---
title: CMHighFrequencyHeartRateData
framework: coremotion
role: symbol
role_heading: Class
path: coremotion/cmhighfrequencyheartratedata
---

# CMHighFrequencyHeartRateData

A class that represents heart rate data collected at 1 Hz.

## Declaration

```swift
class CMHighFrequencyHeartRateData
```

## Overview

Overview Use the heartRate property to get the data, and the confidence property for the accuracy.

## Topics

### Accessing heart rate data

- [heartRate](coremotion/cmhighfrequencyheartratedata/heartrate.md)
- [confidence](coremotion/cmhighfrequencyheartratedata/confidence.md)
- [CMHighFrequencyHeartRateDataConfidence](coremotion/cmhighfrequencyheartratedataconfidence.md)

### Getting the sample date

- [date](coremotion/cmhighfrequencyheartratedata/date.md)

## Relationships

### Inherits From

- [CMLogItem](coremotion/cmlogitem.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)

## See Also

### Pedometer and fitness

- [CMPedometer](coremotion/cmpedometer.md)
- [CMPedometerData](coremotion/cmpedometerdata.md)
- [CMPedometerEvent](coremotion/cmpedometerevent.md)
- [CMStepCounter](coremotion/cmstepcounter.md)
- [CMOdometerData](coremotion/cmodometerdata.md)