WorkoutKit: Alert - HeartRateZoneAlert vs PowerZoneAlert

Question

arnaud512 OP

Created Jul ’23

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Hello, I'm trying to understand what's the difference between:

HeartRateZoneAlert: static func heartRate(zone: Int) -> Self
PowerZoneAlert : static func power(zone: Int) -> Self

And also, why HeartRate alerts support range, but Power doesn't support Range?

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Answer 1

tmiedema93 OP

Sep ’23

There is a difference between power and a Heartrate. Your power is for example the watts you produce when your are cycling. You can also set a zone for a power zone:

let powerMinValue = HKQuantity(unit .watt(), doubleValue: 250)
let powerMaxValue = HKQuantity(unit .watt(), doubleValue: 270)
let powerRange: WorkoutTargetType = .range(min: powerMinValue, max: powerMaxValue)
let powerAlert = WorkoutAlert(type: .currentPower, target: powerRange)

This can be seen on on this WWDC video

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