Subjects are needed for a U.S. Navy-funded research study at Duke University Medical Center’s Center for Hyperbaric Medicine and Environmental Physiology.

Volunteers are needed for a research study of the effect of exercise while immersed to the neck in water on cardiac (heart) function.

Eligibility Requirements

Subjects must:

• Be 18 to 50 years of age
• Be physically fit (able to exercise constantly for 40 minutes)
• Have no physical impairment that would prevent them from participation

Study Requirements

Subjects will be instrumented with an intravenous catheter and have their heart and lungs studied with echocardiography, chest x-ray, and magnetic resonance imaging (MRI).

Prior to the study, subjects must come to the laboratory (for about three hours) for:

• A physical exam
• An exercise test
• Orientation
• Scheduling for the experimental day

The experimental day (lasting two to three hours) takes place at least three days later.

Compensation

Subjects will be paid $25 for the pre-screen and $150 for completion of the entire study.

For more information, contact Mike Natoli at 919-668-0017 or michael.natoli@duke.edu.