Kannettava laite aktiviteetin seuraamiseksi ja siihen liittyvä menetelmä

摘要

The invention relates to a device and method for monitoring physical activity of a person. The device comprises an acceleration sensor for providing acceleration data corresponding to movements of the person, a memory unit capable of storing an activity index value describing cumulative physical activity of the person, and data processing unit capable of being operated in at least a first activity monitoring mode in which the data processing unit is adapted to update the activity index value based on the acceleration data. In addition, the processing unit is, in the first activity monitoring mode, configured to determine if, and to update the activity index value only if, the acceleration data corresponds to walking- and/or running-related movements of the person. The invention allows for robust monitoring of activities that have an impact on fitness and health of individuals and reduce the risk of incorrect activity recordings.