インナーマッスル

noun

inner muscles; deep muscles

Anatomy and fitness term for muscles located deep inside the body, such as the transversus abdominis or multifidus, often contrasted with superficial muscles.

• インナーマッスルを鍛きたえると姿し勢せいが良よくなる。

  Training your inner muscles improves your posture.

• ピラティスはインナーマッスルに効きくと言いわれている。

  Pilates is said to work the deep muscles.