Nordic Hamstring Curl Progressions: A Smarter Way to Build Eccentric Strength

Training
Nordic Hamstring Curl Progressions: A Smarter Way to Build Eccentric Strength
The nordic hamstring curl is one of the most effective exercises for building eccentric hamstring strength. It's also one of the most commonly butchered.
Why Most People Fail at Nordics
They attempt full range on week one. They use bands, hand catches, or push-assists. They train concentric before eccentric mastery. They don't use box targets to earn range under control.
The result: frustrated lifters who think they "can't do nordics" when they simply started at the wrong level.
The 7-Phase Benchmark System
Core philosophy: Earn the descent. Earn the return. Then combine both.
Phases 1–3 — Foundation, range, strength
High-box → medium-box → low-box eccentrics. Lower under control, contact the box, no hand assist on the way down.
Phase 4 — Eccentric ownership
3×6 @ 4s+ to floor. Concentric training stays locked until this benchmark passes.
Phase 5 — Eccentric overload
3×4 @ 2.5 kg max (core program cap). Eccentric only.
Phase 6 — Concentric ownership
3×6 clean concentric efforts — no push-off, full alignment.
Phase 7 — Full Nordic mastery (standard achievement)
3×6 perfect full nordics — 4s eccentric, 3s glute squeeze, clean return.
Tempered — the highest standard
3×10 perfect full nordics. Pursue after Phase 7 performance standard — not required to achieve the Gate standard.
You advance on benchmark — not calendar weeks.
A progression that adds load before the position is owned is building on something that is not there. Earth is loaded joint steeping — the position first, the load after.
How We Track It on the Platform
The scroll holds one state at a time — sealed, steeping, or tempered — measured by eccentric control time under load. You always know which stage you are in and what opens the next one.
Who This Is For
Athletes, sprinters, jumpers, footballers, and any lifter who wants real hamstring strength — not just leg curl numbers that don't transfer.
Take the program quiz if you're unsure whether this is your starting point.
Next: the five scrolls as five kata, in Musashi's order — 伝書 Denshō.
References
- [1]Petersen J, Thorborg K, Nielsen MB, et al. “Preventive effect of eccentric training on acute hamstring injuries in men's soccer: a cluster-randomized controlled trial.” American Journal of Sports Medicine, 2011
- [2]van der Horst N, Smits DW, Petersen J, et al. “The preventive effect of the Nordic hamstring exercise on hamstring injuries in amateur soccer players: a randomized controlled trial.” American Journal of Sports Medicine, 2015
- [3]Al Attar WSA, Soomro N, Sinclair PJ, et al. “Effect of injury prevention programs that include the Nordic hamstring exercise on hamstring injury rates in soccer players: a systematic review and meta-analysis.” Sports Medicine, 2017
- [4]Bourne MN, Duhig SJ, Timmins RG, et al. “Impact of the Nordic hamstring and hip extension exercises on hamstring architecture and morphology.” British Journal of Sports Medicine, 2017
Dark Kinetics
The five scrolls Musashi sealed at Reigandō in 1645, restored as a training doctrine and welded to cellular measurement.
Denshō
Earth, Water, Fire, Wind, Void — the doctrine this record sits inside. No consultation, no call to schedule.
OPEN THE DENSHŌ