Mixed

Performing past-failure partial repetitions in the lengthened position after reaching momentary failure during standing calf raises increases medial gastrocnemius hypertrophy compared to terminating sets at momentary failure in peak plantarflexion.

If you do calf raises, don't stop when you can no longer lift your heels all the way up. Once you fail a full repetition, immediately drop the heel as low as possible and do partial up-and-down movements until you can't lift your heels to that lowest point anymore. This adds significant volume and tension to the muscle, leading to more growth than stopping at the point of failure. Expect it to be uncomfortable, but for many, the extra growth is worth it.