The force-velocity relationship is central to many theories of training, as well as in various practical approaches. For instance, in Zatsiorsky’s “Science and Practice of Strength Training” (1) — which, in my opinion, is one of the few Eastern European manuals that’s actually comprehensible by us ‘westerns’ — there is a pretty figure (see below) which shows that various types of training have various effects on an athlete’s force-velocity curve.