Determining recovery indicator with a measured resting heart rate

Abstract

Embodiments provide physiological measurement systems, devices, and methods for continuous health and fitness monitoring. A wearable strap may detect reflected light from a user's skin, where data corresponding to the reflected light is used to automatically and continually determine physiological attributes of the user. In particular, the wearable strap may be used to monitor heart rate data including a resting heart rate, a heart rate variability, and sleep quality—e.g., to generate a recovery indicator that provides a quantitative assessment of a physical recovery state of the user indicating whether the user is recovered and ready for exercise.

What is claimed is: 
     
         1 . A system comprising:
 a remote server;   a wearable strap, the wearable strap couplable to an appendage of a user, the wearable strap including one or more light emitters for emitting light toward a user's skin, one or more light detectors for receiving light from the one or more light emitters reflected from the user's skin, a memory, and a processor; and   a user device configured to receive a data transmission wirelessly from the wearable strap when in proximity thereto, and to stream physiological data from the wearable strap to the remote server, the user device further configured to download processed data from the remote server for display,   wherein the processor of the wearable strap is configured by computer executable instructions stored in the memory and executable by the processor to continuously monitor data from the one or more light detectors of the wearable strap and to transmit the continuously monitored data to the user device for upload to the remote server,   wherein the remote server is configured by second computer executable instructions stored in a second memory and executable by a second processor of the remote server to receive the continuously monitored data and to:
 calculate continuous heart rate data based on the continuously monitored data, 
 calculate, at least daily, a resting heart rate for the user based on an analysis of the continuous heart rate data acquired by monitoring data from the wearable strap, 
 calculate a heart rate variability based on the continuous heart rate data, 
 convert a time series of heart rate data into a normalized time series of heart rate data based on the resting heart rate derived from the continuous heart rate data, 
 automatically detect a physical recovery state of the user during which the user is sleeping based on continuous data collected by the wearable strap, 
 calculate a sleep quality indicator of the physical recovery state, and 
 generate a recovery indicator that provides a quantitative assessment of the physical recovery state of the user indicating whether the user is recovered and ready for exercise based on at least the resting heart rate, the heart rate variability, the normalized time series of heart rate data, the resting heart rate, and the sleep quality indicator, and 
   wherein the user device is configured to retrieve from the remote server and display, within a user interface rendered on the user device, the recovery indicator.   
     
     
         2 . The system of  claim 1 , wherein the remote server is further configured to update the recovery indicator based on activity of the user detected after generation of the recovery indicator. 
     
     
         3 . The system of  claim 1 , wherein the remote server is further configured to update the recovery indicator based on physiological data acquired from the wearable strap after generation of the recovery indicator. 
     
     
         4 . The system of  claim 1 , wherein the remote server is further configured to:
 automatically detect exercise activity of the user; and   generate an intensity score that provides a quantitative assessment of an intensity of the exercise activity using a weighted sum of the normalized time series of heart rate data acquired during the exercise activity.   
     
     
         5 . The system of  claim 4 , wherein the quantitative assessment of the physical recovery state is based on a weighted combination of the heart rate variability, the resting heart rate, the sleep quality indicator, and the intensity score. 
     
     
         6 . The system of  claim 1 , wherein the sleep quality indicator is indicative of at least one of a duration of sleep, a level of movement of the user during sleep, a number of times the user wakes up during sleep, and an efficiency of sleep by the user during the physical recovery state. 
     
     
         7 . The system of  claim 1 , wherein calculating the heart rate variability includes at least one of: photoplethysmography variability data correlated to cardiac cycles; and variability data indicative of fluctuations in an inter-heartbeat interval time. 
     
     
         8 . The system of  claim 1 , wherein calculating the heart rate variability is based at least in part on at least one of: a morning heart rate variability; and a baseline heart rate variability measured over two or more days. 
     
     
         9 . The system of  claim 1 , wherein the remote server calculates the resting heart rate as a moving average of resting heart rates. 
     
     
         10 . The system of  claim 1 , wherein the remote server calculates the resting heart rate using a smoothing operation to distinguish changes from normal fluctuations. 
     
     
         11 . A system comprising:
 a remote server;   a wearable strap, the wearable strap couplable to an appendage of a user, the wearable strap including one or more light emitters for emitting light toward a user's skin, one or more light detectors for receiving light from the one or more light emitters reflected from the user's skin, a memory, and a processor; and   computer executable code executing on a user device, the computer executable code configuring the user device to receive a data transmission wirelessly from the wearable strap when in proximity thereto, and to stream physiological data from the wearable strap to the remote server,   wherein the processor of the wearable strap is configured by computer executable instructions stored in the memory and executable by the processor to monitor signals from the one or more light detectors of the wearable strap and to transmit physiological data based on the monitored signals to the user device for upload to the remote server,   wherein the remote server is configured by second computer executable instructions stored in a second memory and executable by a second processor of the remote server to receive the physiological data and to:
 calculate continuous heart rate data based on the physiological data, 
 calculate, at least daily, a resting heart rate metric for the user based on an analysis of the continuous heart rate data, 
 calculate a heart rate variability metric based on the continuous heart rate data, 
 automatically detect a sleep state of the user during which the user is sleeping based on data collected from the wearable strap, 
 calculate a sleep quality indicator for the sleep state, and 
 generate a recovery indicator that provides a quantitative assessment indicating whether the user is recovered and ready for exercise based on at least the resting heart rate metric, the heart rate variability metric, and the sleep quality indicator, and 
   wherein the user device is further configured by the computer executable code executing on the user device to retrieve from the remote server and display, within a user interface rendered on the user device, the recovery indicator.   
     
     
         12 . The system of  claim 11 , wherein the remote server is further configured to update the recovery indicator based on activity of the user detected after generation of the recovery indicator. 
     
     
         13 . The system of  claim 11 , wherein the remote server is further configured to update the recovery indicator based on physiological data acquired from the wearable strap after generation of the recovery indicator. 
     
     
         14 . The system of  claim 11 , wherein the remote server is further configured to calculate a normalized heart rate metric based on the resting heart rate metric, wherein generation of the recovery indicator is further based on the normalized heart rate metric. 
     
     
         15 . The system of  claim 14 , wherein the normalized heart rate metric includes a time series of normalized heart rate measurements. 
     
     
         16 . The system of  claim 14 , wherein the normalized heart rate metric includes weighted heart rate metric values. 
     
     
         17 . The system of  claim 16 , wherein the normalized heart rate metric includes a weighted sum of a time series of normalized heart rate measurements. 
     
     
         18 . The system of  claim 11 , wherein the heart rate variability metric is based on at least one of: a morning heart rate variability, a heart rate variability during sleep, and a baseline heart rate variability measured over two or more days. 
     
     
         19 . The system of  claim 11 , wherein the user device is further configured to display, in the user interface, qualitative information on a user's health corresponding to the recovery indicator. 
     
     
         20 . The system of  claim 11 , wherein the remote server is further configured to:
 based on the recovery indicator, automatically alter an exercise plan according to one or more health goals of the user; and   transmit to the user device for display, in the user interface of the user device, the altered exercise plan.