Mastering the Jackknife: A Guide to the Ultimate Martial Arts Kick

chiewyc02
May 19
3 min read

Updated: Jun 24

Understanding the Jackknife Kick

The jackknife is an exciting martial arts kick that combines two powerful kicks in mid-air. It features a roundhouse kick and a spinning hook kick, making it one of the more challenging tricks to master. Like any kicking trick that involves multiple kicks, the jackknife requires practice and precision. In this article, we’ll break down the jackknife using the cheat step as a set-up to simplify the process.

The Take Off

Creating momentum towards the front side (the direction of travel) and generating rotation is crucial for the cheat step. In the example above, multiple steps are used in one direction while spinning before jumping. The jackknife demands strength and speed, so using a proper set-up is essential.

Cheat Step (Set Up)

Wind Up: Start by winding your body in the opposite direction of travel and rotation. This action helps you use your body like a slingshot, pulling back before launching forward.
Unwind: Unwind your body by externally rotating your left hip and rotating your torso in the same direction. This generates the necessary rotational force.
Extend Arms: Keep your arms extended while rotating. This can help increase the rotational forces acting on your body. Internally rotate your right hip as you prepare to jump.
Swing Out: As your right leg contacts the ground for the last time, swing your left leg outward in the rotational direction. Your arms should also swing in the same direction, ready to assist in the jump.
Jump: Once you’re facing your target (like the camera in the photo), swing your left leg and arms upward by flexing your hip and shoulders. This generates upward force, making it easier to jump off the ground.

The jackknife visually showcases a roundhouse kick and a spinning hook kick in mid-air. However, it’s important to remember that these kicks may not be performed exactly as they appear. Instead, think of the roundhouse kick as a "front-raising kick" and the spinning hook as a "back thrust." The key is to isolate these movements to the kicking leg while maintaining control over the rest of your body.

The Kick

Flexing Joints: As your body spins toward the target side (the camera side in the photo), flex your right hip and knee to about 90 degrees. This prepares you for the first kick and lowers inertia on your leg for better control.
Perform the Front-Raising Kick: With your hip and knee flexed, extend your knee to showcase the "flick" of the roundhouse kick. Externally rotate your left hip by pointing your left knee toward the direction of travel. Remember, your body is still spinning, so the front-raising kick will visually transform into a roundhouse kick.
Half Twist: After the roundhouse, perform a half twist before executing the spinning hook. The extension of your right hip will support this twist, allowing your body to spin in the air.
Spinning Hook: As your body faces away from the target, perform the spinning hook or back thrust. This involves extending your left hip and flexing your right hip simultaneously, moving your left foot back and up while bringing your right foot forward.
Control the Left Leg: Before extending your left hip, bend your left knee to gain control. When performing the spinning hook, extend your left hip and knee to make the kick explosive and aesthetic.
Landing: Focus on landing in a single-leg deadlift position. Land on your right leg first, using the ball of your foot for a soft landing.

Strength and Conditioning

To master the jackknife, you’ll need to build strength and stability. Here are some exercises to help you:

1. Hip Airplanes

Hip airplanes are fantastic for hip stability and strength, especially in a single-leg stance. Start by holding onto a stable structure. Progress to balancing on one leg, and finally, challenge yourself by holding a kettlebell or dumbbell.

2. Single leg Hops

Single leg hops build explosiveness in your one-leg jumping ability. This exercise trains your strength to absorb forces and redirect them for another jump. It also helps protect your joints from the high forces experienced during a jackknife landing.

3. Core Exercises

Core exercises that involve leg movements in the air, like flutter kicks or window wipers, are excellent for training your body to control leg movements. Leg raises are also beneficial. Additionally, exercises like the Copenhagen side plank strengthen the lateral abdominal muscles and the inner hip muscles, crucial for explosive movements.

Conclusion

Mastering the jackknife is no small feat, but with practice and the right techniques, you can achieve it! Remember to focus on your set-up, control your movements, and build strength through conditioning exercises. The journey may be challenging, but the thrill of executing a perfect jackknife is worth every effort. So, are you ready to take your kicking skills to the next level? Let’s get started!

For more training options, check out our Kicks of Fury sessions and elevate your skills even further!