Physiological Sampling During Predetermined Activities

A device comprising:

• one or more sensors configured to measure motion and output one or more motion signals indicative of the measured motion;
• one or more light sources configured to emit light;
• one or more light detectors configured to detect a reflection of the emitted light;
• and
• a processor configured to:
• identify a change from a first motion state to a second motion state based on the one or more motion signals;
• in response to identifying the change from the first motion state to the second motion state, determine that the measured motion matches a motion criteria;
• in accordance with the measured motion continuing to satisfy the motion criteria for a time threshold, determine whether the one or more motion signals are associated with a predetermined activity;
• and
• in accordance with determining that the one or more motion signals are associated with the predetermined activity:
• emit the light with the one or more light sources;
• detect the reflection of the emitted light with the one or more light detectors;
• and
• determine physiological information based on the reflection of the emitted light.

A method of operating a physiological measurement device, the method comprising:

• measuring motion of a user using a motion sensor at the physiological measurement device;
• outputting one or more signals indicative of the measured motion;
• identifying a change from a first motion state to a second motion state based on the one or more signals;
• in response to identifying the change from the first motion state to the second motion state, determining that the measured motion matches a motion criteria;
• in accordance with the measured motion continuing to satisfy the motion criteria for a time threshold, determining whether the one or more signals are associated with a predetermined activity;
• and
• in accordance with determining that the one or more signals are associated with the predetermined activity:
• emitting light with one or more light sources;
• detecting a reflection of the emitted light with one or more light detectors;
• and
• determining physiological information of the user based on the reflection of the emitted light.

A wearable electronic device comprising:

• a motion sensing unit comprising one or more motion sensors and configured to:
• detect, using the one or more motion sensors, motion data corresponding to motion of the wearable electronic device;
• determine whether the motion data meets one or more motion criteria for a time threshold;
• in accordance with measured motion continuing to satisfy the one or more motion criteria for the time threshold, determine whether one or more signals are associated with a predetermined activity;
• and
• output a signal in response to determining that the one or more signals are associated with the predetermined activity;
• and
• a physiological measurement unit comprising one or more light detectors and configured to initiate, using the one or more light detectors, measurement of physiological information in response to the signal.