What Affects WHOOP Accuracy?

How to Ensure Optimal Accuracy

  1. Make sure the sensor on your WHOOP Strap is clean.
    • A lot of WHOOP members will wear their WHOOP Strap into the shower and wash the band with warm, soapy water, but forget to wash the sensor.
    • Make sure to wash the sensor area where the green LEDs shine as filmy residue may build up over time and pat dry when finished. 

  2. Make sure the sensor is tight against the skin. If you can see the green sensor LEDs shining out while wearing your WHOOP Strap, it isn't tight enough. 

  3. If comfortable for you, move the WHOOP Strap up further up the arm (closer to your elbow).  Some members find that putting it higher up the arm is a better way to capture heart rate accurately, especially if you have a smaller wrist.

  4. Make sure your WHOOP Strap is threaded correctly. If threaded incorrectly, the band may loosen up, which can impact readings. This video demonstrates how to thread the band properly.

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Additional Accuracy Information

In some cases, excessive hand motion may cause the Strap to move against the skin, making it difficult to detect true HR. This may result in what looks like a false high heart rate.

WHOOP has been put through rigorous quality testing and validated against typical use cases to ensure that arm movement within the expected scope of activity should not generate these results.

Momentary increase in the estimated heart rate is expected when the quality of the data is poor. This information is taken into account when subsequent metrics are calculated.

In the Strain metric calculation, accelerometer data and heart rate are used.

 

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