Intensity Trend is calculated by Load Impact minus Base Fitness. Load Impact (7 days) and Base Fitness (42 days) are variables, not constants. The two variables are calculated based on the Training Load from the last 7 days/42 days using an exponentially weighted model.
If the Intensity Trend is negative, it means you may not be recovering enough between workouts or the workouts need to be more challenging. If the Intensity Trend is positive, it means you are making progress and improving your fitness level over time. This is a good sign that your workouts are appropriately challenging, and you are allowing your body enough time to recover between sessions.
Users can interpret these two metrics as an average, for example, if the average load impact in the last 7 days is 10, and the average base fitness in the last 42 days is 20, then the Intensity Trend is -10.
If the Intensity Trend is negative, it means you may not be recovering enough between workouts or the workouts need to be more challenging. If the Intensity Trend is positive, it means you are making progress and improving your fitness level over time. This is a good sign that your workouts are appropriately challenging, and you are allowing your body enough time to recover between sessions.
Users can interpret these two metrics as an average, for example, if the average load impact in the last 7 days is 10, and the average base fitness in the last 42 days is 20, then the Intensity Trend is -10.