3. Jackknife With Leg Lift
This exercise targets the rectus abdominis as well as the hip flexor muscles of the lifting leg. Begin in the same position described in the Basic Jackknife. Exhale and slowly round your lower back, pulling your torso forward into a curl position. Simultaneously, lift one leg and pull the knee up and toward the chest. Pause at one end of the curl movement, then inhale and slowly return the leg and torso to the starting position. Repeat the Jackknife, lifting the opposite leg. Alternate legs with each Jackknife. Perform
See FIG. 11 & 12.
FIG. 13
FIG. 14
FIG. 11
FIG. 12
4. Extended Arm Jackknife
This exercise targets the rectus abdominis, and is a little higher intensity than the Basic Jackknife. Begin in the same position described in the Basic Jackknife. Then, straighten both arms until the forearms are behind the Focus Strap™. Exhale and slowly round your lower back, pulling your torso forward into a curl position. As you pull forward, contract your abdominal muscles inward toward your spine and pull the bottom of your rib cage down toward the top of your hip bones. Pause at the end of the curl movement, then inhale and slowly return to the starting position. Perform
See FIG. 13 & 14.
5. Extended Leg Jackknife |
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This exercise targets the rectus abdominis and, |
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like the Extended Arm Jackknife, is a little higher |
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intensity than the Basic Jackknife. Begin in the |
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same position described in the Basic Jackknife. |
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Then, straighten both legs, resting the ankles or |
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calves on the foot rest. Exhale and slowly round | FIG. 15 | |
your lower back, pulling your torso forward into a | ||
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curl position. As you pull forward, contract your |
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abdominal muscles inward toward your spine |
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and pull the bottom of your rib cage down |
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toward the top of your hip bones. Pause at the |
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end of the curl movement, then inhale and slow- |
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ly return to the starting position. Perform five- |
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second repetitions as described in the Basic |
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Jackknife. Do not pull with the arms or lift the |
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legs as you Jackknife. See FIG. 15 & 16. | FIG. 16 |