Garmin training effect: what the two scores mean

Training Effect estimates how a session affected two types of fitness: aerobic (endurance work) and anaerobic (shorter, harder work). The two scores describe different kinds of training impact, rather than a simple rating of how hard the workout felt.

Two views of the session

Aerobic relates to endurance work; anaerobic relates to shorter, more intense work. Read the explanations and labels on your device alongside the scores. A session can have value without a high score in both.

What influences the result?

Garmin describes inputs including your profile, training history, heart rate, how long the session lasted and how hard it was. Check the recording before judging an unusual result.

Do not make a score the target

An easy session does not need to produce the same result as a hard one. Start with the job of the session in your week. A larger number is not automatically better.

A useful review

• What was the session meant to do?
• What did you actually record?
• How did it feel?
• What would you keep or change next time?

Sources and further reading

• Garmin: training effect

Keep reading

• Training load
• Garmin numbers explained

See how to review a session in the app