CREATE TABLE table_3728 ("#" FLOAT, "Matches As Captain" TEXT, "Player" TEXT, "Asian Cup Played As A Captain" TEXT, "Years Active" TEXT, "Caps ( Goals ) " TEXT)

What were the years active where Asian Cup played as a captain is Iran 1976?
SELECT "Years Active" FROM table_3728 WHERE "Asian Cup Played As A Captain" = 'Iran 1976'
SELECT "Years Active" FROM "table_3728" WHERE "Asian Cup Played As A Captain" = 'Iran 1976'