Wearable computer with fitness machine connectivity for improved activity monitoring using caloric expenditure models

A wireless wearable computer, comprising:

• one or more motion sensors;
• a heart rate sensor;
• one or more processors;
• memory storing instructions that when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• establishing a wireless communication connection with a fitness machine;
• obtaining, using the communication connection, machine data from the fitness machine while a user is engaged in a workout session on the fitness machine and wearing the wireless wearable computer, the machine data comprising first data that describes the fitness machine and second data that describes fitness metrics associated with the workout session and that are specific to the fitness machine;
• obtaining, from the heart rate sensor, heart rate data of the user;
• determining a calibrated maximal oxygen consumption of the user based on the heart rate data and the machine data;
• determining a heart rate caloric expenditure based on the heart rate data and the calibrated maximal oxygen consumption of the user;
• and
• providing information corresponding to the heart rate caloric expenditure for presentation.

One or more non-transitory computer-readable media comprising computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:

• establishing, by one or more processors of a wireless wearable computer worn by a user, a wireless communication connection with a fitness machine;
• obtaining, by the one or more processors using the wireless communication connection, machine data from the fitness machine while the user is engaged in a workout session on the fitness machine, the machine data comprising first data that describes the fitness machine and second data that describes fitness metrics associated with the workout session and that are specific to the fitness machine;
• obtaining, from a heart rate sensor of the wireless wearable computer, heart rate data of the user;
• determining, by the one or more processors, a calibrated maximal oxygen consumption of the user based on the heart rate data and the machine data;
• determining, by the one or more processors, a heart rate caloric expenditure based on the heart rate data and the calibrated maximal oxygen consumption of the user;
• and
• providing, by the one or more processors, information corresponding to the heart rate caloric expenditure for presentation.