"It's not enough to just sit up straight if your core muscles are weak," said Dr. Praveen Mummaneni.
普拉文·莫曼奈尼博士说：“如果你的核心肌群比较虚弱，那么仅仅坐直是不够的。”
保持收紧你的核心肌肉。
This workout can help improve the strength of the core muscles.
这个运动可以增强你核心肌肉的力量。
The body's core muscles are the foundation for all other movement.
身体的核心肌肉是各种动作的基础。
Engage your core muscles, then curl your upper body towards a sitting position.
调动人体核心部位的肌肉力量向上抬体，成坐姿。
Maintain the natural curve in your lower back, and keep your core muscles tight.
保持腰背部的自然弯曲，保持收紧你的核心肌肉。
Sitting on the unstable surface will activate your core muscles all day long.
坐在不稳定的球表面能够整天刺激你的核心肌肉。
You'll improve your balance and tone your core muscles while sitting at your desk.
这有助于提高你的平衡能力并增强你的核心肌肉。
To exercise the core muscles while toning the back muscles and the shoulder muscles.
锻炼腹部(核心区)肌肉和肩部肌肉。
As you stand, maintain the natural curve in your lower back and keep your core muscles tight.
在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。
5swiss ball sit-up This is more challenging than a normal sit-up because the instability of the ball forces the core muscles to work harder.
5健身球仰卧起坐该动作比普通的仰卧起坐更具挑战性。因为健身球自身所具备的不稳定性迫使肌肉工作的压力加大。
As you stand, maintain the natural curve in your lower back and keep your core muscles tight. Use your leg muscles - not your back - to lift the object.
在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。用你的腿部肌肉——不是背部——去抬起物品。
With one knee resting on the floor, tighten your core muscles - including the muscles in your abdomen, back and pelvis - and lift the object between your legs.
单膝着地，收紧你的核心肌肉——包括腹部、背部和骨盆的肌肉，然后在两腿之间抬起物品。
"It's not enough to just sit up straight if your core muscles are weak," said Dr. Praveen Mummaneni, a spine surgeon at the University of California, San Francisco.
旧金山加州大学外科医生莫曼奈尼博士说：“如果你的核心肌群比较虚弱，那么仅仅坐直是不够的。”
Why? Because muscles that are included in the group of core muscles are actually the ones that initiate the proper stabilization of the whole upper and lower torso.
为什么？因为包括核心肌肉群在一起的肌肉实际上就是启动整个身躯上下拥有良好稳定性的重要部分。
A new report from Harvard Medical School disclosed that traditional sit-ups only target certain muscle groups instead of strengthening the entire set of core muscles.
哈佛医学院的一项最新报道表明，传统仰卧起坐只能锻炼到特定的肌肉群，并不能起到强化全身核心肌肉的作用。
A new report from Harvard Medical School disclosed that traditional sit-ups only target certain muscle groups instead of strengthening the entire set of core muscles.
哈佛医学院的一项最新报道表明，传统仰卧起坐只能锻炼到特定的肌肉群，并不能起到强化全身核心肌肉的作用。
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