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Burpee broad jump

A burpee with the chest to the floor, then a two-footed jump forward as far as possible. Shown on the spot: the jump leans forward with the arms swinging through, and lands back where it started.

4°Ankle dorsiflexion
2°Knee flexion
3°Hip flexion
4°Trunk from vertical
19°Arm to trunk
2°Elbow flexion
22Ankle spacing, cm
58Hand spacing, cm
-1Knee 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

Quads
100 pts
Glutes
82 pts
Chest
64 pts
Triceps
46 pts
Calves and shins
35 pts
Abs and core
35 pts

Effort and your quota

8/10 effort8fatigue per set

Your quota per set: 8 reps at bodyweight, stopping 2 reps short of failure.

One hard set earns 207 legs points, 110 push points, 46 arms points, 35 core points.

Prime movers

Quadriceps, gluteus maximus, pectoralis major, triceps, calves, abdominals.

What to look for

  • Chest to the floor, then jump the feet in close to the hands.
  • Swing the arms and jump forward, not up.
  • Land softly and go straight down into the next one.
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.