Lower, eccentric
Side view
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Dumbbell push-up

A push-up with the hands gripping dumbbell handles, so the wrists stay straight and the chest can sink a little below the hands. The body is a rigid plank pivoting about the balls of the feet.

10°Ankle dorsiflexion
2°Knee flexion
2°Hip flexion
67°Trunk from vertical
46°Arm to trunk
56°Elbow flexion
20Ankle 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.

No gravity-based joint demand to show for this exercise.

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

Chest
100 pts
Shoulders
82 pts
Triceps
64 pts
Abs and core
23 pts
Glutes
23 pts

Effort and your quota

4.5/10 effort4.5fatigue per set

Your quota per set: 13 reps at bodyweight, stopping 2 reps short of failure.

One hard set earns 23 legs points, 246 push points, 64 arms points, 23 core points.

Prime movers

Pectoralis major, anterior deltoid, triceps; abdominals and glutes hold the plank.

What to look for

  • Keep ankles, hips and shoulders in one straight line.
  • Grip the handles and keep the wrists straight.
  • Elbows angle back, not straight out to the sides.
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.