Activity monitoring systems and methods of operating same

An activity monitoring system comprising:

• a plurality of fixtures, wherein each fixture includes a physical size and shape that is adapted to couple to an associated location on the body of the user;
• a portable monitoring device adapted to separately and physically engage each fixture of the plurality of fixtures, the portable monitoring device including:
• a housing to separately and physically engage each fixture;
• an activity sensor, disposed in the housing, to detect activity of the user and, in response thereto, to generate data which is representative of the activity of the user;
• a physiological sensor, disposed in the housing, to detect physiological data of the user and, in response thereto, to generate data which is representative of at least one physiological condition of the user, and
• processing circuitry, disposed in the housing and coupled to the activity sensor, to calculate one or more activity-related quantities of the user using the data which is representative of the activity of the user, wherein the processing circuitry:
• determines a particular fixture of the plurality of fixtures is physically engaging the portable monitoring device,
• calculates at least one activity-related quantity of the user which is associated with the particular fixture, and
• calculates at least one physiological-related quantity of the user.

An activity monitoring system comprising:

• a plurality of fixtures, wherein each fixture includes a physical size and shape that is adapted to couple to an associated location on the body of the user;
• a portable monitoring device adapted to separately and physically engage each fixture of the plurality of fixtures, the portable monitoring device including:
• a housing to separately and physically engage each fixture;
• an activity sensor, disposed in the housing, to detect activity of the user and, in response thereto, to generate data which is representative of the activity of the user;
• an environmental sensor, disposed in the housing, to detect at least one ambient environmental condition and, in response thereto, to generate data which is representative of at least one environmental condition, and
• processing circuitry, disposed in the housing and coupled to the activity sensor, to calculate one or more activity-related quantities of the user using the data which is representative of the activity of the user, wherein the processing circuitry:
• determines a particular fixture of the plurality of fixtures is physically engaging the portable monitoring device,
• calculates at least one activity-related quantity of the user which is associated with the particular fixture, and
• calculates at least one at least one ambient environmental-related quantity.