By keeping the abdominal muscles relaxed, the pelvis can move freely.

如果能让小腹肌放松的话, 那麽骨盆就可以自由移动啦!

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Doing sit - ups is an effective way to exercise abdominal muscles.

仰卧起坐是锻炼腹部肌肉的有效办法.

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Bend your legs to relax your abdominal muscles.

弯一下腿,以放松腹部肌肉.

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Tighten abdominal muscles to stabilize low back.

收紧腹部肌肉稳住后腰.

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The the shoulders and sitting the ball works the lower back and abdominal muscles.

这组动作锻炼肩膀肌肉,坐在球上锻炼背部和腹部肌肉.

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The strain of his abdominal muscles and dorsal muscles was induced by exercising improperly.

他的腹背肌劳损是由于运动不当造成的.

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Strong abdominal muscles are essential to stabilizing your spine and reducing the potential for back injuries.

强腹部肌肉所必需的稳定你的脊椎,减少对背部受伤的潜力.

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