Global Variable

HKMetadataKeyHeartRateEventThreshold

A key that records the threshold of high or low heart rate events in beats per minute.

Declaration

NSString *const HKMetadataKeyHeartRateEventThreshold;

Discussion

The value for this key contains an HKQuantity object with count/time units, described in HKUnit. This metadata key is used by HKCategoryTypeIdentifierHighHeartRateEvent and HKCategoryTypeIdentifierLowHeartRateEvent category samples.