 According to the dynamic walking model, mechanical work in the step-to-step transitions increases proportional to step length and can be described by formula_6, where formula_7 is mechanical work rate and formula_8 is step length, which equates to a proportional increase in net metabolic rate.This relationship is due to reduced vertical force contribution for redirecting the COM at the wider step angles associated with longer step lengths.Larger step lengths also require additional hip torque during the swing phase to travel a wider angle, which contributes to the rate of metabolic cost by a factor of leg length squared

Increase in cadence yields more instances of leg swings and step-to-step transitions within a unit of time, leading to an increase in the rate of energetic cost.