Edit historic Training Impulse records that skew Fitness & Freshness

The relative effort and training impulse of the activity is calculated immediately when the activity is uploaded to the Strava servers. For the fitness and freshness graph I can’t give you the exact parameters but in my experience it seems to be recalcuated every time I look it up.

You don’t really have to correct historic relative efforts because after many months these won’t have an effect anymore on the current values. But if you want to make comparisons than your approach with the perceived extertion is the easiest one and you could do that even for the oldest of activities.

Thanks,

It’s the Power that screws it up. Setting the Fitness & Freshness graph to only use Relative Effort improves it.

Looking back at the activities that really screw it up, they are rides with crazy estimated power (670W avg for 90 mins!!). I now need to work out how to correct obviously incorrect estimated power readings.

Estimated power can’t be the problem because Strava uses measured power only for training load and  subsequently the power in the fitness graph. If you want to correct the estimated power anyway you have to input the correct weight of your bike and yourselve, the correct bike type and then correct the elevation of the activity if available. If not available then changing the activity type back and forth recalculates the estimated power.

Sorry, I disagree. The only time that I record real, measured, power data is recorded is on indoor rides using a smart turbo with bult-in power. My Fitness & Freshness graph is completely skewed by two outdoor rides which have crazy estimated powers. It appears that Strava, very occasionally, estimates a power and this screws up the F & F graph.

However, your tip of changing the activity type to clear this works - so thanks for that. This is a useful tip to overcome a glitch.

Thanks

When there is a spike on a day without power measured activities then this comes from the Relative Effort of the activities, meaning the heart rate or the perceived extertion when set and enabled to use instead of the heart rate. You can easily see that by changing the fitness graph to power only, there will be no training impulse for that day.