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
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 61
).
Predicted race times: The 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 62
).
HRV status: The watch analyzes your wrist heart rate readings while you are sleeping to determine your heart
rate variability (HRV) status based on your personal, long-term HRV averages (
Heart Rate Variability Status,
).
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 64
).
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 (
).
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 (
).
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 67
).
Power curve (cycling): The power curve displays your sustained power output over time. You can view your
power curve for the previous month, three months, or twelve months (
Viewing Your Power Curve, page 67
).
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