Hi Halvard!

We are a team that try to push the limit on how much training we can do. Or say it another way: Find the optimal individually workload who gives maximum result for the athlete. We therefore pay a lot of attention to intensitycontrol. And to control our training we of course use heartrate monitors. That is a basic tool. We also use Powermeters for cycling, but also for running ( Stryd). That we also use in all races so we have a lot of good data with heartrate, powerdata in both cycling and running.
We also use a system called Tritonwear for swimming and we use it to analysze stroke efffiency in the water and getting data like DPS, frequence.
We have started digging into powermeters for swimming, but right now we think that the available systems arent good enough.

To really now how we shoud train and what is the right intensity we do lab testing at least 5 times a year. And we then test in all diciplines. One test takes around 2h ang gives us a lot of data that we use in training. And to really now what is right intensity we do a lot of lactatetesting. Both in the lab bust mostly out in the field during training. I think that we do around 100tests with each athlete at an altitudecamp like that we had in march-april.
You dont do intervals at 3 i lactat mmol/l when your indivdual lactatethreshold is 2,3 mmmol/l. That is far more important than what you pace is and what power is during training. So when training at your right lactace threshold ( measured individually for you in the lab) you get the best Results.
And With a lot of testing we learn the athletes to know what their limits are and how they should train With the right intensity.