Nordic Hamstring Curl

The Nordic hamstring curl is an advanced bodyweight exercise that isolates the hamstrings through a slow, controlled eccentric lowering phase. With the ankles anchored and the body kneeling upright, the hamstrings work to resist gravity as the torso falls forward, producing very high eccentric loads without any external weight. It is widely used in sprint and field-sport training because eccentric hamstring strength is strongly linked to reduced hamstring strain injury rates.

Muscles Targeted

• Primary: Biceps femoris, semitendinosus, semimembranosus (hamstrings)
• Secondary: Gluteus maximus, gastrocnemius
• Tertiary: Core stabilizers (to maintain a rigid torso line)

Starting Position

Kneel on a padded surface with a partner firmly pinning your ankles to the floor, or hook your ankles under a fixed anchor such as a lat pulldown pad or heavy dumbbell. Keep your hips fully extended so your body forms a straight line from knees to head, arms held loosely in front of your chest ready to catch yourself.

Execution Steps

1. Brace your hamstrings and glutes to keep your hips extended before you start lowering
2. Lean forward slowly from the knees, keeping your torso and thighs in one rigid line
3. Resist the fall with your hamstrings for as long as possible, lowering as slowly as control allows
4. Catch yourself with your hands on the floor once your hamstrings can no longer control the descent
5. Push back to the starting position using your hands to assist, or pull yourself back with the hamstrings if strength allows
6. Reset your hip position at the top before beginning the next rep

Form Cues

• Keep hips extended throughout: Piking at the hips reduces hamstring loading and turns the movement into a fall
• Lower as slowly as possible: The eccentric strength benefit comes from resisting the descent, not from the number of reps
• Keep your ankles firmly anchored: Any slack lets the ankles lift and reduces control of the movement
• Engage your glutes to help maintain hip extension as you lower
• Use your hands only to catch and push back up, not to support weight throughout the descent

Common Mistakes

• Bending at the hips instead of staying rigid: This shifts work away from the hamstrings and makes the exercise easier than intended. Keep a straight line from knee to head.
• Dropping too quickly: Falling fast provides little eccentric training stimulus and increases strain risk. Fight the descent as long as possible.
• Skipping a proper progression: Attempting full-range reps without eccentric hamstring conditioning is a common cause of soreness or strain. Build up with partial-range or band-assisted reps first.
• Unstable ankle anchoring: A partner who doesn't hold firmly, or a pad that slips, changes the exercise mechanics and is a safety risk. Confirm the anchor is completely secure before starting.
• Doing high volume too soon: Nordic curls cause significant delayed-onset muscle soreness. Start with very low reps and progress gradually.

Variations

• Resistance band-assisted Nordic curl: A band anchored in front reduces the load and assists the return, suitable for beginners
• Partial-range Nordic curl: Limits the range of motion to build eccentric strength before attempting full reps
• Slider Nordic curl: Uses sliding discs under the knees for a self-limiting, lower-risk regression
• Machine Nordic curl: Uses a dedicated Nordic curl machine or GHD to control ankle anchoring and range of motion
• Single-leg Nordic curl: An advanced unilateral variation for addressing side-to-side strength imbalances

Tips for Progression

• Start with resistance band-assisted or partial-range reps and only move to full-range, unassisted Nordic curls once you can control the descent through most of the range
• Increase the eccentric duration gradually, aiming to extend the controlled lowering phase by a second or two every few weeks
• Reduce reliance on your hands to catch yourself, lowering further under hamstring control before touching the floor
• Add reps or sets slowly (no more than 1-2 extra reps per week) given how much soreness this movement produces
• Progress to the single-leg Nordic curl once bilateral strength and control are solid, to address side-to-side imbalances

Training Notes

Include Nordic hamstring curls once or twice per week, never on consecutive days, due to the significant muscle soreness they produce. Beginners should start with 1-2 sets of 3-5 controlled reps, using hand support liberally, and progress volume slowly over several weeks. This exercise is best placed early in a session when the hamstrings are fresh, and is commonly paired with sprint, jump, or lower-body strength training as an injury-prevention staple.