The Nordic hamstring curl, an exercise involving controlled lowering of the body from a kneeling position with the ankles anchored, has one of the more genuinely well-documented injury prevention evidence bases among specific exercises, particularly for hamstring strain prevention in sports involving sprinting and rapid deceleration.
The Exercise and Its Specific Eccentric Emphasis
The Nordic hamstring curl involves kneeling with ankles secured (by a partner, anchor, or specialized equipment), then slowly lowering the torso forward as far as controllable using primarily hamstring muscle control to resist the fall, rather than a partner-assisted return to the raised position — this heavily eccentric-emphasized movement (discussed in more mechanistic depth in our eccentric training guide) is specifically designed to load the hamstrings in the lengthened position where many hamstring strain injuries actually occur during sprinting.
Why This Specific Exercise Has Notable Injury Prevention Research
Multiple studies and meta-analyses examining hamstring injury prevention programs incorporating Nordic hamstring curls have found meaningful reductions in hamstring strain injury rates, particularly in sports involving high-speed running like soccer and various field sports — this specific exercise has one of the more robust injury-prevention research bases among exercises discussed on this site, giving it particular credibility beyond general strength training recommendations.
The Mechanism: Eccentric Strength at Long Muscle Lengths
Hamstring strain injuries commonly occur during the eccentric (lengthening) phase of sprinting, when the hamstring is actively controlling deceleration while in a lengthened position — the Nordic curl specifically trains eccentric hamstring strength in this same lengthened-position context, providing a more sport-specific and injury-mechanism-matched training stimulus than many conventional hamstring exercises that don't emphasize this same eccentric, lengthened-position loading pattern.
Progression for Beginners
The full Nordic hamstring curl is genuinely demanding, and beginners commonly need to progress gradually — starting with a smaller range of motion, using resistance band or partner assistance to reduce the effective load, and gradually increasing range of motion and reducing assistance as hamstring eccentric strength develops over successive weeks of training.
Delayed-Onset Muscle Soreness Considerations
Given its significant eccentric loading emphasis, the Nordic curl commonly produces notable delayed-onset muscle soreness, particularly for those new to the exercise, similar to the general eccentric training soreness pattern discussed in our eccentric training guide — anticipating and planning training schedule around this soreness, particularly when first introducing the exercise, is a reasonable practical consideration.
Who Benefits Most From Incorporating Nordic Curls
Athletes in sports involving repeated sprinting and rapid deceleration — soccer, rugby, sprinting-based track events, and similar sports — represent the population with both the clearest injury risk this exercise specifically addresses and the strongest supporting research for its preventive benefit in exactly these sport contexts.
Equipment and Setup Options
The exercise can be performed with a training partner holding the ankles, a specialized Nordic curl bench or attachment designed for solo use, or anchored under a heavy piece of stationary equipment — the specific setup matters less than ensuring secure, stable ankle anchoring throughout the controlled lowering movement, regardless of which specific method provides that anchoring.
Programming Frequency and Volume
Research-informed injury prevention programs incorporating Nordic curls typically use a modest but consistent weekly frequency over a sustained period, reflecting both the significant demand this exercise places on the hamstrings and the finding that consistent, ongoing inclusion, rather than occasional or short-term use, is associated with the meaningful injury reduction seen in the supporting research.
The Bottom Line
The Nordic hamstring curl has genuinely robust research support for reducing hamstring strain injury risk, particularly in sprint-heavy sports, working through its specific emphasis on eccentric hamstring strength at the lengthened muscle position where injuries commonly occur — beginners should progress gradually given the exercise's significant demand and the notable soreness it typically produces initially.
