臀大肌怎么了
Gluteus Maximus
Gluteus maximus
这块肌肉是什么
人体最大单块肌肉，是髋关节伸展最强的动力来源，在行走跑跳中每步都发力，也是腰椎的重要稳定者。
为什么会不舒服
久坐使臀大肌被持续压迫、不易主动发力（俗称"臀肌失忆"）；代偿性腰痛常因臀肌无力导致竖脊肌过度工作。
常见不适表现
臀部深层酸胀（训练后）；久坐后站起来臀部有"发木感"；腰痛反复（常与臀肌功能下降相关）。
缓解方法
臀桥：仰卧屈膝脚踩地，臀部向上抬，顶部收紧保持2秒；坐位臀肌收缩练习（随时可做）；减少久坐。
相邻的肌肉
Gluteus maximus
Buttock · Common
What this muscle is
The largest single muscle in the body. The strongest driver of hip extension. It works on every step of walking, running, and jumping, and it is an important stabilizer of the lower back.
Why it gets uncomfortable
Sitting keeps it compressed and makes it hard to switch on (often called "glute amnesia"). Low-back pain that fills in for weak glutes often comes from the spinal erectors overworking.
How it usually feels
A deep sore ache in the buttock after training; a numb, wooden feeling in the buttock when you stand up after sitting; low-back pain that keeps coming back, often tied to glutes that are doing less.
What helps
Glute bridge: lie on your back, knees bent, feet on the floor, lift the hips, squeeze at the top, and hold 2 seconds. Squeeze the glutes while you sit; you can do that anytime. Sit less.
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.
模型：BodyParts3D，© The Database Center for Life Science，CC BY 4.0