First day on the stair descents. I'll try to keep a log of how things go.
This morning I did a set of 10 on each leg without problem. I was fine walking around work and commuting. This evening I did the same and felt minor discomfort in the quad tendon. For the last few on each leg I was able to take a bit of my weight by holding above the step and this removed the ill feeling. Notably the left calf was tight too and this felt to be blocking a slow steady eccentric descent. I followed with 10 mini lunges per leg and 10 small squats; these were fine.