Letting The Watch Set Your Heart Rate Zones; Heart Rate Zone Calculations; Setting Your Power Zones; Detecting Performance Measurements Automatically - Garmin FORERUNNER 255 Series Owner's Manual

Measurements Automatically, page
4 Select LTHR, and enter your lactate threshold heart
rate.
You can perform a guided test to estimate
your lactate threshold
13). You can use the Auto Detection feature to
automatically record your lactate threshold during
an activity (Detecting Performance Measurements
Automatically, page 35).
5 Select Resting HR > Set Custom, and enter your
resting heart rate.
You can use the average resting heart rate
measured by your watch, or you can set a custom
resting heart rate.
6 Select Zones > Based On.
7 Select an option:
• Select BPM to view and edit the zones in beats
per minute.
• Select %Max� HR to view and edit the zones as a
percentage of your maximum heart rate.

Heart Rate Zone Calculations

% of Maximum
Zone
Heart Rate
1 50–60%
2 60–70%
3 70–80%
4 80–90%
5 90–100%

Setting Your Power Zones

The power zones use default values based on gender,
weight, and average ability, and may not match your
personal abilities. If you know your functional threshold
power (FTP) or threshold power (TP) value, you can
enter it and allow the software to calculate your power
zones automatically. You can manually adjust your
zones on the watch or using your Garmin Connect
account.
1 Hold UP.
2 Select User Profile > Heart Rate & Power Zones >
Power.
3 Select an activity.
4 Select Based On.
5 Select an option:
• Select Watts to view and edit the zones in watts.
• Select %FTP or % TP to view and edit the zones
as a percentage of your threshold power.
User Profile
35).
(Lactate Threshold, page
Perceived Exertion
Relaxed, easy pace, rhythmic breathing
Comfortable pace, slightly deeper breathing,
conversation possible
Moderate pace, more difficult to hold
conversation
Fast pace and a bit uncomfortable,
breathing forceful
Sprinting pace, unsustainable for long
period of time, labored breathing
• Select %HRR to view and edit the zones as a
percentage of your heart rate reserve (maximum
heart rate minus resting heart rate).
• Select %LTHR to view and edit the zones as a
percentage of your lactate threshold heart rate.
8 Select a zone, and enter a value for each zone.
9 Select Add Sport Heart Rate, and select a sport
profile to add separate heart rate zones (optional).
10 Repeat the steps to add sport heart rate zones
(optional).

Letting the Watch Set Your Heart Rate Zones

The default settings allow the watch to detect your
maximum heart rate and set your heart rate zones as a
percentage of your maximum heart rate.
y Verify that your user profile settings are accurate
(Setting Up Your User Profile, page
y Run often with the wrist or chest heart rate monitor.
y Try a few heart rate training plans, available from
your Garmin Connect account.
y View your heart rate trends and time in zones using
your Garmin Connect account.
Beginning-level aerobic training, reduces
stress
Basic cardiovascular training, good recovery
pace
Improved aerobic capacity, optimal
cardiovascular training
Improved anaerobic capacity and threshold,
improved speed
Anaerobic and muscular endurance,
increased power
6 Select FTP or Threshold Power, and enter your
value.
You can use the Auto Detection feature to
automatically record your threshold power during
an activity (Detecting Performance Measurements
Automatically, page 35).
7 Select a zone, and enter a value for each zone.
8 If necessary, select Minimum, and enter a minimum
power value.
Detecting Performance Measurements
Automatically
The Auto Detection feature is turned on by default. The
watch can automatically detect your maximum heart
rate and lactate threshold during an activity. When
paired with a compatible power meter, the watch can
automatically detect your functional threshold power
(FTP) during an activity.
NOTE: The watch detects a maximum heart rate only
34).
Benefits
35