Knee Flexion · Seated or lying leg curl machine
Leg Curl
Primary muscles: Hamstrings
Exercise data by RepDB (repdb.co)
Setup
- Adjust the machine so the knee aligns with the machine pivot as closely as practical.
- Secure the thigh/hip pads as designed.
- Set the ankle pad comfortably above the heel.
How To Perform It
- Curl the pad by bending the knees.
- Squeeze the hamstrings briefly.
- Return slowly without letting the stack slam.
Key ASF Cue
“Keep the hips still and curl through the knee.”
Common Mistakes
- Hips lifting or shifting.
- Using momentum.
- Cutting the return short.
Alternatives / Substitutions
Safety Note
Machine setup matters; stop if the knee position feels forced or painful.