Teeter-totter effect: a new mechanism to understand shoe-related improvements in long-distance running.

摘要: The effect of shoe mid-sole construction on running performance was discussed with reference to the Nike Vaporfly 4%.1 Drs Burns and Tam described thickness as major characteristic that contributes changes in performance. Here, we highlight role curved carbon fibre plate embedded mid-sole, introduce a new mechanics, ‘ teeter-totter ’. During ground contact running, point application reaction force moves anteriorly during second half towards front end plate. We suggest that, this position, produces ‘reaction’ at heel upward direction (perpendicular plate; figure 1). Figure 1 Schematic illustration including (red full circle) its translation broken circle line), applied runner (black arrow) part foot early/mid-stance (left orientation) push-off (right orientation). Image modified from nike.com. If curvature is designed correctly, …