斜方肌下束怎么了

Trapezius — Lower

Lower trapezius

中背部常见

这块肌肉是什么

从下胸椎延伸至肩胛冈，负责肩胛骨下压和上旋，维持肩胛骨正常位置，久坐者常因抑制而薄弱。

为什么会不舒服

久坐被长期抑制；缺乏专门训练；圆肩头前伸姿势的常见弱链。

常见不适表现

中背部弥散性酸痛；肩关节过顶动作时疼痛（肩峰撞击）；肩膀总是不自觉向上耸起。

缓解方法

Y字练习：俯卧，手臂举到头顶Y字方向，缓慢上抬夹肩胛；高位下拉；改善坐姿避免耸肩。

在三维人体上查看斜方肌下束

相邻的肌肉

Lower trapezius

Mid-back · Common

What this muscle is

Runs from the lower thoracic spine to the spine of the scapula. It pulls the shoulder blade down and helps it rotate upward, and it holds the blade in its normal place. In people who sit a lot it is often weak because it stays switched off.

Why it gets uncomfortable

Switched off by long sitting; no training aimed at it; a common weak link when the shoulders round and the head sits forward.

How it usually feels

A diffuse ache in the mid-back; pain when the arm goes overhead (pinching under the acromion); shoulders that keep creeping up on their own.

What helps

Y raise: lie face down, arms overhead in a Y, and slowly lift them while drawing the shoulder blades together. Lat pulldowns. Sit without shrugging.

本内容为运动健康科普，仅供参考，不构成医疗建议；不适持续或加重请及时就医。 General movement and health information, not medical advice. See a doctor if it continues or gets worse.