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Performance Measurements
These performance measurements are estimates that can help you track and understand your training activities
and race performances. The measurements require a few activities using wrist-based heart rate or a compatible
chest heart rate monitor. Cycling performance measurements require a heart rate monitor and a power meter.
These estimates are provided and supported by Firstbeat Analytics
™
. For more information, go to garmin.com
/performance-data/running.
NOTE: The estimates may seem inaccurate at first. The watch requires you to complete a few activities to learn
about your performance.
VO2 max.: VO2 max. is the maximum volume of oxygen (in milliliters) you can consume per minute per kilogram
of body weight at your maximum performance (About VO2 Max. Estimates, page 52).
Predicted race times: Your watch uses the VO2 max. estimate and your training history to provide a target race
time based on your current state of fitness (Viewing Your Predicted Race Times, page 53).
HRV stress test: The heart rate variability (HRV) stress test requires a Garmin chest heart rate monitor. The
watch records your heart rate variability while standing still for 3 minutes. It provides your overall stress level.
The scale is 1 to 100, and a lower score indicates a lower stress level (Heart Rate Variability and Stress Level,
page 54).
Performance condition: Your performance condition is a real-time assessment after 6 to 20 minutes of activity.
It can be added as a data field so you can view your performance condition during the rest of your activity. It
compares your real-time condition to your average fitness level (Performance Condition, page 54).
Functional threshold power (FTP): The watch uses your user profile information from the initial setup to
estimate your FTP. For a more accurate rating, you can conduct a guided test (Getting Your FTP Estimate,
page 55).
Lactate threshold: Lactate threshold requires a chest heart rate monitor. Lactate threshold is the point where
your muscles start to rapidly fatigue. Your watch measures your lactate threshold level using heart rate data
and pace (Lactate Threshold, page 56).
Stamina: The watch uses your VO2 max. estimate and heart rate data to provide real-time stamina estimates. It
can be added as a data screen so you can view your potential and current stamina during your activity
(Viewing Your Real-Time Stamina, page 57).
Appearance 51
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