YOU SAID:

the fitnessgram pacer test is a multistage aerobic capacity test that gets progressively more difficult as it continues

INTO JAPANESE

fitnessgram ペース メーカー テストがそれにつれて徐々 に困難を取得する多段有酸素能力テストです。

BACK INTO ENGLISH

It is a multistage aerobic oxygen test fitnessgram pace maker test as it gradually gets harder.