目标肌肉:
! A ~, b$ L/ C9 p 腹肌
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5 _# z5 {- d/ c1 q 屈膝，肩部离开地面，一手放在一个膝诱W
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动作:
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呼气∶收紧腹肌，同时伸直一条腿，两手放在屈曲腿的膝诱W
# U" ]" n: f/ W, B* j吸气∶转腿
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呼气∶伸直另一条腿，两手放在另一屈曲腿的膝诱W
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训练目标:
9 \1 a8 C5 p. E8 _# O! Uwww.xmjeep.com 强化腹肌和躯干的稳定性
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Remarks:
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Special Thanks to Stephanie Tsui for demonstration
