Abdominal -- Machine
Purposes
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Abdomial strength
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Oblique strength
Description
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Adjust the seat so that the axis of rotation of the machine is about navel height.
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Hips and knee joints should be bent, and the back straight.
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Position the lever arm of the machine at brestbone height.
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Actively tense the abdominals and pull the chin toward the chest.
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Roll the upper body vertebra forward.
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Guide back the trunk against the pressure of the lever arm.
ProTip
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Support the movement as little as possible with the shoulders or arms.
Mistakes
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Inititiating the movement by bending the hip joint, instead of rolling with the trunk.
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Bring the breastbone and pelvis toward each other.