Garmin 010-02156-12 Forerunner 45S

User Manual - Page 26

For 010-02156-12.

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Setting Your Maximum Heart Rate
The device uses your user profile information from the initial setup to estimate your maximum heart rate and
determine your default heart rate zones. The default maximum heart rate is 220 minus your age. For the most
accurate calorie data during your activity, you should set your maximum heart rate (if known).
1 From the watch face, hold UP.
2 Select > User Profile > Max. HR.
3 Enter your maximum heart rate.
Customizing Your Heart Rate Zones and Maximum Heart Rate
You can customize your heart rate zones based on your training goals. The device uses your user profile
information from the initial setup to estimate your maximum heart rate and determine your default heart rate
zones. The default maximum heart rate is 220 minus your age. For the most accurate calorie data during your
activity, you should set your maximum heart rate (if known).
1 From the Garmin Connect app, select or .
2 Select Garmin Devices.
3 Select your device.
4 Select User Settings > Heart Rate Zones > Running Zones.
5 Enter your heart rate values for each zone.
6 Enter your maximum heart rate.
7 Select Save.
Heart Rate Zone Calculations
Zone
% of Maximum Heart
Rate
Perceived Exertion Benefits
1 50–60% Relaxed, easy pace, rhythmic breathing
Beginning-level aerobic training,
reduces stress
2 60–70%
Comfortable pace, slightly deeper
breathing, conversation possible
Basic cardiovascular training, good
recovery pace
3 70–80%
Moderate pace, more difficult to hold
conversation
Improved aerobic capacity, optimal
cardiovascular training
4 80–90%
Fast pace and a bit uncomfortable,
breathing forceful
Improved anaerobic capacity and
threshold, improved speed
5 90–100%
Sprinting pace, unsustainable for long
period of time, labored breathing
Anaerobic and muscular endurance,
increased power
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 ANT+ Sensors, page 28).
For the most accurate estimate, complete the user profile setup (Setting Up Your User Profile, page 30), and
set your maximum heart rate (Setting Your Maximum Heart Rate, page 20). The estimate may seem inaccurate
at first. The device requires a few runs to learn about your running performance.
1 Run for at least 10 minutes outdoors.
2 After your run, select Save.
A notification appears to display your first VO2 max. estimate and each time your VO2 max. increases.
20 Heart Rate Features
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