Suunto T4D User Manual page 17

rate at a certain level throughout the whole workout. With Training Effect you just need
to reach the desired target once during training.
Training Effect Result
1.0-1.9 Minor
2.0-2.9 Maintaining
3.0-3.9 Improving
4.0-4.9 Highly
improving
5.0 Over-reaching
NOTE: It is important to note that the numerical TE values do not mean that a workout
with a lower numerical value is somehow worse or less significant than a workout with a
high value. Both are needed in balanced training.
16
Description
Improves recovery ability; in longer sessions (over
one hour) also improves basic endurance. Does not
significantly improve aerobic performance.
Maintains aerobic fitness. Builds base for harder
training in the future.
Improves aerobic performance if repeated 2-4 times
a week. No special recovery requirements.
Rapidly improves aerobic performance if repeated
1-2 times a week. Requires 2-3 recovery sessions
(TE 1-2) per week.
Extremely high effect on aerobic performance if
adequate recovery allowed; should not be done
often