The purpose of this voluntary research study is to test the effects of exercise on reduction in blood flow to exercising muscle.

You will be asked to participate in one visit to perform handgrip exercise and foot exercises with, and without a blood pressure cuff inflated on your arm and leg. Various physiological measurements will be recorded during this time including microneurography, blood pressure, heart rate, blood flow and muscle oxygenation.

You will receive $25 per hour for your participation in this research study

The purpose of this study is to determine if, compared to non-depressed adults, differences exist in skin blood flow and sweating responses to passive heat stress in adults with clinically diagnosed depression, those with depression who are prescribed and taking SSRIs (Selective Serotonin reuptake inhibitors) and those with depression who are prescribed and taking SNRIs (Serotonin-Norepinephrine reuptake inhibitors).

For this study, you will be asked to come into the lab for a screening visit, a maximal exercise test visit, and one experimental visits. *Before the experimental visit, you will be asked to swallow a temperature-sensing capsule to measure your internal body temperature 1-2 hours prior to arriving at the lab. During the passive heat stress experiment, you will wear a suit lined with tubing through which hot water will run, causing your body to warm up. We measure your sweat and skin blood flow responses.

50

This study will examine the impact of age, sex, and racial/ethnic background on vascular function.

There will be three (3) in-person visits: one screening, one experimental visit, and one visit to return equipment. Equipment includes a 24-hour Ambulatory Blood Pressure monitor and an 8-day accelerometer (physical activity tracker). Blood will be drawn at the screening and experimental visit. Participants will undergo tests for cardiovascular measures during the experimental visit.

$100

This research looks at whether atherosclerosis, which is the buildup of fatty deposits in the arteries, affects how nitric oxide works to control blood pressure. Nitric oxide is a substance in the body that helps blood vessels relax and widen. By studying how these two factors interact, we hope to better understand them, which could lead to improved treatments for patients in the future. However, this study does not provide treatment for patients with heart or blood vessel diseases.

You will be asked to participate in one visit and to receive a medication called sublingual nitroglycerin. Various physiological measurements will be recorded during this time including microneurography, blood pressure, heart rate and blood flow.

You will receive $25 per hour for your participation in this research study