User manual

Getting Your VO2 Max. Estimate for Cycling
This feature requires a power meter and wrist-based heart rate or a compatible chest heart rate monitor. The
power meter must be paired with your D2 Mach 1 device (Pairing Your Wireless Sensors, page 79). If you are
using a chest heart rate monitor, you must put it on and pair it with your device.
For the most accurate estimate, complete the user profile setup (Setting Up Your User Profile, page 94) and set
your maximum heart rate (Setting Your Heart Rate Zones, page 95). The estimate may seem inaccurate at first.
The device requires a few rides to learn about your cycling performance.
1 Ride at a steady, high intensity for at least 20 minutes.
2 After your ride, select Save.
3 Select UP or DOWN to scroll through the performance measurements.
TIP: You can select START to view additional information.
Viewing Your Predicted Race Times
For the most accurate estimate, complete the user profile setup (Setting Up Your User Profile, page 94), and set
your maximum heart rate (Setting Your Heart Rate Zones, page 95).
Your watch uses the VO2 max. estimate (About VO2 Max. Estimates, page 57) and your training history to
provide a target race time. The watch analyzes several weeks of your training data to refine the race time
estimates.
TIP: If you have more than one Garmin device, you can enable the Physio TrueUp
™
feature, which allows your
watch to sync activities, history, and data from other devices (Syncing Activities and Performance
Measurements, page 111).
1 From the watch face, press UP or DOWN to view the performance glance.
2 Press START to view glance details.
3 Press UP or DOWN to view a predicted race time.
4 Press START to view predictions for other distances.
NOTE: The predictions may seem inaccurate at first. The watch requires a few runs to learn about your
running performance.
Heart Rate Variability and Stress Level
Stress level is the result of a three-minute test performed while standing still, where the D2 Mach 1 device
analyzes heart rate variability to determine your overall stress. Training, sleep, nutrition, and general life stress
all impact how a runner performs. The stress level range is from 1 to 100, where 1 is a very low stress state and
100 is a very high stress state. Knowing your stress level can help you decide if your body is ready for a tough
training run or yoga.
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