Butterfly Sit-Ups - What it Works
Focus: Abs
Type: Strength
Difficulty: level 4 of 5

仰卧,双脚脚掌相对,双膝向两侧打开,双臂在头顶上方伸展贴地。用一个流畅的动作完全坐起,向前伸手触碰双脚,然后有控制地一节一节脊椎缓缓向后滚落。蝴蝶腿的姿势使髋屈肌无法参与起身发力,这就是为什么它比普通卷腹(sit-up)更难——所有工作都由腹肌完成。 仰卧,双脚脚掌相对,双膝向两侧打开,双臂在头顶上方伸展贴地。用一个流畅的动作完全坐起,向前伸手触碰双脚,然后有控制地一节一节脊椎缓缓向后滚落。蝴蝶腿的姿势使髋屈肌无法参与起身发力,这就是为什么它比普通卷腹(sit-up)更难——所有工作都由腹肌完成。

训练动作:腹肌(abs)、腹斜肌(obliques)、髋内收肌(hip adductors)

呼吸(breathing):坐起前伸时呼气,向后躺回时吸气。

常见错误:甩动手臂借助惯性将身体拉起,而不是有控制地缓慢下放回平直状态,以及在动作中途让膝盖相互靠近漂浮。

降低难度:双臂交叉抱在胸前以缩短力臂(lever),或者借助……逐步进阶到完整动作。Sit-Ups or 卷腹(crunches).

增加难度:将每一次动作中的下放(roll-down)放慢至三拍,或继续进阶到仰卧起坐出拳(sit-up punches) or 肘击仰卧起坐(Elbow Strike Sit-Ups).

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