Nordic hamstring curl for injury prevention
A bodyweight eccentric exercise that dramatically cuts hamstring strain risk.
Why it works
The Nordic curl forces the hamstrings to decelerate the tibia as the body falls forward — a pure eccentric load at long muscle lengths. This shifts the angle of peak torque to a longer muscle length, which is mechanically protective because most hamstring strains occur during the late swing phase when the muscle is long and producing force. Nordics build eccentric strength and fascicle length precisely where strains happen.
How to do it
- Kneel on a padded surface with feet anchored (under a bar, by a partner, or in a Nordic bench).
- Cross arms at chest and lower your body toward the floor as slowly as possible — aim for 3–5 seconds.
- Use your hands to catch yourself at the bottom and push back to the start.
- Begin with 2–3 controlled reps per set, 2 sessions per week; add reps as strength builds over weeks.
Evidence
Multiple randomized trials and meta-analyses find the Nordic hamstring curl reduces hamstring strain rates in team-sport athletes by roughly 50 % when integrated into warm-up programs. The van der Horst cluster-RCT extended this protective effect to amateur soccer players, addressing the earlier gap where evidence sat mainly in elite squads. (rct)
Evidence is strongest in team sports (football, soccer); transfer to recreational athletes is plausible but less directly studied. Very sore initially — start with low volume.
Sources
- Petersen et al. (2011), "Preventive Effect of Eccentric Training on Acute Hamstring Injuries," American Journal of Sports Medicine
- Petersen J, Thorborg K, Nielsen MB, Budtz-Jørgensen E, Hölmich P (2011). "Preventive Effect of Eccentric Training on Acute Hamstring Injuries in Men's Soccer: A Cluster-Randomized Controlled Trial." American Journal of Sports Medicine, 39(11), 2296-2303.
- van der Horst N, Smits DW, Petersen J, Goedhart EA, Backx FJG (2015). "The Preventive Effect of the Nordic Hamstring Exercise on Hamstring Injuries in Amateur Soccer Players: A Randomized Controlled Trial." American Journal of Sports Medicine, 43(6), 1316-1323.
Common mistake
Lowering too fast (a controlled fall instead of a slow eccentric), which turns a training stimulus into a collision. The slow descent is the entire point.
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More practices for Eccentric Training, Made Practical
- Slow negatives (controlled lowering)
Extend the lowering phase of any lift to 3–5 seconds to amplify the growth stimulus.
- Eccentric loading for tendon rehabilitation
Controlled eccentric load is the primary evidence-based stimulus for repairing tendinopathy.
- Eccentric overload using bands or weight releasers
Load the lowering phase heavier than the lift to force genuine eccentric overload.
- Managing DOMS and the repeated-bout effect
The soreness from eccentric work fades fast, and the protection it builds is real.
- Isometric holds as a bridge into eccentric work
Isometric pauses in the lengthened position prepare tendons and muscles for heavier eccentric load.
- Eccentric training for muscle preservation in aging
Older adults can achieve substantial strength gains with lower cardiorespiratory cost using eccentric-focused training.