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Side view
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L-sit

Locked-out support on parallel bars; straight legs rise from hanging to horizontal and are held there.

-30°Ankle dorsiflexion
4°Knee flexion
2°Hip flexion
3°Trunk from vertical
10°Arm to trunk
11°Elbow flexion
17Ankle spacing, cm
50Hand spacing, cm
0Knee outside ankle, cm
–Knee cave, ° inside toe line
–Load left / right, %
0Pelvis drop, cm

Load and joint demand

Bodyweight exercise: the load slider has no effect here; body mass comes from your limits.

Hip flexors
4 / 49
Shoulder, per side
22 / 22
Elbow, per side
16 / 16

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

Abs and core
60 pts
Triceps
38 pts
Upper back
28 pts

Effort and your quota

3/10 effort3fatigue per set

Your quota per set: hold 13 s, stopping 2 reps short of failure.

One hard set earns 38 push points, 28 pull points, 38 arms points, 60 core points.

Prime movers

Hip flexors, rectus abdominis, triceps, lower trapezius.

What to look for

  • Shoulders pushed down, arms locked.
  • Legs straight and together.
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.