Peripheral Vascular Diseases
Conditions
Keywords
cardiovascular disease, vascular function, PTSD, GAD, Oxidant
Brief summary
The purpose of this research study is to examine the effect of various forms of exercise training on blood vessel function in healthy individuals as well as individuals with mental health disorders (posttraumatic stress disorder (PTSD) and/or generalized anxiety disorder (GAD)).
Detailed description
Study #2 is made up of five sessions done on five separate days and the entire study can be completed in as little as 14 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. also include two additional testing days (Visits 5 and 6) that are identical to Visits #2 and #3, two visits to test endurance or strength prior to and after the exercise training (Visit 4 and 7), and ten weeks of exercise training (done 3-5 days per week). The exercise training will include one of three treadmill running programs that differ by exercise intensity and/or exercise frequency.
Interventions
BEHAVIORALModerate Intensity, Normal Volume Exercise Training
Week 1 3 days/week for 20 minutes/day Performed at 70% of heart rate maximum Week 2 3 days/week for 30 minutes/day Performed at 70% of heart rate maximum Weeks 3-10 3 days/week for 45 minutes/day Performed at 70% of heart rate maximum
BEHAVIORALHigh Intensity, Normal Volume Exercise Training
Week 1 3 days/week for 31 minutes/day 10 minute warm up at 50% of heart rate maximum 2 x 4 minute intervals 4 minutes at 90-95% of heart rate maximum 3 minutes at 70% of heart rate maximum REPEAT 7 minute cool down at 50% of heart rate maximum Week 2 3 days/week for 38 minutes/day 10 minute warm up at 50% of heart rate maximum 3 x 4 minute intervals 4 minutes at 90-95% of heart rate maximum 3 minutes at 70% of heart rate maximum REPEAT 2 TIMES 7minute cool down at 50% of heart rate maximum Weeks 3-10 3 days/week for 45 minutes/day 10 minute warm up at 50% of heart rate maximum 4 x 4 minute intervals 4 minutes at 90-95% of heart rate maximum 3 minutes at 70% of heart rate maximum REPEAT 3 TIMES 7 minute cool down at 50% of heart rate maximum
BEHAVIORALModerate Intensity, High Volume Exercise Training
Week 1 5 days/week for 20 minutes/day Performed at 70% of heart rate maximum Week 2 5 days/week for 30 minutes/day Performed at 70% of heart rate maximum Weeks 3-10 5 days/week for 45 minutes/day Performed at 70% of heart rate maximum
Sponsors
Virginia Commonwealth University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 35 Years
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Arm Vascular Function at Rest (Flow Mediated Dilation Test) | Baseline to the end of the final visit, about 14 weeks | Change in Brachial Artery Dilation from Baseline Values |
| Leg Vascular Function (Passive Leg Movement Test) | Baseline to the end of the final visit, about 14 weeks | Change in Leg Blood Flow Values from Baseline |
| Arm Vascular Function in Response to Exercise (Handgrip Exercise Test) | Baseline to the end of the final visit, about 14 weeks | Change in Brachial Artery Dilation from Baseline Values |
Countries
United States
Contacts
Primary ContactRyan Garten, PhD
Outcome results
None listed