How long does it take to adjust steps after an unexpected perturbation during running?

Scohier, Mikaël;De Jaeger, Dominique;Schepens, Bénédicte
(2009) International Society for Posture and Gait Research (ISPGR) — Location: Bologna (Italia) (21.June.2009)

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The mechanism of running can be modelled as a simple spring-mass system bouncing on the ground, with a single spring representing the runner’s leg and a point mass equivalent to body mass. When the conditions of running are modified, for example by changing surface stiffness [1] or running barefoot compared to shod [2], it has been shown that runners adjusted their leg stiffness. We applied an unexpected dorsoflexion to the ankle just before the foot contact during running. We observed some immediate biomechanical adjustments, including a decreased leg stiffness and a decreased and delayed foot-slap (unpublished results). We are now interested in quantifying the long-lasting effect of the perturbation: Is the next step still affected by?
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Scohier, M., De Jaeger, D., & Schepens, B. (2009). How long does it take to adjust steps after an unexpected perturbation during running? International Society for Posture and Gait Research (ISPGR), Bologna (Italia). https://hdl.handle.net/2078.5/236159