Settle this once and for all....

I agree. I don’t classify this eccentric/concentric rehab/prehab as specific work but rather supplementary seeing as it is fuck all as far as intensity goes. But for myself it is vital as far as maintaining range of motion, as when i lose the range of motion(sometimes lazy to do eccentric calves) and sprint, too much trauma is induced to the tendons.

the swedish study said to increase the eccentric calves reps and when that becomes easy then add a backpack with weight but i’m hesitant about this, since it might shift it from general supplementary to specific unnecessity. I’ve been getting along alright past 2 years using the following eccentric/concentric lower/raise scheme:
22 reps both legs w/very slight knee bend
22 reps both legs w/deeper knee bend (activate more soleus stretch)
11 reps singles each leg w/very slight knee bend
11 reps singles each leg w/deeper knee bend