Obesity Clinical Trial - PsylliumRx Dietary Fiber Study

Status Suspended

Clinical Trial Summary

The purpose of this pilot study is to assess the feasibility of a 3-month dietary fiber intervention: 1) engaging adolescents in regularly consuming a dietary fiber preparation (psyllium powder) and obtaining their parents' support, 2) recruit into a clinical pilot trial with liquid meal challenge test to study the metabolic effects of the dietary fiber preparation. A study modification will be submitted to add additional study arms for feasibility (strength training, coaching).

Clinical Trial Description

For this 3-month clinical pilot trial to test the effects of dietary fiber, 120 healthy obese adolescents and young adults, age 12-21 (>97th percentile of BMI-for-age) will be recruited to participate in this study. Recruitment outreach will begin with an email invitation. Parents will be encouraged to call a toll-free number for study information and answer via email. One email will be sent to potential study participants. If there is no response to the email, research staff will call parents up to 5 times and leave 3 messages to introduce the study. Once a parent or potential participant has been reached over the phone, research staff will explain the study and determine interest in participating. If member is interested in participating, research staff will email member the informed consent form (ICF). Participants will sign ICF using Adobe e-Sign web server. Intervention: Participants will be instructed to consume 1 tea spoon of psyllium per day for 3 months and otherwise maintain their habitual diet. Using a mobile application, participants will be asked to track bowel movement and intestinal symptoms such as bloating and flatulence beginning two weeks prior to the intervention. Liquid meal challenge test: The metabolic test will be conducted as two sessions lasting 180 minutes each, before and after the dietary fiber intervention (week 0 and 12). Subjects will participate in the metabolic tests after an overnight fast. Subjects will consume 250 ml of a standard liquid meal replacement shake with sugar added to 75 g of total sugar per meal (equivalent to oral glucose tolerance test used in clinical care). Blood draw will be done through an indwelling catheter in the antecubital vein and blood samples collected into 3 mL Ethylenediaminetetraacetic acid (EDTA) containing tubes at -15, 0, 30, 60, 90, 120, and 180 minutes after administration of the test meal. An additional 5 mL serum tube and urine will be collected at time -15 min. Total blood draw volume for the entire test is 26 mL. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03629119
Study type	Interventional
Source	Kaiser Permanente
Contact
Status	Suspended
Phase	N/A
Start date	July 31, 2019
Completion date	December 2022

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.