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# monitorKinesias(forDuration:)

Calculate and store tremor and dyskinetic symptom results for the duration of the specified time interval.

```
func monitorKinesias(forDuration duration: TimeInterval)
```

## Parameters

`duration`

The monitoring duration in seconds. The maximum duration is seven days.

## Discussion

Call this method to begin monitoring, calculating, and storing tremor and dyskinetic symptom results. The manager stores results for a period of seven days after the time of recording. You can access the results at any time within that seven-day interval, after which they expire. To retrieve these results, call the [`queryTremor(from:to:withHandler:)`](/documentation/CoreMotion/CMMovementDisorderManager/queryTremor(from:to:withHandler:)) and [`queryDyskineticSymptom(from:to:withHandler:)`](/documentation/CoreMotion/CMMovementDisorderManager/queryDyskineticSymptom(from:to:withHandler:)) methods.

To determine whether the results are currently being monitored and calculated, call the [`monitorKinesiasExpirationDate()`](/documentation/CoreMotion/CMMovementDisorderManager/monitorKinesiasExpirationDate()) method. The maximum monitoring duration is seven days. In order to continue monitoring beyond the expiration date, you need to renew your subscription by calling [`monitorKinesias(forDuration:)`](/documentation/CoreMotion/CMMovementDisorderManager/monitorKinesias(forDuration:)) again before the monitoring period expires. Note that repeated calls allow you to extend monitoring, but not shorten it.

## See Also

[`-  queryTremorFromDate:toDate:withHandler:`](/documentation/CoreMotion/CMMovementDisorderManager/queryTremor(from:to:withHandler:))

Query for tremor results from the provided time interval.

[`-  queryDyskineticSymptomFromDate:toDate:withHandler:`](/documentation/CoreMotion/CMMovementDisorderManager/queryDyskineticSymptom(from:to:withHandler:))

Query for dyskinetic symptoms from the provided time interval.


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