The session was horrible:
Had a) some lower back pain, induced by moving back to Germany on Wednesday and carrying all those heavy suitcases. Did b) the session on the way back home from a friend's birthday party, where I avoided drinking alcohol but ate a bit to much cake...
av. pace for the reps was 3:44, 3:50 and 3:48
Went to the doc for my lower back pain today and he diagnosed Spondylolistesis. I am still allowed to run, if pain allows.
This diagnosis is in fact kind of good news, because it probably explains the recurring hamstring problems I am having from time to time. I already found good treatment advice searching youtube for "spondilo drop" I am optimistic I will be able to cure it with this technique (easyly reproducable at home). I also will inrcease the amount of the core-strength work I am doing.
I will take the 5k paced run on Sunday or skip it completely, according to how my back feels.