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Schematic diagram of typical trials in spasticity group (A) and non-spasticity group (B) during obstacle crossing. UL, unaffected limb; AL, affected limb; H-C, heel contact; T-O, toe-off; DST1, time between unaffected-limb heel contact and affected-limb toe-off during the pre-obstacle phase; DST2, time between affected-limb heel contact and unaffected-limb toe-off during middle crossing.
