Training Stress Load (CTL/ATL/TSB)
Performance Manager Chart model — calculates fitness, fatigue, and form from your recent training sessions.
Inputs
Fill in the inputs and press Calculate to see your science-backed results.
How to use Training Stress Load (CTL/ATL/TSB)
Performance Manager Chart model — calculates fitness, fatigue, and form from your recent training sessions.
Choose measurements that describe your actual session or situation, confirm the units, then calculate. Read the result alongside its assumptions and use the tool again when your inputs change.
Inputs explained
Sessions this week
Enter a measured or estimated value (minimum 1) (maximum 14), using the unit indicated in the field label.
Avg session duration (min)
Enter a measured or estimated value (minimum 10) (maximum 240), using the unit indicated in the field label.
Avg session RPE (1-10)
Enter a measured or estimated value (minimum 1) (maximum 10), using the unit indicated in the field label.
Sport
Choose the option that matches your context; available options include Strength, Running, Cycling.
Goal
Choose the option that matches your context; available options include Fat Loss, General Fitness, Performance.
How to interpret the output
Record your recovery context consistently and compare trends with changes in training load, sleep and perceived fatigue.
Repeat measurements using similar conditions when monitoring trends. Numerical predictions can vary with input accuracy, measurement method and individual circumstances.
Limitations and responsible use
The PMC model uses simplified inputs here. For accurate CTL/ATL, log each session's TSS individually over weeks.
Read the full disclaimerFrequently asked questions
What does the Training Stress Load (CTL/ATL/TSB) estimate?
Performance Manager Chart model — calculates fitness, fatigue, and form from your recent training sessions.
Which information do I need for this recovery tool?
Provide Sessions this week, Avg session duration (min), Avg session RPE (1-10), Sport, Goal. Use your own relevant measurements and the units indicated in each field.
How should I interpret the result?
Record your recovery context consistently and compare trends with changes in training load, sleep and perceived fatigue. Compare results with your goals and other relevant observations rather than using a single output to make a major decision.
Disclaimer: The PMC model uses simplified inputs here. For accurate CTL/ATL, log each session's TSS individually over weeks. Read the medical disclaimer.
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