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# predicateForWorkouts(operatorType:quantityType:maximumQuantity:)

Returns a predicate for matching workout activities based the maximum value of an associated quantity type.

```
class func predicateForWorkouts(operatorType: NSComparisonPredicate.Operator, quantityType: HKQuantityType, maximumQuantity: HKQuantity) -> NSPredicate
```

## Parameters

`operatorType`

The operator type to use when comparing the maximum quantity.

`quantityType`

The type of [`HKQuantitySample`](/documentation/HealthKit/HKQuantitySample) objects used to calculate the maximum quantity.

`maximumQuantity`

The target value for the maximum quantity.

## Discussion

Use this convenience method to create a predicate that matches workouts with the specified maximum quantity. For more information on how HealthKit calculates statistics for [`HKWorkoutActivity`](/documentation/HealthKit/HKWorkoutActivity) objects, see [`statistics(for:)`](/documentation/HealthKit/HKWorkoutActivity/statistics(for:)).

The following sample creates a predicate for workout activities with a maximum heart rate of 150 bmp or higher.

```swift
let quantityType = HKQuantityType(.heartRate)

let expectedQuantity =
HKQuantity(unit: .count().unitDivided(by: .minute()),
           doubleValue: 150.0)

let heartRatePredicate = HKQuery.predicateForWorkouts(
    operatorType: .greaterThanOrEqualTo,
    quantityType: quantityType,
    maximumQuantity: expectedQuantity)
}
```

---

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