Seated leg curl
Knee aligned with pivot, thigh pad locked, toes relaxed.
family=leg curlpattern=knee flexionforce=pullmechanic=isolationequipment=machine
Muscles
- Primary
- hamstrings
- Supporting
- None listed
Mechanics
- Pattern
- knee flexion
- Equipment
- machine
- Geometry
- Variable Range
- Target feel
- Hamstrings pull the pad down without hips lifting.
- Progression
- Add slow eccentric before adding stack weight.
- Regression
- Reduce range if cramping or hip lift appears.
Common errors
- Seat set too far
- Rushing the eccentric
- UNKNOWN — no additional common error is recorded in the biomechanics dataset.
Programming by goal
| Goal | Sets × reps | Effort cap | Tempo |
|---|---|---|---|
| Strength | 3 × 3-6 | RPE ≤ 9 | 2-0-X-0 |
| Muscle growth | 3 × 8-12 | RPE ≤ 8 | 3-1-1-0 |
| Endurance | 3 × 15-25 | RPE ≤ 7 | 2-0-2-0 |
Engine defaults for one exercise. Adjust load so every rep stays within the listed effort cap.
Equipment context
The machine fixes the movement path, reducing stabilizer demand and letting you focus on the target muscle.
Substitutions
- Lying leg curl
- Slider leg curl
- Nordic curl
Related exercises
Progression ladder
- Beginner / regression: Reduce range if cramping or hip lift appears.
- Standard: Seated leg curl
- Advanced / progression: Add slow eccentric before adding stack weight.
Atlas metrics
- Movement pattern
- knee flexion
- Primary target
- hamstrings
- Supporting muscles
- None listed
- Equipment
- machine
- Joint geometry
- Variable Range
- Alternatives
- 3 substitutions
Evidence & limits
Last reviewed against peer-reviewed biomechanics references. Exercise descriptions are framed as training guidance, not medical advice.
Source: ExRx.net Exercise & Muscle Directory
Eccentryx is fitness software. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease, injury, or medical condition. Consult a licensed physician before beginning any exercise program.
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FAQ
- How do I set up Seated leg curl?
- Knee aligned with pivot, thigh pad locked, toes relaxed.
- What should I feel during Seated leg curl?
- Hamstrings pull the pad down without hips lifting.
- What are common mistakes with Seated leg curl?
- Seat set too far; Rushing the eccentric
- How do I progress Seated leg curl?
- Add slow eccentric before adding stack weight.
- What can I do instead of Seated leg curl?
- Lying leg curl, Slider leg curl, Nordic curl


Seated leg curl: isolation pattern, 2000 ms rep trace, engine-derived.