PullBalanced over midfoot, bar 4.3 cm ahead
Side view
Drag to orbit, pinch or scroll to zoom

Upright row

35 kg bar, grip about 30 cm. The bar travels up the front of the body to lower-chest height with the elbows leading high and wide.

3°Ankle dorsiflexion
2°Knee flexion
4°Hip flexion
3°Trunk from vertical
12°Arm to trunk
29°Elbow flexion
28Ankle spacing, cm
30Hand spacing, cm
-3Knee outside ankle, cm
–Knee cave, ° inside toe line
50 / 50Load left / right, %
0Pelvis drop, cm

Load and joint demand

Load in the model: 35 kg. Balance and joint demand re-solve as you change it.

Lower back
34 / 54
Hip extensors
19 / 28
Knee flexors
26 / 31
Calves
41 / 41
Shoulder, per side
12 / 25
Elbow, per side
20 / 58

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

Shoulders
100 pts
Upper back
82 pts
Biceps
64 pts

Effort and your quota

3.5/10 effort3.7fatigue per set

Your quota per set: 10 reps at 35 kg, stopping 2 reps short of failure.

One hard set earns 100 push points, 120 pull points, 64 arms points.

Prime movers

Lateral deltoid, upper trapezius, biceps.

What to look for

  • Stop around lower-chest height; higher pinches the shoulder for many people.
  • Elbows stay above the hands.
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.