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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT04916327
Other study ID # HM20020955-1
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date August 23, 2021
Est. completion date August 2024

Study information

Verified date August 2023
Source Virginia Commonwealth University
Contact Ryan Garten, PhD
Phone (804) 828-1948
Email rsgarten@vcu.edu
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of this research study is to examine the role oxidants, substances produced in the blood that can damage blood vessel function, may play in blood vessel function in healthy individuals as well as individuals with mental health disorders (posttraumatic stress disorder (PTSD) and/or generalized anxiety disorder (GAD)).


Description:

Study #1 is made up of three sessions done on three separate days and the entire study can be completed in as little as two weeks. All testing sessions will take place at the Exercise Physiology Research Laboratory. Volunteers will be asked to participate in one initial testing session (Visit 1) lasting < 1 hour that will help make them more familiar with the study equipment and procedures, determine body measures (height, weight, body fat), determine the maximum strength of their forearm and calf, and require one blood draw. The following two testing sessions (Visits 2 and 3) with each session lasting between 2-3 hours that will involve multiple tests designed to determine the health of their blood vessels. For Visit #2 they will be randomly given either antioxidant pills or placebo pills to determine the effect of oxidants on blood vessel health. For Visit #3, they will be given whatever set of pills (antioxidant or placebo) that they did not receive during Visit #2.


Recruitment information / eligibility

Status Recruiting
Enrollment 720
Est. completion date August 2024
Est. primary completion date August 2024
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 35 Years
Eligibility Inclusion Criteria: - apparently healthy and free of overt cardiovascular, pulmonary, or metabolic disease - for PTSD group, a score of = 33 on PCL-5 checklist - for GAD group, a score of = 10 on the GAD-7 self-report scale and < 33 on the PCL-5 checklist - for Healthy Control group, a score of = 10 on the GAD-7 self-report scale and < 33 on the PCL-5 checklist Exclusion Criteria: - taking medications that could influence cardiovascular function - current smokers who have recently quit smoking - illicit drug use or excessive alcohol consumption - pregnant women - significant calorie restriction or vitamin/mineral deficiencies - limited English proficiency

Study Design


Intervention

Dietary Supplement:
Antioxidant
Subjects will ingest an antioxidant cocktail containing 800 milligrams of alpha lipoic acid, 1 gram of vitamin C (ascorbic acid), and 400 milligrams of vitamin E (alpha tocopherol).
Placebo
Subjects will ingest placebo (microcrystalline cellulose) pills.

Locations

Country Name City State
United States Virginia Commonwealth University Richmond Virginia

Sponsors (1)

Lead Sponsor Collaborator
Virginia Commonwealth University

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Arm Vascular Function at Rest (Flow Mediated Dilation Test) Change in Brachial Artery Dilation from Baseline Values Baseline to the end of the final visit, about 2 weeks
Primary Leg Vascular Function (Passive Leg Movement Test) Change in Leg Blood Flow Values from Baseline Baseline to the end of the final visit, about 2 weeks
Primary Arm Vascular Function in Response to Exercise (Handgrip Exercise Test) Change in Brachial Artery Dilation from Baseline Values Baseline to the end of the final visit, about 2 weeks
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