subject- The ID number of the test subjectactivity- The type of activity performed during measurement (e.g. WALKING)
WALKING(value1): walkingWALKING_UPSTAIRS(value2): walking up a staircaseWALKING_DOWNSTAIRS(value3): walking down a staircaseSITTING(value4): sittingSTANDING(value5): standingLAYING(value6): laying down
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