You are asked to devise a test that discriminates between ru

You are asked to devise a test that discriminates between running and walking for different individuals and establishes the marginal speed at which the transition occurs. You should not consider attaching any sensors or devices to the body of the subjects. Assume that you have any equipment you need and good facilities (sufficiently large area, any number of force plates, cameras, treadmills, etc.):

Solution

solution

Heel contact

Midstance (flat foot)

Propulsion (toe off)

Short period of double support (10%)

60% of cycle without support (= airborne phase)

Walking	Slow running	Fast running
Contact phase (60%) Heel contact Midstance (flat foot) Propulsion (toe off)	Shorter contact phase (50%)	Short contact phase (40%)
5 cm base of gait (intermalleolar distance)	>5 cm base of gait
Short swing phase (40%)	Longer swing phase (70%)	Long swing phase (80%)
Short period of double support (10%)	40% of cycle without support (= airborne phase)	60% of cycle without support (= airborne phase)