabolic parameters and disease risk markers. Yet, surprisingly little formal research has focused on how a high quality, weight maintaining diet impacts health over a short-term period in at-risk individuals. The overall objective of this study is to determine if a nutrient-adequate diet closely aligned with food group recommendations set in the 2010 Dietary Guidelines for Americans elicits a superior metabolic profile in persons at-risk for metabolic disease, compared to a nutrient-adequate containing foods closely aligned with the National Health and Nutrition Examination Survey (NHANES) "What We Eat In America" report. Further, the investigation will include effect modification of stress-related cortisol measures on change in cardiometabolic risk factors.

Conditions

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Insulin Resistance Metabolic Syndrome X Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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DGA Diet Plan

A nutrient-adequate, balanced diet providing energy to maintain body weight, and macronutrient composition falling within the acceptable range, as recommended by the Institute of Medicine. The foods provided in this diet will be closely aligned with food group recommendations set in the 2010 Dietary Guidelines for Americans. All foods and beverages will be provided to enrolled subjects during the intervention period.

Group Type EXPERIMENTAL

DGA Diet Plan

Intervention Type OTHER

A nutrient-adequate, balanced diet providing energy to maintain body weight, and macronutrient composition falling within the acceptable range, as recommended by the Institute of Medicine. The foods provided in this diet will be closely aligned with food group recommendations set in the 2010 Dietary Guidelines for Americans.

NHANES Diet Plan

A nutrient-adequate, balanced diet providing energy to maintain body weight, and macronutrient composition falling within the acceptable range, as recommended by the Institute of Medicine. The foods provided in this diet plan will be closely aligned with the NHANES "What We Eat In America" report. All foods and beverages will be provided to enrolled subjects during the intervention period.

Group Type EXPERIMENTAL

NHANES Diet Plan

Intervention Type OTHER

A nutrient-adequate, balanced diet providing energy to maintain body weight, and macronutrient composition falling within the acceptable range, as recommended by the Institute of Medicine. The foods provided in this diet will be closely aligned with the NHANES "What we eat in America" report.

Interventions

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DGA Diet Plan

A nutrient-adequate, balanced diet providing energy to maintain body weight, and macronutrient composition falling within the acceptable range, as recommended by the Institute of Medicine. The foods provided in this diet will be closely aligned with food group recommendations set in the 2010 Dietary Guidelines for Americans.

Intervention Type OTHER

NHANES Diet Plan

A nutrient-adequate, balanced diet providing energy to maintain body weight, and macronutrient composition falling within the acceptable range, as recommended by the Institute of Medicine. The foods provided in this diet will be closely aligned with the NHANES "What we eat in America" report.

Intervention Type OTHER

Other Intervention Names

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Dietary Guidelines for Americans Diet Plan

Eligibility Criteria

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Inclusion Criteria

* Premenopausal by self-report
* Body Mass Index 25-39.9 kg/m2
* Fasting glucose ≥100 and \<126 mg/dL and/or
* Oral Glucose Tolerance Test (OGTT) 2-hour glucose ≥140 and \<199 mg/dL and/or
* Quantitative insulin sensitivity check index (QUICKI) score \<0.315 and/or
* Homeostasis Model Assessment (HOMA) \>3.67, or log HOMA \>0.085 and/or
* Glycated Hemoglobin HbA1c ≥5.7 and \<6.5fasting glucose ≥100 and \<126 mg/dL and/or
* Fasting triglyceride concentrations \>150 mg/dL and/or
* LDL cholesterol \>100 mg/dL and/or
* HDL cholesterol \<40 mg/dL.

Exclusion Criteria

* BMI \<25 and \>39.9 kg/m2
* Presence of any metabolic diseases, by self-report
* Gastrointestinal disorders by self-report
* Presence of cancer or other serious chronic disease by self-report
* Current use of prescribed or over the counter weight loss medications
* Pregnant
* Lactating
* Current use of tobacco
* Moderate or strenuous physical activity \>30 min/day, 5 or more days per week
* Weight change \>5% of body weight during the previous 6 months
* Dietary restrictions that would interfere with consuming the intervention foods

Minimum Eligible Age

20 Years

Maximum Eligible Age

65 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes