---
title: HKMetadataKeyHeartRateRecoveryActivityDuration
framework: healthkit
role: symbol
role_heading: Global Variable
path: healthkit/hkmetadatakeyheartraterecoveryactivityduration
---

# HKMetadataKeyHeartRateRecoveryActivityDuration

## Declaration

```swift
let HKMetadataKeyHeartRateRecoveryActivityDuration: String
```

## See Also

### Vitals Sensors Keys

- [HKMetadataKeyBodyTemperatureSensorLocation](healthkit/hkmetadatakeybodytemperaturesensorlocation.md)
- [HKMetadataKeyHeartRateSensorLocation](healthkit/hkmetadatakeyheartratesensorlocation.md)
- [HKMetadataKeyHeartRateMotionContext](healthkit/hkmetadatakeyheartratemotioncontext.md)
- [HKPredicateKeyPathAverageHeartRate](healthkit/hkpredicatekeypathaverageheartrate.md)
- [HKMetadataKeyHeartRateRecoveryActivityType](healthkit/hkmetadatakeyheartraterecoveryactivitytype.md)
- [HKMetadataKeyHeartRateRecoveryMaxObservedRecoveryHeartRate](healthkit/hkmetadatakeyheartraterecoverymaxobservedrecoveryheartrate.md)
- [HKMetadataKeyHeartRateRecoveryTestType](healthkit/hkmetadatakeyheartraterecoverytesttype.md)
- [HKMetadataKeyVO2MaxTestType](healthkit/hkmetadatakeyvo2maxtesttype.md)