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Video sequences show three possible slip outcomes: (a) a participant experienced a fall, the same participant recovered successfully in the subsequent slip trials, (b) with a skate-over strategy, and (c) with a walkover strategy (25). Three frames in a1–a3, b1–b3, and c1–c3 show the instants of foot touchdown that triggered the onset of the slip, postslip liftoff, and touchdown of trailing limb. The triangle on each frame marks the location of the heel at the onset of the slip.
