There have been numerous threads the past months regarding the stamina, and above all questions about what percentage that is needed to retain excellent stamina on your players. We can now publish a quite substantial study that has been done by Roquevarela with data added and adjusted by Zeverlap. Full credit to these two managers for making these numbers available to the general community!

The original study that was made by Roquevarela, and which is the main base for these findings and hence this post, can be found in thread 11112037.29. Furthermore, please note that formidable stamina has not been included in this post, mainly due to the findings on this level not being adequate to draw conclusions, especially since everything above excellent can be considered a bonus - and to some degree random.

8 = excellent, 7 = solid, 6 = passable, 5 = inadequate, 4 = weak

Also, as pointed out by Zeverlap, as the ages of players are given in years only, the same levels of stamina for different percentage of stamina training might exist. This is because the highest level of what players hold for that age is the number listed. This means that if a player goes down from solid to passable at the age of 31, the player would actually go down at the age of 30, as some players will drop at 30,15 (30 years and 15 days) while others might experience a drop at 30,80.

So where do I look and what is important with this table? As most managers know by now, having lower stamina in midfield, lower here referring to lower than solid - will cause a severe and very penalizing drop in performance. Of course, this is mainly important for your inner midfielders as they are the ones looking to boost midfield rating, if your midfielders get tired quick, your midfield rating is likely to drop as players cannot use their entire playmaking skill for 90 minutes - which might be the explanation of why your possession is different between the first- and second half.

Example: So if you wanted to boost training for your youths, while still retaining excellent stamina on your 27 year old inner midfielders, you’d look in the table for year 27, number 8 (as in excellent) and come to the conclusion that you’ll most likely need a stamina level above 20% (22% to be exact according to the table). Of course, if you were only looking to retain your midfielders at solid stamina, you’d see that you could lower your level of stamina training significantly.

Please note that as with all studies, these type of data is collected from the general community and with inputs from a lot of people - which might cause discrepencies. I’d still encourage managers to draw their own conclusions from their own studies. Having said this, I’m more than confident that this table can provide you with a solid base and future reference.

If you’ve made your own study and don’t agree at all with some of the numbers, please post a comment!