How many lbs does a set 4 of 115lb x 8reps have?
CREATE TABLE "periodization" (
  "week" real,
  "set_1" text,
  "set_2" text,
  "set_3" text,
  "set_4" text,
  "set_5" text,
  "volume_lbs" real,
  "peak_intensity_last_set" text,
  "pct_of_1_rep_max_last_set" text
);
SELECT "volume_lbs" FROM "periodization" WHERE "set_4"='115lb x 8reps';