Nordic Curl
The king of hamstring exercises — proven to prevent hamstring injuries and build extreme eccentric strength
⚡ Quick Reference
| Aspect | Details |
|---|---|
| Pattern | Hinge |
| Primary Muscles | Hamstrings |
| Secondary Muscles | Glutes, Calves |
| Equipment | Bodyweight + Anchor |
| Difficulty | ⭐⭐⭐ Advanced |
| Priority | 🟠 Common |
Movement Summary
🎯 Setup
Starting Position
- Foot anchor: Secure feet under sturdy object, partner holding, or Nordic curl machine
- Knee position: Kneeling on pad or soft surface for comfort
- Body alignment: Hips fully extended, straight line from knees to head
- Arms: Crossed on chest or ready to catch your fall
- Core: Engaged to prevent hip flexion
Equipment Setup
| Equipment | Option | Notes |
|---|---|---|
| Partner | Partner holds ankles | Most common in team sports |
| Bench/Equipment | Hook feet under stable bench | Home gym option |
| Nordic curl machine | Purpose-built equipment | Gold standard |
| Door anchor | Strap around ankles, door anchor | DIY option |
Whatever anchor you use must be completely secure. Test it before attempting the exercise - you'll be putting significant force on it.
🔄 Execution
The Movement
- 🎯 Starting Position
- ⬇️ Eccentric (Lowering) Phase
- ✋ Catch Point
- ⬆️ Concentric (Returning) Phase
What's happening: Establishing tall kneeling position
- Feet secured behind you
- Kneeling upright
- Hips fully extended - critical
- Body straight from knees to head
- Prepare to fall forward slowly
Breathing: Deep breath, brace core
Feel: Tense, ready to control fall
What's happening: Fighting gravity with hamstrings
- Slowly lean forward - keep body straight
- Hamstrings work to slow descent
- Keep hips extended - don't break at hips
- Control as long as possible
- Eventually will need to catch yourself
Tempo: As slow as possible (3-10+ seconds)
Feel: Intense hamstring burn, fighting to control
Critical: This is the main exercise - the eccentric phase builds strength
What's happening: When hamstrings can't hold anymore
- Catch yourself with hands
- Land softly, don't crash
- Hands chest-width apart
- Absorb impact with arms
- Prepare to push back up
Note: How far you can control before catching = your current strength level
What's happening: Getting back to start (assisted)
- Push with arms to help yourself up
- Hamstrings pull as much as possible
- Most people need significant arm assist at first
- Goal is eventually no-hand return
- Return to tall kneeling position
Tempo: 1-2 seconds with assistance
Feel: Hamstrings pulling hard but likely need arm help
Key Cues
- "Stay tall - don't break at the hips" — prevents cheating
- "Control the fall as long as possible" — maximizes eccentric work
- "It's okay to use your hands" — most people need to at first
Tempo Guide
| Training Focus | Eccentric | Catch | Push-Up |
|---|---|---|---|
| Strength | Max time (5-10s+) | Gentle | Assisted |
| Eccentric-only | Max control | Gentle | Skip - reset to top |
| Full ROM goal | Control to floor | None | Hamstrings only |
💪 Muscles Worked
Activation Overview
Primary Movers
| Muscle | Action | Activation |
|---|---|---|
| Hamstrings | Knee flexion - eccentric control | ██████████ 95% |
Secondary Muscles
| Muscle | Action | Activation |
|---|---|---|
| Glutes | Maintain hip extension | ██████░░░░ 55% |
| Calves (Gastrocnemius) | Assist knee flexion | █████░░░░░ 50% |
Stabilizers
| Muscle | Role |
|---|---|
| Core | Prevent hip flexion, maintain rigid body |
| Erector Spinae | Maintain neutral spine |
Nordic curls provide up to 95% hamstring activation with extreme eccentric (lengthening) focus - this builds strength and dramatically reduces hamstring injury risk.
⚠️ Common Mistakes
| Mistake | What Happens | Why It's Bad | Fix |
|---|---|---|---|
| Breaking at hips | Hips flex, becomes easier | Defeats the purpose | Squeeze glutes, stay tall |
| Dropping too fast | No eccentric control | Misses main benefit | Go slower, use assistance |
| Trying full ROM too soon | Crash to ground | Injury risk, discouraging | Use assistance, build gradually |
| Not using assistance when needed | Form breakdown | Less effective, risky | Band or partner assist is smart |
| Knees hurt | Hard surface or hyperextension | Knee pain | Use thick pad, don't hyperextend at top |
Not using assistance: Most people can't do a full Nordic curl at first. Using a band or pushing with hands is EXPECTED and SMART - it's not cheating, it's progressive overload.
Self-Check Checklist
- Hips stay extended (not breaking/flexing)
- Body moves as one straight line
- Controlling eccentric as long as possible
- Using assistance on concentric as needed
- Knees comfortable on pad
🔀 Variations
By Assistance Level
- Band-Assisted
- Partner-Assisted
- Eccentric-Only
- Full (Unassisted)
| Feature | Description |
|---|---|
| Setup | Resistance band looped overhead, under arms |
| Benefit | Adjustable assistance throughout ROM |
| Best for | Beginners, building strength |
| Feature | Description |
|---|---|
| Setup | Partner provides upward force on back |
| Benefit | Variable assistance, team environment |
| Best for | Sports teams, training partners |
| Feature | Description |
|---|---|
| Setup | Control down only, walk hands back to top |
| Benefit | Focus on eccentric strength |
| Best for | Building toward full Nordic |
| Feature | Description |
|---|---|
| Setup | No assistance, hamstrings do all work |
| Difficulty | Very advanced |
| Goal | Elite hamstring strength |
Training Variations
| Variation | Modification | Purpose |
|---|---|---|
| Tempo Nordic | Super slow eccentric (10s+) | Maximum eccentric strength |
| Paused Nordic | Pause at multiple points on way down | Isometric strength throughout ROM |
| Single-Leg Nordic | One leg at a time | Extreme difficulty, imbalance correction |
📊 Programming
Rep Ranges by Goal
| Goal | Sets | Reps | Rest | Assistance |
|---|---|---|---|---|
| Injury Prevention | 2-3 | 6-8 | 2-3 min | As needed |
| Strength | 3-4 | 3-6 | 2-3 min | Minimal |
| Hypertrophy | 2-4 | 6-10 | 90s-2min | As needed for reps |
Workout Placement
| Program Type | Placement | Rationale |
|---|---|---|
| Leg day | End, after main lifts | Don't fatigue hamstrings early |
| Injury prevention | 2x per week | Research-proven frequency |
| Athletes | After practice, separate session | When fresh for quality reps |
Progression Scheme
Frequency Guidelines
| Purpose | Frequency | Volume |
|---|---|---|
| Injury prevention | 2x per week | 2-3 sets of 6-8 |
| Strength building | 2x per week | 3-4 sets of 4-6 |
| In-season athletes | 1-2x per week | 2 sets of 6 |
Studies show 2x per week Nordic curls reduce hamstring injury rates by up to 51% in athletes. Don't skip these!
🔄 Alternatives & Progressions
Exercise Progression Path
Regressions (Easier)
| Exercise | When to Use | Link |
|---|---|---|
| Slider Leg Curl (Double) | Build base hamstring strength | ✓ |
| Swiss Ball Leg Curl | Eccentric emphasis, easier | ✓ |
| Nordic Curl (Eccentric Only) | Focus on lowering only | ✓ |
| Nordic Curl (Band Assisted) | Reduce difficulty | ✓ |
Progressions (Harder)
| Exercise | When Ready |
|---|---|
| Nordic Curl - No assistance | Can control to horizontal |
| Nordic Curl - Weighted vest | Master unassisted version |
| Single-Leg Nordic | Elite hamstring strength |
Alternatives (Different Equipment)
- Machine Options
- Other Bodyweight
| Alternative | Benefit |
|---|---|
| Lying Leg Curl | Easier to load, less intimidating |
| Seated Leg Curl | Different strength curve |
| Glute-Ham Raise | Similar but different emphasis |
| Alternative | Benefit |
|---|---|
| Slider Leg Curl | Home-friendly |
| Swiss Ball Leg Curl | Accessible, effective |
🛡️ Safety & Contraindications
Who Should Be Careful
| Condition | Risk | Modification |
|---|---|---|
| Hamstring injury (recovering) | Re-injury if too soon | Wait until cleared, start very assisted |
| Knee pain | Kneeling position discomfort | Extra thick pad, check ROM |
| Beginner | Extreme DOMS if done too much | Start with 1 set, progress slowly |
- Sharp hamstring pain (not burn, but pain)
- Knee pain during movement
- Cramping in hamstrings that won't release
Injury Prevention Use
| Application | Protocol |
|---|---|
| Hamstring injury prevention | 2x per week, 2-3 sets of 6-8 reps |
| In-season athletes | 1-2x per week maintenance |
| Rehabilitation (with clearance) | Start assisted, gradual progression |
DOMS Warning
Nordic curls cause severe DOMS (delayed onset muscle soreness), especially first time. Start with just 1-2 sets and expect 3-5 days of hamstring soreness. This is normal.
🦴 Joints Involved
| Joint | Action | ROM Required | Stress Level |
|---|---|---|---|
| Knee | Flexion/Extension | Full ROM | 🟡 Moderate |
| Hip | Isometric extension | Maintained extension | 🟢 Low |
| Ankle | Plantarflexion | Pointed toes | 🟢 Low |
Mobility Requirements
| Joint | Requirement | Notes |
|---|---|---|
| Knee | Full flexion to extension | Standard ROM |
| Hip | Ability to extend fully | Kneeling requires this |
| Hamstring flexibility | Moderate | Ironically, tight hamstrings make this harder |
❓ Common Questions
I can't do a single Nordic curl - is that normal?
Completely normal! Very few people can do a full Nordic curl without training for it first. Start with band assistance or eccentric-only versions and progress over weeks/months.
How sore will I be after my first time?
Very sore. Nordic curls cause intense DOMS, especially the first 2-3 sessions. Expect significant hamstring soreness for 3-5 days. Start with just 1-2 sets to minimize this.
Can Nordic curls really prevent hamstring injuries?
Yes! Research shows Nordic curls 2x per week reduce hamstring injury rates by 51% in athletes. They're one of the most evidence-based injury prevention exercises.
Should I do these before or after my workout?
After main lifts. Nordic curls heavily fatigue hamstrings, so doing them before squats or deadlifts would compromise those lifts.
How do I progress from assisted to full Nordic curls?
Gradually reduce assistance over weeks. Use lighter band, less partner help, or extend how far you can control before catching yourself. It takes months - be patient.
📚 Sources
Injury Prevention Research:
- van der Horst, N. et al. (2015). Nordic Hamstring Injury Prevention - Tier A
- Mjølsnes, R. et al. (2004). Nordic Eccentric Training - Tier A
Biomechanics:
- NSCA Essentials of Strength Training - Tier A
- Bourne, M.N. et al. (2017). Nordic Hamstring Exercise Analysis - Tier A
Programming:
- Research-based hamstring injury prevention protocols - Tier A
- Sports medicine guidelines - Tier B
When to recommend this exercise:
- Athletes in hamstring injury-prone sports (soccer, sprinting, football)
- Anyone with history of hamstring injuries
- Advanced lifters wanting elite hamstring strength
- User specifically asks about hamstring injury prevention
- Rehab progression (with medical clearance)
Who should NOT do this exercise:
- Acute hamstring injury → Wait until fully healed and cleared
- Complete beginner → Build base with Leg Curls first
- Knee issues preventing kneeling → Try Slider Leg Curl
Key coaching cues to emphasize:
- "It's okay - almost everyone needs assistance at first"
- "Keep your body straight - don't break at the hips"
- "Control the fall as slowly as you can"
Common issues to watch for in user feedback:
- "I can't do even one!" → Normal. Start with band assist or eccentric-only
- "My hamstrings are so sore!" → Expected. Start with 1-2 sets, warn about DOMS
- "My hips keep bending" → Cue glute squeeze, may need to regress difficulty
- "My knees hurt" → Check pad thickness, may need different foot anchor
Programming guidance:
- Pair with: Quad-dominant exercises (squats) - provides balance
- Avoid same day as: Heavy deadlifts before Nordics (save hamstrings)
- Typical frequency: 2x per week for injury prevention, proven in research
- Critical: Start with LOW volume (1-2 sets) to avoid extreme DOMS
Progression signals:
- Ready to reduce assistance when: Can control descent for 5+ seconds
- Ready for full ROM when: Can lower to near-horizontal with control
- Expect progression timeline: 8-16 weeks from beginner to minimal assistance
Last updated: December 2024