It can be readily understood that the fluid-filled bladders taught in the recited patents and patent applications, and the like, could be used in combination with a spring element 51, e.g., various alternate embodiments shown in FIGS. 73-82, 96-100, and 115-117. [0849] Alternately, a midsole 26 cushioning element can also be made of a foam rubber or plastic material such as polyurethane or ethylen