For the assesment of whole body blood distribution during exercise, whole body ^<201>Thallium scintigraphy was performed in 18 normal subjects (control) and 15 patients with old myocardial infarction (OMI). We obtained the following parameters from whole body scintigraphy: (1)% Distribution (%D): the ratio of the scintiration counts of each organ to whole body counts (2)The ratio of the each organ %D to leg %D. Regression line between leg %D (Y-axis) and exercise loading amount (X-axis: exercise momentum × exercise time