METHOD AND SYSTEM TO CALIBRATE FITNESS LEVEL AND DIRECT CALORIE BURN USING MOTION, LOCATION SENSING, AND HEART RATE

摘要

The present disclosure relates generally to improving calorie expenditure prediction and tracking and, more particularly, to techniques for calibration and calorimetry using data from motions sensors and heart rate sensors. Embodiments of the present disclosure include a fitness tracking device and techniques for accurately tracking an individual's energy expenditure over time and over a variety of activities while wearing the fitness tracking device. In some embodiments, the fitness tracking device may be a wearable device. The wearable device may be worn on a wrist, such as a watch, and it may include one or more microprocessors, a display, and a variety of sensors, including a heart rate sensor and one or more motion sensors.

主权项

1. A method comprising:
determining, by a fitness tracking device, that a user of the fitness tracking device is engaged in an exercise session at an intensity level above a threshold intensity level; obtaining, by the fitness tracking device, a plurality of heart rate measurements of the user over a period of time during the exercise session, wherein the plurality of heart rate measurements comprises heart rate data from a heart rate sensor of the fitness tracking device; obtaining, by the fitness tracking device, motion data of the user over the period of time, wherein the motion data comprises a first plurality motion measurements from a first motion sensor of the fitness tracking device; determining, by the fitness tracking device, for each of the plurality of heart rate measurements, a corresponding work rate measurement, wherein the work rate measurement comprises a speed of the user at a corresponding time; estimating, by the fitness tracking device, for each of the plurality of heart rate measurements, a corresponding energy expenditure rate at the corresponding time using the corresponding work rate measurement; estimating an aerobic capacity of the user by applying, by the fitness tracking device, a regression analysis of the plurality of heart rate measurements and the corresponding energy expenditure rate for each of the plurality of heart rate measurements; and storing, by the fitness tracking device, the aerobic capacity of the user in a memory of the fitness tracking device.