Activity intensity level determination
According to an example aspect of the present invention, there is provided an apparatus comprising memory configured to store a user-specific calibration metric, at least one processing core, configured to determine an activity type identifier of an activity a user is engaged in, and to determine a user-specific intensity level of the activity, wherein determining the user-specific intensity level is based at least partly on the identifier of the activity type, the user-specific calibration metric and data obtained from a kinematic sensor, and to obtain the user-specific calibration metric by performing a calibration procedure.
1. An apparatus comprising:
memory configured to store a user-specific calibration metric;
at least one processing core, configured to determine an activity type identifier of an activity a user is engaged in, and to determine a user-specific intensity level of the activity, wherein determining the user-specific intensity level is based at least partly on the identifier of the activity type, the user-specific calibration metric and data obtained in the apparatus from a kinematic sensor, and to obtain the user-specific calibration metric by performing a calibration procedure which takes into account an aerobic capacity of the user, wherein the user-specific calibration metric comprises a mapping from a set of kinematic sensor data characteristics to a set of user-specific intensity levels.
2. The apparatus according to claim 1 , wherein the kinematic sensor comprises at least one of an acceleration sensor and an angular velocity sensor.
3. The apparatus according to claim 1 , wherein the calibration procedure includes obtaining heart rate data from a heart rate sensor.
4. The apparatus according to claim 1 , wherein the at least one processing core is configured to determine the activity type identifier based on sensor data obtained during the activity.
5. The apparatus according to claim 4 , wherein the at least one processing core is configured to obtain the sensor data from the kinematic sensor.
6. The apparatus according to claim 1 , wherein the at least one processing core is configured to determine the activity type identifier based on an identifier of an activity-type specific utensil the user uses during the activity.
7. The apparatus according to claim 6 , wherein the activity-type specific utensil comprises at least one of: a tennis racket, a squash racket and boxing gloves.
8. A method comprising:
storing, in an apparatus, a user-specific calibration metric;
determining an activity type identifier of an activity a user is engaged in;
determining a user-specific intensity level of the activity, wherein determining the user-specific intensity level is based at least partly on the identifier of the activity type, the user-specific calibration metric and data obtained in the apparatus from a kinematic sensor, and
obtaining the user-specific calibration metric by performing a calibration procedure which takes into account an aerobic capacity of the user, wherein the user-specific calibration metric comprises a mapping from a set of kinematic sensor data characteristics to a set of user-specific intensity levels.
9. The method according to claim 8 , wherein the kinematic sensor comprises at least one of an acceleration sensor and an angular velocity sensor.
10. The method according to claim 8 , wherein the calibration procedure includes obtaining heart rate data from a heart rate sensor.
11. The method according to claim 8 , wherein the activity type identifier is determined based on sensor data obtained during the activity.
12. The method according to claim 11 , further comprising obtaining the sensor data from the kinematic sensor.
13. The method according to claim 8 , wherein the activity type identifier is determined based on an identifier of an activity-type specific utensil the user uses during the activity.
14. The method according to claim 13 , wherein the activity-type specific utensil comprises at least one of: a tennis racket, a squash racket and boxing gloves.
15. A non-transitory computer readable medium having stored thereon a set of computer readable instructions that, when executed by at least one processor, cause an apparatus to at least:
store, in an apparatus, a user-specific calibration metric;
determine an activity type identifier of an activity a user is engaged in;
determine a user-specific intensity level of the activity, wherein determining the user-specific intensity level is based at least partly on the identifier of the activity type, the user-specific calibration metric and data obtained in the apparatus from a kinematic sensor, and
obtain the user-specific calibration metric by performing a calibration procedure which takes into account an aerobic capacity of the user, wherein the user-specific calibration metric comprises a mapping from a set of kinematic sensor data characteristics to a set of user-specific intensity levels.