Nordic Hamstring Curl
What Is the Nordic Hamstring Curl?
Nordic Hamstring Curl is a compound exercise that primarily targets the hamstrings through an intense eccentric contraction. The lifter kneels with their feet anchored and slowly lowers their torso toward the ground, resisting gravity using the hamstring muscles. This exercise has become one of the most extensively researched movements in sports science due to its proven effectiveness in reducing hamstring injury rates.
The Nordic curl places the hamstrings under extreme eccentric load at long muscle lengths, which is the specific contraction type and position where hamstring strains most commonly occur during sprinting and field sports. Research consistently demonstrates that athletes who regularly perform Nordic curls experience significantly fewer hamstring injuries. This has led to its adoption in warm-up protocols across professional soccer, rugby, and track and field programs.
Unlike machine-based hamstring exercises such as the Machine Lying Leg Curl or Machine Seated Leg Curl, the Nordic curl trains the hamstrings in a knee-dominant pattern with the hip held in a neutral or extended position. This preferentially targets the short head of the biceps femoris and develops eccentric strength that has direct transfer to athletic movements.
The exercise is highly demanding and most individuals will not be able to perform the full range of motion initially. Progressions include using hand assistance on the ground, limiting the range of motion, or using a resistance band for support. The Barbell Romanian Deadlift and Dumbbell Romanian Deadlift are complementary hip-dominant hamstring exercises that pair well with the knee-dominant Nordic curl.
Muscles Worked
- Biceps Femoris
- Primary
- Semimembranosus
- Primary
- Semitendinosus
- Primary
- Sartorius
- Minimal
Instructions
- Kneel on a pad or soft surface with your feet anchored securely under a fixed object, a partner, or a Nordic curl apparatus.
- Position your knees at hip width and keep your torso upright with arms at your sides or held in front of your chest.
- Brace your core and squeeze your glutes to maintain a straight line from your knees through your hips and shoulders.
- Begin lowering your body forward by extending at the knees while keeping your hips locked in position.
- Resist the forward fall as slowly and controlled as possible using your hamstrings.
- Continue lowering until you can no longer control the descent, then catch yourself gently with your hands.
- Push off the ground lightly with your hands to assist the return to the starting position, or use your hamstrings to pull yourself back up if you have sufficient strength.
- Reset to the upright kneeling position and ensure proper alignment before beginning the next repetition.
Common Mistakes
Bending at the hips
Hinging at the hips instead of maintaining a rigid torso shifts the load away from the hamstrings and turns the movement into a hip hinge.
Falling uncontrolled
Dropping to the ground without resisting the descent eliminates the eccentric stimulus that makes this exercise effective.
Excessive hand push-off
Using too much force from the hands during the concentric phase reduces hamstring engagement and limits strength development.
Insufficient ankle anchor
An insecure foot anchor allows the feet to shift during the movement, compromising control and increasing injury risk.
Progressing too quickly
Attempting full range of motion before building adequate eccentric strength significantly increases the likelihood of a hamstring strain.
Injuries
Nordic Hamstring Curl is a medium risk exercise when performed with proper technique. The extreme eccentric demand on the hamstrings requires adequate baseline strength, and the exercise should be progressed gradually to avoid muscle strains.
The primary injury concern is acute hamstring strain, particularly in individuals who attempt full-range repetitions without sufficient eccentric strength. Beginning with partial range of motion or band-assisted variations and progressively increasing the lowering distance over several weeks is the safest approach.
Knee discomfort is common due to the pressure of the kneeling position and the forces acting on the joint. Using a thick pad under the knees and ensuring the anchor point does not dig into the Achilles tendon can alleviate most discomfort. Individuals with patellofemoral pain should proceed cautiously.
Cramping in the hamstrings or calves may occur during initial exposure to the exercise. Adequate hydration, a thorough warm-up, and limiting volume in the early sessions can reduce this risk.
- Primary Focus
- Hamstrings
- Equipment
- Body weight and other
- Modality
- Strength
- Difficulty
- Advanced
Alternative Exercises
Frequently Asked Questions
- Q: How do I progress toward a full Nordic curl?
Start by controlling only the top portion of the descent and gradually increase the range of motion over several weeks. Band-assisted variations, where a resistance band supports your torso, allow you to practice the full range with reduced load.
- Q: How many reps and sets should I do?
Begin with two to three sets of three to five repetitions, focusing on a slow eccentric phase. As strength develops, volume can be increased to three to four sets of six to eight repetitions.
- Q: Can I do Nordic curls without a partner or machine?
Yes. You can anchor your feet under a loaded barbell, a heavy piece of furniture, or a dedicated Nordic curl strap attached to a door or rack. Ensure the anchor is completely stable before beginning.
- Q: How often should I train Nordic curls?
Two to three sessions per week is typical for injury prevention protocols. Allow at least 48 hours between sessions to recover from the eccentric loading.
- Q: Do Nordic curls replace leg curls?
They serve different but complementary roles. Nordic curls emphasize eccentric strength at the knee joint, while Machine Lying Leg Curl provides concentric and eccentric loading through a full range of motion. Using both is ideal for comprehensive hamstring development.