CREATE TABLE table_67539 ("Week" FLOAT, "Set 1" TEXT, "Set 2" TEXT, "Set 3" TEXT, "Set 4" TEXT, "Set 5" TEXT, "Volume Lbs." FLOAT, "Peak Intensity ( Last Set ) " TEXT, "% of 1 Rep Max ( Last Set ) " TEXT)

How many % of 1 Rep Max(Last Set) has a Set 4 of 145lb x 5reps?
SELECT "% of 1 Rep Max(Last Set)" FROM table_67539 WHERE "Set 4" = '145lb x 5reps'
SELECT "% of 1 Rep Max(Last Set)" FROM "table_67539" WHERE "Set 4" = '145lb x 5reps'