1.
core, trunk (of the body)
The central part of the body excluding the head and limbs; in fitness, the deep muscles of the torso that support posture and movement.
体幹を鍛えるとバランスが良くなる。
Training your core improves balance.
体幹トレーニングは毎日続けることが大切だ。
It's important to do core training every day.
プロの選手は体幹がしっかりしているから、当たり負けしない。
Professional athletes have strong cores, so they don't get knocked off balance by contact.
USAGE:
体幹 has become a widely used fitness term in Japan. It refers to the trunk muscles (abdominals, back, pelvis, diaphragm) that stabilize the body. The term gained popularity through sports science and fitness media.
COMMON COLLOCATIONS:
- 体幹トレーニング (core training)
- 体幹を鍛える (to train/strengthen the core)
- 体幹が強い (to have a strong core)
- 体幹が弱い (to have a weak core)
RELATED TERMS:
- インナーマッスル (inner muscles — often used interchangeably in casual speech)
- 腹筋 (abdominal muscles — one component of the core)