Stair climbing International tournament in Milad Tower

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Infants typically learned to descend stairs after they have already learned to ascend, with only about 12% achieved both stair-climbing skills at the same time.On average in this study, infants learned to crawl and cruise before learning to ascend stairs independently. Infants were able to climb up the stairs before they could walk, but walking tended to come before independent stair descent.

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