Physioball Jackknife | Dryland Workout | Technique Explained
For many swimmers, simply attaining the starting position for this exercise will be a challenge. The initial emphasis should be on holding the body in a straight line from the feet to the tip of the head for a 60-second duration.
Developing the strength to hold this position will greatly enhance your ability to hold a tight streamlined position in the water. Incorporating the trunk-curling motion with hip flexion shifts the focus of this exercise from a general stabilising exercise to one that targets the abdomen and the hip flexors, which enhances the hip-rolling movements that take place in breaststroke and butterfly.
VARIATION The addition of the twisting motion shift the focus from the abdomen to the internal and external obliques. This alteration broadens the benefits of the exercise, making it useful to freestyle and backstroke swimmers.
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