Just to expand on that a bit more, if you don't mind

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Macho Brace reduce's speed by about 2/3rds I believe. Also by doubling EV's if you battle a Lotad while your pokemon is wearing the macho brace, it will gain 2 Sp. Def EV's rather than the 1 it normally has.
If another pokemon (for example Minun - because it was first one that came to mind) is wearing the exp. share, it will also gain 2 Sp. Def EV's much like it gains EXP without doing anything.
Just to expand on what Fiery Blaziken put.