Lower, eccentric
Side view
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Close-grip bench press

Grip about 44 cm with elbows tucked close to the body. Bar touches slightly lower on the chest than a standard bench.

-15°Ankle dorsiflexion
79°Knee flexion
39°Hip flexion
87°Trunk from vertical
89°Arm to trunk
9°Elbow flexion
60Ankle spacing, cm
44Hand spacing, cm
6Knee outside ankle, cm
–Knee cave, ° inside toe line
–Load left / right, %
0Pelvis drop, cm

Load and joint demand

Load in the model: 70 kg. Balance and joint demand re-solve as you change it.

Shoulder, per side
11 / 58
Elbow, per side
8 / 84

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

Triceps
100 pts
Chest
82 pts
Shoulders
64 pts

Effort and your quota

4/10 effort4.2fatigue per set

Your quota per set: 10 reps at 70 kg, stopping 2 reps short of failure.

One hard set earns 246 push points, 100 arms points.

Prime movers

Triceps brachii, pectoralis major, anterior deltoid.

What to look for

  • Elbows stay close to the ribs; the top view shows the tuck.
  • Hands roughly shoulder-width, not touching.
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.