My 4 x 8’ @ 105% ftp (quite all out I would say) was between 90% and 96% of max HR.
I guess that the HR % should be taken as a ballpark, since I was able to complete the workout
My 4 x 8’ @ 105% ftp (quite all out I would say) was between 90% and 96% of max HR.
I guess that the HR % should be taken as a ballpark, since I was able to complete the workout