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Consumer Sleep Technology
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Application US20160374569
Published 2016-12-29
Heart Rate Variability With Sleep Detection
A system uses continuous tracking of sleep activity and heart rate activity to evaluate heart rate variability immediately before transitioning to an awake state, e.g., at the end of the last phase of deep sleep. In particular, a wearable, continuous physiological monitoring system as described herein includes one or more sensors to detect sleep states, the transitions between sleep states, and the transitions from a sleep state to an awake state for a user. This information can be used in conjunction with continuously monitored heart rate data to calculate heart rate variability of the user at the end of the last phase of sleep preceding the user waking up. By using the history of heart rate data in conjunction with sleep activity in this manner, an accurate and consistent recovery score can be calculated based on heart rate variability.
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- 1. A method of operating a wearable, continuous physiological monitoring system comprising:
monitoring sleep states of a user over a period of time; monitoring a heart rate of the user substantially continuously with the wearable, continuous physiological monitoring system over the period of time; recording heart rate data within the period of time; detecting, within the period of time, a waking event at a transition from a last sleep state of the user to an awake state; calculating a heart rate variability of the user at an end of a most recent slow wave sleep state preceding the waking event based upon the heart rate data; and calculating a recovery score for the user based upon the heart rate variability from the end of the most recent slow wave sleep state preceding the waking event, the recovery score indicative of a level of recovery of the user's body and health after a period of physical exertion.
- 9. A system comprising:
a wearable housing; one or more sensors in the wearable housing; and a processor in communication with the one or more sensors, the processor configured to receive data from the one or more sensors to monitor sleep states of a user wearing the wearable housing over a period of time, to monitor a heart rate of the user substantially continuously over the period of time, to detect a waking event at a transition from a last sleep state of the user to an awake state, to calculate heart rate variability of the user at a moment in a most recent slow wave sleep state preceding the waking event based upon the heart rate, and to calculate a recovery score for the user based upon the heart rate variability from the most recent slow wave sleep state preceding the waking event.
- 16. A computer program product for determining physical recovery of a user wearing a continuous physiological monitoring device, the computer program product comprising computer executable code embodied in a non-transitory computer readable medium that, when executing on one or more computing devices, performs the steps of:
monitoring sleep states of the user; monitoring a heart rate of the user substantially continuously; recording the heart rate as heart rate data; detecting a waking event at a transition from a last sleep state of the user to an awake state; calculating a heart rate variability of the user at a moment in a most recent slow wave sleep state preceding the waking event based upon the heart rate; and calculating a recovery score for the user based upon the heart rate variability from the most recent slow wave sleep state preceding the waking event.
