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Performing a Guided Test to Determine Your Lactate Threshold
This feature requires a Garmin chest heart rate monitor. Before you can perform the guided test, you must put
on a heart rate monitor and pair it with your device (Pairing Your Wireless Sensors, page 73).
The device uses your user profile information from the initial setup and your VO2 max. estimate to estimate
your lactate threshold. The device will automatically detect your lactate threshold during runs at a steady, high
intensity with heart rate.
TIP: The device requires a few runs with a chest heart rate monitor to get an accurate maximum heart rate value
and VO2 max. estimate. If you are having trouble getting a lactate threshold estimate, try manually lowering
your maximum heart rate value.
1 From the watch face, select START.
2 Select an outdoor running activity.
GPS is required to complete the test.
3 Hold .
4 Select Training > Lactate Threshold Guided Test.
5 Start the timer, and follow the on-screen instructions.
After you begin your run, the device displays each step duration, the target, and current heart rate data. A
message appears when the test is complete.
6 After you complete the guided test, stop the timer and save the activity.
If this is your first lactate threshold estimate, the device prompts you to update your heart rate zones based
on your lactate threshold heart rate. For each additional lactate threshold estimate, the device prompts you
to accept or decline the estimate.
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