"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。”
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。
Recent research in patients with low back pain has led to discoveries of impairments in core muscles, which have a functional role in enhancing spinal segmental stability and control.
目前有关腰痛患者的研究发现其负责维持脊柱节段性稳定和控制的核心肌群功能受限。
The main responsibility of the core muscles is to provide enough power to the body in order to enable it to cope up with the dynamic challenges of every physical activity that a person encounters.
核心肌肉的主要责任是提供足够的核心能量，以便使它能应付人们遇到得每一种体育运动的动态挑战。
He said Jackson used exercise balls and did training to strengthen his core body muscles.
他说，杰克逊训练时用到了训练球，而且做了许多训练来锻炼他核心部位的肌肉。
While using various muscles in the upper and lower body at the same time, functional fitness exercises also emphasize core stability.
训练不仅同时调动上体和下肢的多块肌肉，同时也注重肢体的稳定性。
That's when your core body temperature is higher and muscles perform better when core temperature is higher.
这个时候你的体温会高一些，而肌肉往往在体温较高时表现更佳。
The program targets muscles in the upper body, lower body and core, improves aerobic endurance, and can be completed in less time than most of us spend dithering about how to get to the gym.
这个锻炼计划针对的是上下身的肌肉和核心肌群，有助于改善有氧耐力，所用时间比我们大部分人为了怎么去健身房而纠结的时间还要短。
As many of the muscles that generate movement originate in the core area, good conditioning can help an athlete produce speed and cope with race-day fatigue.
因为许多肌肉产生的动作发源于核心区域，良好的体能可以帮助运动员产生速度，克服比赛疲劳。
As many of the muscles that generate movement originate in the core area, good conditioning can help an athlete produce speed and cope with race-day fatigue.
因为许多肌肉产生的动作发源于核心区域，良好的体能可以帮助运动员产生速度，克服比赛疲劳。
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