Hinge down
Side view
Drag to orbit, pinch or scroll to zoom

Cable pull-through

Facing away from a low pulley with a rope between the legs. A hip hinge to about 65°, hands tracking back between the knees. Cable force is not modelled, so no balance check.

3°Ankle dorsiflexion
10°Knee flexion
17°Hip flexion
3°Trunk from vertical
17°Arm to trunk
0°Elbow flexion
60Ankle spacing, cm
6Hand spacing, cm
-9Knee outside ankle, cm
–Knee cave, ° inside toe line
–Load left / right, %
0Pelvis drop, cm

Load and joint demand

Machine or cable load (30 kg at this setting) is not modelled, so joint demand shows the body only.

Shoulder, per side
56 / 138
Elbow, per side
27 / 67

N·m now / peak over the rep.

Faults

Faults grow with knee bend and apply to lifts standing on the floor. The fault check flags a knee caving more than 10° inside the line of the toes and a load split beyond 60/40. Knee cave shows best in the front camera.

Body

Femur changes keep standing height fixed by shortening or lengthening the torso. Longer femurs force more forward lean in any squat.

Muscles worked

Glutes
100 pts
Hamstrings
82 pts

Effort and your quota

4.5/10 effort4.7fatigue per set

Your quota per set: 10 reps at 30 kg, stopping 2 reps short of failure.

One hard set earns 182 legs points.

Prime movers

Gluteus maximus, hamstrings.

What to look for

  • Arms stay straight; they are just hooks.
  • Squeeze the glutes at the top instead of leaning back.
How the model works, and its limits

One 3D skeleton drives both views. Segment lengths and widths are Winter's anthropometric ratios of height; segment masses and centre-of-mass positions follow Dempster's data. For free-standing lifts the whole-body angle is found numerically so the combined centre of mass of lifter and load sits over the middle of the foot. Arms and legs use two-link inverse kinematics with a pole direction. Rep timing follows a minimum-jerk profile.

Balance is quasi-static, so ballistic lifts are shown slowed down. Cable pull and pad support forces are not modelled. The spine is one rigid segment and joints have no range-of-motion limits or muscle forces.