Do Nordic curls actually prevent hamstring injuries?

What makes the Nordic specific is what it loads: the hamstring lengthening under tension. That is the position the muscle is strained in — late in the swing phase of a sprint, long and braking — and it is not trained by a seated leg curl.

Adherence is the real problem. The exercise is unpleasant, produces reliable soreness, and is the first thing cut when a session runs long. Most of the gap between the research and the field is a compliance gap rather than an efficacy one.

Regressions count. Athletes who cannot yet control a full Nordic can use band-assisted or partial-range versions and still load the right thing. All-or-nothing is how it ends up being nothing.

Train Smart keeps eccentric hamstring work in the week year-round rather than cutting it when in-season volume drops, and places it relative to game day so the soreness does not land on a match.