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Purpose Regadenoson, an A2A adenosine receptor pharmacologic stress agent for radionuclide myocardial perfusion imaging (MPI), is administered as a single, fixed dose. We studied the side effect profile of regadenoson combined with two types of low-level exercise, according to body mass index (BMI). Methods Three hundred and fifty-six patients (46.1% men, mean age 67.7±10.7 years, range 31–90 years)...