My research program has two main streams. Stream 1 is focused on understanding the neural mechanisms regulating blood pressure at rest and during stress, with particular emphasis on variability between subjects. We are currently examining the causes of a large blood pressure response to exercise, a risk factor for hypertension and mortality. Stream 2 is focused on determining the optimal benefits of exercise training in different populations. We are currently completing a clinical trial comparing the efficacy of two exercise modes in patients with Parkinson's disease.