RowBalanced over midfoot
Side view
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Gorilla row

Very wide stance and deep hinge over two 24 kg kettlebells; the right bell rows while the left one stays on the floor under the left hand.

-4°Ankle dorsiflexion
40°Knee flexion
100°Hip flexion
62°Trunk from vertical
61°Arm to trunk
2°Elbow flexion
72Ankle spacing, cm
40Hand spacing, cm
-9Knee outside ankle, cm
0°Knee cave, ° inside toe line
44 / 56Load left / right, %
0Pelvis drop, cm

Load and joint demand

Load in the model: 24 kg. Balance and joint demand re-solve as you change it.

Lower back
220 / 220
Hip extensors
136 / 136
Knee flexors
30 / 30
Calves
34 / 34
Shoulder, per side
0 / 61
Elbow, per side
1 / 40

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

Lats
100 pts
Upper back
82 pts
Biceps
46 pts
Hamstrings
17 pts

Effort and your quota

4.5/10 effort4.7fatigue per set

Your quota per set: 10 reps at 25 kg, stopping 2 reps short of failure.

One hard set earns 17 legs points, 210 pull points, 46 arms points.

Prime movers

Latissimus dorsi, rhomboids, posterior deltoid, biceps, hamstrings (holding).

What to look for

  • Push the floor bell down as the other one rows.
  • Stay low; the torso barely moves.
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.