Human Biomechanics Lab

Interactive movement simulation & engineering analysis

Gait

Lifting

Sport

skeleton mode

Developed by Asrar ul Haq

Heel strikef 0/60

During heel strike, ground reaction is 0.24×BW (177 N) and the whole-body CoM sits 1.03 m above the floor.

Ground reaction force175 N0.2×BW

Peak GRF (cycle)1412 N1.92×BW

L5/S1 compression1150 N

Metabolic power750 W

Energy / cycle0.8 kJ

Cadence165 /min

CoM height103 cm

L5/S1 lumbar1145 N · 1.6×BW

Right knee705 N · 1.0×BW

Left knee377 N · 0.5×BW

Left hip286 N · 0.4×BW

Right hip286 N · 0.4×BW

Left ankle156 N · 0.2×BW

Biceps (R)30%

Quadriceps (L)30%

Quadriceps (R)30%

Gastrocnemius (L)25%

Gastrocnemius (R)25%

Hamstrings (L)24%

Hamstrings (R)24%

Erector spinae18%

Lumbar spine (L5/S1)Low

Compression 1145 N is within the NIOSH action limit.

Knee (patellofemoral / ACL)Low

Peak knee reaction 1.0×BW with deep flexion raises patellofemoral and ligament load.

Shoulder (rotator cuff)Low

Shoulder reaction 0.1×BW from arm elevation/grip load.

Achilles / ankleLow

Ankle/Achilles load tracks 0.2×BW ground reaction during push-off and landing.

Overall cycle risk: moderate · Movement symmetry: 100% · Activity: run

Model estimates for education — not lab-measured data. Developed by Asrar ul Haq