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Garmin Forerunner 745 Manual

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during the activity. As the activity progresses, the Training Effect
value increases. Training Effect is determined by your user
profile information and training history, and heart rate, duration,
and intensity of your activity. There are seven different Training
Effect labels to describe the primary benefit of your activity.
Each label is color coded and corresponds to your training load
focus (Training Load Focus, page 19). Each feedback phrase,
for example, "Highly Impacting VO2 Max." has a corresponding
description in your Garmin Connect activity details.
Aerobic Training Effect uses your heart rate to measure how the
accumulated intensity of an exercise affects your aerobic fitness
and indicates if the workout had a maintaining or improving
effect on your fitness level. Your excess post-exercise oxygen
consumption (EPOC) accumulated during exercise is mapped to
a range of values that account for your fitness level and training
habits. Steady workouts at moderate effort or workouts involving
longer intervals (>180 sec) have a positive impact on your
aerobic metabolism and result in an improved aerobic Training
Effect.
Anaerobic Training Effect uses heart rate and speed (or power)
to determine how a workout affects your ability to perform at
very high intensity. You receive a value based on the anaerobic
contribution to EPOC and the type of activity. Repeated high-
intensity intervals of 10 to 120 seconds have a highly beneficial
impact on your anaerobic capability and result in an improved
anaerobic Training Effect.
You can add Aerobic Training Effect and Anaerobic Training
Effect as data fields to one of your training screens to monitor
your numbers throughout the activity.
Training Effect Aerobic Benefit Anaerobic Benefit
From 0.0 to 0.9 No benefit. No benefit.
From 1.0 to 1.9 Minor benefit. Minor benefit.
From 2.0 to 2.9 Maintains your aerobic
fitness.
Maintains your anaerobic
fitness.
From 3.0 to 3.9 Impacts your aerobic
fitness.
Impacts your anaerobic
fitness.
From 4.0 to 4.9 Highly impacts your
aerobic fitness.
Highly impacts your
anaerobic fitness.
5.0 Overreaching and
potentially harmful without
enough recovery time.
Overreaching and
potentially harmful without
enough recovery time.
Training Effect technology is provided and supported by
Firstbeat Technologies Ltd. For more information, go to
www.firstbeat.com.
Performance Condition
As you complete your activity, such as running or cycling, the
performance condition feature analyzes your pace, heart rate,
and heart rate variability to make a real-time assessment of your
ability to perform compared to your average fitness level. It is
approximately your real-time percentage deviation from your
baseline VO2 max. estimate.
Performance condition values range from -20 to +20. After the
first 6 to 20 minutes of your activity, the device displays your
performance condition score. For example, a score of +5 means
that you are rested, fresh, and capable of a good run or ride.
You can add performance condition as a data field to one of
your training screens to monitor your ability throughout the
activity. Performance condition can also be an indicator of
fatigue level, especially at the end of a long training run or ride.
NOTE: The device requires a few runs or rides with a heart rate
monitor to get an accurate VO2 max. estimate and learn about
your running or riding ability (About VO2 Max. Estimates,
page 16).
Viewing Your Performance Condition
This feature requires wrist-based heart rate or a compatible
chest heart rate monitor.
1
Add Performance Condition to a data screen (Customizing
the Data Screens, page 31).
2
Go for a run or ride.
After 6 to 20 minutes, your performance condition appears.
3
Scroll to the data screen to view your performance condition
throughout the run or ride.
Lactate Threshold
Lactate threshold is the exercise intensity at which lactate (lactic
acid) starts to accumulate in the bloodstream. In running, it is
the estimated level of effort or pace. When a runner exceeds the
threshold, fatigue starts to increase at an accelerating rate. For
experienced runners, the threshold occurs at approximately 90%
of their maximum heart rate and between 10k and half-marathon
race pace. For average runners, the lactate threshold often
occurs well below 90% of maximum heart rate. Knowing your
lactate threshold can help you determine how hard to train or
when to push yourself during a race.
If you already know your lactate threshold heart rate value, you
can enter it in your user profile settings (Setting Your Heart Rate
Zones, page 9).
Performing a Guided Test to Determine Your Lactate
Threshold
This feature requires a Garmin chest heart rate monitor. Before
you can perform the guided test, you must put on a heart rate
monitor and pair it with your device (Pairing Your Wireless
Sensors, page 29).
The device uses your user profile information from the initial
setup and your VO2 max. estimate to estimate your lactate
threshold. The device will automatically detect your lactate
threshold during runs at a steady, high intensity with heart rate.
TIP: The device requires a few runs with a chest heart rate
monitor to get an accurate maximum heart rate value and VO2
max. estimate. If you are having trouble getting a lactate
threshold estimate, try manually lowering your maximum heart
rate value.
1
From the watch face, select START.
2
Select an outdoor running activity.
GPS is required to complete the test.
3
Hold .
4
Select Training > Lactate Threshold Guided Test.
5
Start the timer, and follow the on-screen instructions.
After you begin your run, the device displays each step
duration, the target, and current heart rate data. A message
appears when the test is complete.
6
After you complete the guided test, stop the timer and save
the activity.
If this is your first lactate threshold estimate, the device
prompts you to update your heart rate zones based on your
lactate threshold heart rate. For each additional lactate
threshold estimate, the device prompts you to accept or
decline the estimate.
Getting Your FTP Estimate
Before you can get your functional threshold power (FTP)
estimate, you must pair a chest heart rate monitor and power
meter with your device (Pairing Your Wireless Sensors,
page 29), and you must get your VO2 max. estimate (Getting
Your VO2 Max. Estimate for Cycling, page 16).
The device uses your user profile information from the initial
setup and your VO2 max. estimate to estimate your FTP. The
device will automatically detect your FTP during rides at a
steady, high intensity with heart rate and power.
1
Select UP or DOWN to view the performance widget.
2
Select START to scroll through the performance
measurements.
Heart Rate Features 17
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