A rehabilitation assistance system (1) comprises: a data acquisition unit (10) that acquires sensor data including biological information; an activity volume calculation unit (120) that calculates the activity volume associated with user activity on the basis of acquired sensor data; an accumulated value calculation unit (121) that calculates the accumulated value of the activity volume of the user within a preset period; a display processing unit (13) that generates an image item in accordance with the accumulated value; and a second display unit (16) that displays the image item generated by the display processing unit (13) on a display screen. A plurality of preset periods are included within a user activity period.
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