Jackknife Sit-Up
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General info
How to perform exercise
- Lie flat on the floor (or exercise mat) on your back with your arms extended straight back behind your head and your legs extended also. This will be your starting position.
- As you exhale, bend at the waist while simultaneously raising your legs and arms to meet in a jackknife position. Tip: The legs should be extended and lifted at approximately a 35-45 degree angle from the floor and the arms should be extended and parallel to your legs. The upper torso should be off the floor.
- While inhaling, lower your arms and legs back to the starting position.
- Repeat for the recommended amount of repetitions.
Variation: If you are really advanced you could use a medicine ball for added resistance.
Photos of the correct technique
What muscles work?
If the correct technique is followed, the following muscle groups work: Abs, and auxiliary muscles:
Best workout routines with this exercise
These programs with this exercise «Jackknife Sit-Up» are among the best rated by athletes.
Fat Burning
Exercise substitutions
You can try replacing the exercise «Jackknife Sit-Up» with one of these exercises. The possibility of replacement is determined on the basis of the muscle groups involved.
Jackknife Sit-Up
Author: AtletIQ: on
Jackknife Sit-Up — The benefits of exercise, how to properly perform and how many sets to do..
Rating: 5
Workouts with «Jackknife Sit-Up»
