legsbeginnerReviewed by Dr. Ananya Iyer, DPT

Lying Hamstring Leg Curl

Direct knee-flexion exercise isolating biceps femoris and semitendinosus.

Recommended Sets3–4 Sets
Rep Range10–12 Reps
Rest Period60s Rest
Equipmentmachine

3D Visual Form & Technique Demonstration

Biomechanically verified form execution and joint angle cues.

Official Video Tutorial · 3D Biomechanics & Form DemonstrationWatch on YouTube
How to Execute the Lying Hamstring Leg Curl

Lie face down on machine with leg pad resting against lower calves. Grasp handles and plant hips firmly down into bench pad.

  • Primary Muscle: LEGS
  • Secondary Synergists: Pure Isolation
  • Rest Interval: 60 seconds between sets

Lying Hamstring Leg Curl Anatomy Activation

Primary motor unit recruitment for legs with secondary synergist stabilizers.

Primary (legs)
Anterior (Front View)
Anterior Muscle Recruitment: legsFront anatomical silhouette highlighting legs in orange as active agonist.
● Primary Target View
Posterior (Back View)
Posterior Muscle Recruitment: legsBack anatomical silhouette highlighting legs in orange as active agonist.
Secondary / Stabilizer View
Anatomical PlaneSagittal Plane
Primary KinesiologyKnee Extension & Hip Flexion
Biomechanical VectorSuperior vertical drive through patellar tendon
Active Anatomy:Primary: legs
Figure: Biomechanical muscle recruitment model for legs. Highlighted in orange is the primary agonist motor unit; highlighted in blue are synergistic stabilizing groups (isolation mechanics).

Step-by-Step Execution Guide

1

Lie face down on machine with leg pad resting against lower calves.

2

Grasp handles and plant hips firmly down into bench pad.

3

Curl heels up towards glutes as far as possible.

4

Pause at top contraction, lower weight slowly back down.

Common Mistakes & Form Fixes

Allowing hips to rise up off the pad during curl.

Letting weights drop without eccentric control.

Biomechanical Safety & Injury Warning

Keep hips glued to pad to prevent lower back compensation.

Alternative Exercises & Swaps

If the equipment is occupied or you need a joint-friendly variation, substitute with these approved movements:

Rohan Varma, CSCS
Authored By
Rohan Varma, CSCSHead Strength Coach & Biomechanics Lead
Dr. Ananya Iyer, DPT
Medically Reviewed By
Dr. Ananya Iyer, DPTChief Medical & Biomechanics Reviewer
Last Reviewed & Verified: 2026-03-29
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