During forward walking the moment arm of plantar flexion
increased as walking continued, but during backward walking
it decreased. In other words, it became increasingly
more difficult to exert power to generate propulsion. These
were the factors behind the decrease in power.
This study elucidated kinetic differences. These differences
suggest that even when the movement patterns are
the same, they play different roles in forward and backward
walking. Through the evaluation of ankle power, we can
elucidate the contribution to the propulsive force generated
by the ankle joint motion, and it is a very important index
for understanding the factors of propulsive force in motion.
I would like to investigate the source of the propulsive
force in backward walking in the future.