- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00477477
Nutritional Treatment of Overweight Adolescents With Cardiovascular Risk Factors (PowerUp)
Nutritional Treatment of Overweight Adolescents With Cardiovascular Risk Factors
Study Overview
Status
Intervention / Treatment
Detailed Description
The prevalence of obesity and overweight among children is high, and increasing. Metabolic syndrome, a recently recognized consequence of obesity, is known to confer an elevated risk for cardiovascular (CV) disease and diabetes type 2 in adults. The primary treatment for metabolic syndrome is lifestyle modification, including dietary changes. However, little is known about how dietary composition, as distinct from decreased caloric intake and weight loss, alters metabolic syndrome abnormalities in children. Moreover, the optimal pediatric nutritional strategy for prevention and treatment of metabolic syndrome is unknown. The overall goal of this research protocol is to evaluate two nutritional approaches to pediatric metabolic syndrome in post-pubertal overweight adolescents, a low saturated fat diet and a low glycemic load (GL) diet. The design of the protocol is a short-term, modified feeding study that evaluates the efficacy of these two nutritional approaches with equal weight loss goals. Outcome measures will include the percent changes from baseline to the end of the intervention period (8 weeks) in metabolic abnormalities, inflammatory cytokines and adipokines, and non-invasive tests of vascular function. Metabolomic profiles are measured at baseline and 8 weeks in a subset of the participants.
To facilitate compliance and adherence, participants chose from a menu of food choices and food will be delivered to participants homes to supply most of the meals and snacks participants consume. Participants will receive weekly personal nutritional counseling to enhance compliance with frequent phone follow-up. Subsequent to the feeding portion of the intervention, participants are counselled by phone at least on a monthly basis and the effects of this maintenance phase is measured at 6 months.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Massachusetts
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Boston, Massachusetts, United States, 02115
- Children's Hospital Boston
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Ages 8 to 17 years old
- Overweight, defined as BMI ≥ 85th%tile for age and gender
- At least two CV risk factor typical of the metabolic syndrome including insulin resistance, high or borderline blood pressure, low HDL, high TG
- Insulin > 10 u/L
- Able to attend study visits once a week at participant's home, and eat meals provided by the Children's Hospital CTSA Boston MA as supplied for most meals and snacks
- Non-smoker
- Able to understand/speak English
- Informed consent to participate from a parent or legal guardian. Adolescents must also provide written assent to participate in the study.
Exclusion Criteria:
- Pre-existing physician diagnosis of a major medical illness or history of a major medical illness including but not limited to heart, kidney or liver disease, cancer, endocrinopathy including thyroid disorder, genetic syndrome or psychiatric illness, also including vasculitides such as Kawasaki disease or rheumatologic disorder; diabetes type I or II, evidence of severe fatty liver, hypertension requiring pharmacologic treatment, history of or current diagnosis of an major eating disorder
- Current or anticipated pregnancy
- Weight more than 275 lbs (125 kg)
- Abnormalities on initial screening assessment requiring pharmacotherapy urgent treatment, such as familial hyperlipidemia, end organ effects of hypertension, or metabolic abnormalities such as diabetes
- Taking any prescription medication or non-prescription substance that affects cholesterol levels, blood pressure, or insulin sensitivity (including but not limited to oral glucocorticoids, oral contraceptives, neuropsychiatric agents, anti-epileptics, HMG-CoA reductase inhibitors, bile acid binding cholesterol transport inhibitors among others) and the use of alcohol or illicit substances.
- Anticipated difficulty with participatory requirements of the study including food allergies, significantly restricted food preferences, or other difficulties as assessed by research staff.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: 1
Low glycemic load diet
|
Low glycemic load diet prepared/delivered for 8 weeks, and counseled for 4 more months.
Daily multivitamin.
Low saturated fat diet prepared/delivered for 8 weeks, and counseled for 4 more months.
Daily multivitamin.
|
Active Comparator: 2
Low fat diet
|
Low glycemic load diet prepared/delivered for 8 weeks, and counseled for 4 more months.
Daily multivitamin.
Low saturated fat diet prepared/delivered for 8 weeks, and counseled for 4 more months.
Daily multivitamin.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Insulin resistance
Time Frame: 8 weeks, 6 months
|
8 weeks, 6 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Inflammation
Time Frame: 8 weeks, 6 months
|
8 weeks, 6 months
|
|
dyslipidemia
Time Frame: 8 weeks, 6 months
|
8 weeks, 6 months
|
|
blood pressure
Time Frame: 8 weeks, 6 months
|
8 weeks, 6 months
|
|
coagulopathy
Time Frame: 8 weeks, 6 months
|
8 weeks, 6 months
|
|
vascular function
Time Frame: 8 weeks, 6 months
|
8 weeks, 6 months
|
|
liver function testing
Time Frame: 8 weeks, 6 months
|
8 weeks, 6 months
|
|
Metabolomic profile
Time Frame: baseline, 8 weeks
|
The metabolomic profile of a subset of the participants will be measured at baseline and 8 weeks.
|
baseline, 8 weeks
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Sarah D. de Ferranti, Boston Children's Hospital
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 07-01-0020
- K23HL085308 (U.S. NIH Grant/Contract)
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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