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About VO2 Max. Estimates
VO2 max. is the maximum volume of oxygen (in milliliters) you can consume per minute per kilogram of body
weight at your maximum performance. In simple terms, VO2 max. is an indication of athletic performance and
should increase as your level of fitness improves. The fēnix device requires wrist-based heart rate or a
compatible chest heart rate monitor to display your VO2 max. estimate. The device has separate VO2 max.
estimates for running and cycling. You must run either outside with GPS or ride with a compatible power meter
at a moderate level of intensity for several minutes to get an accurate VO2 max. estimate.
On the device, your VO2 max. estimate appears as a number, description, and position on the color gauge. On
your Garmin Connect account, you can view additional details about your VO2 max. estimate, such as where it
ranks for your age and gender.
Purple
Superior
Blue
Excellent
Green
Good
Orange
Fair
Red
Poor
VO2 max. data is provided by Firstbeat Analytics
™
. VO2 max. analysis is provided with permission from The
Cooper Institute
®
. For more information, see the appendix (VO2 Max. Standard Ratings, page 115), and go to
www.CooperInstitute.org.
Getting Your VO2 Max. Estimate for Running
This feature requires wrist-based heart rate or a compatible chest heart rate monitor. If you are using a chest
heart rate monitor, you must put it on and pair it with your device (Pairing Your Wireless Sensors, page 98).
For the most accurate estimate, complete the user profile setup (Setting Up Your User Profile, page 52), and
set your maximum heart rate (Setting Your Heart Rate Zones, page 53). The estimate may seem inaccurate at
first. The device requires a few runs to learn about your running performance. You can disable VO2 max.
recording for ultra run and trail run activities if you do not want those run types to affect your VO2 max.
estimate (Turning Off VO2 Max. Recording, page 43).
1 Run for at least 10 minutes outdoors.
2 After your run, select Save.
3 Select UP or DOWN to scroll through the performance measurements.
TIP: You can select
to view additional information.
42 Heart Rate Features
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