Actually it's taekwondo.tbm. That mod adds power to some joints.
joint l_knee
flag 32
velocity 70
joint r_knee
flag 32
velocity 70
joint l_hip
flag 16
velocity 70
joint r_hip
flag 16
velocity 70
joint chest
velocity 70
body r_foot
force 0 10 00
body l_foot
force 0 10 00
gravity 0.00 0.00 -13