SUUNTO t4 - Manual (Page 23)

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2.5.1. Training Effect
A unique feature of Suunto t4 is its ability to record and display Training Effect. Training Effect
(TE) shows the effect of a workout on your aerobic fitness on a simple one-to-five scale. For the
first time, you will know in real time how much your workout is really improving your fitness level.
With Training Effect, you can ensure that your workouts always give the intended result.
Please note the difference between training zone (temporary training intensity) and Training Effect
(total load of a workout). In zone training, you try to keep your heart rate at a certain level
throughout the whole workout, whereas for Training Effect it is enough just to reach the desired
TE value once during the workout.
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