アイソメトリックス

noun

isometrics

Refers to isometric exercise, a type of strength training where the muscle length and joint angle do not change during contraction.

• アイソメトリックスは、関かん節せつを動うごかさずに筋きん肉にくを鍛きたえるトレーニング法ほうだ。

  Isometrics is a training method that strengthens muscles without moving the joints.