What is this all about?

If you are one of these athletes who are constantly struggling with injuries and just can't find a solution then this website may be helpful for you.
You can use our service to monitor your training load, avoid over- or undertraining and thus keep your injury risk low.
We use the acute:chronic workload ratio in our calculations. You can find more about this calculation here: http://bjsm.bmj.com/content/50/4/231

Acute to chronic workload ratio to quantify injury risk from SpartaNova on Vimeo.


One of the creators of this website is a software developer and passionate runner who struggled with Shin Splints for several years.
After countless hours of research and trying out everything possible to get rid of the problem the frustration increased until recently he stumbled across the concept of acute:chronic training load monitoring.
He decided to give it a try and since he structures his training according to these principles he is finally able to run pain-free.

Upcoming features

  • Undertraining and overtraining warning levels can be configured
  • Coaches can manage teams of athletes and monitor their training load


Acute load (AL)The training load of the current week. This represents your fatigue.
Chronic load (CL)The average training load of the last few weeks. This represents your fitness.
Acute:Chronic workload ratio (ACWR)  This is the acute load divided by the chronic load. The result should be a value between 0.8 and 1.2 to keep the injury risk low.


This is just a simple and free online tool to monitor training load. We have no medical background in any form. We just wanted to offer a free tool for all athletes who are interested in this kind of training load monitoring.


Wanna drop us a line? Just send an email to
Acute:Chronic workload monitoring