An implantable device that can automatically monitor and record patient activity as sensed by an activity monitor. In certain variations, the activity monitor can include an accelerometer providing three-axis acceleration signals and in other variations the activity sensor can include a position sensor, such as a GPS receiver. The implantable device automatically determines if patient activity exceeds a determined threshold and monitors and records a total equivalent distance traveled for a determined period, which may be set equal to a standard measure such as a six minute period. The device can monitor and record multiple periods of activity and the periods may be consecutive, overlapping, and/or separate in time. The device may store all activity records or selected records which may correspond to daily, weekly, or other periodic maxima.
An endurance calculation device according to the present invention includes: an acceleration sensor measuring acceleration acting on the subject; an impulse calculation unit calculating impulse acting on the subject based on a value of the acceleration outputted from the acceleration sensor; an output unit outputting walking information, which is information prompting the subject to increase walking speed from low speed to a maximum speed; and an endurance calculation unit calculating, based on a value of the impulse calculated by the impulse calculation unit, endurance of the subject corresponding to the value of the impulse after the first walking information is outputted by the output unit.
This document discusses, among other things, cardiac rhythm management systems, devices, and methods providing an exercise test interface. A patient exercise episode is identified using at least one predetermined criteria. Data associated with the episode is obtained. A summary of the episode is displayed for a user. The displayed summary includes at least one prognostic indicator obtained from the data associated with the episode. Examples of prognostic indicators include, among other things, ectopic beats, runs of ectopic beats, rate of decrease of heart rate during a post-exercise recovery portion of the episode, a maximum attained heart rate for comparison to a maximum age-predicted heart rate, as well as other prognostic indicators.
