Hanging Flutter Kick
What Is the Hanging Flutter Kick?
Hanging Flutter Kick is a compound exercise that primarily targets the core and also engages the hip flexors, the lats and the grip. It is an intermediate-level movement in which you hang from a pull-up bar with straight arms and raise one straight leg to about hip height while the other stays down, then switch legs in a steady scissoring rhythm.
It helps to be clear about who does what. Lifting a straight leg is hip flexion, so the hip flexors (the iliopsoas and the rectus femoris at the front of the thigh) do the lifting. The abdominals work mostly to hold the trunk and pelvis still: with nothing under the body, every kick pulls on the pelvis and tries to tip it forward and arch the lower back, and the abs and obliques have to stop that for the whole set. That is real core work, but it is not a lower-ab isolation exercise. The rectus abdominis works as one muscle, and the effort shifts toward the abs only when the pelvis is held slightly tucked rather than left to arch.
Compared with the Hanging Straight Leg Raise, where both legs rise together, only one leg is up at a time, so each rep is lighter and the work is continuous rather than heavy. Compared with floor Flutter Kicks, the hanging version takes away the floor that supports the lower back, adds grip and shoulder demand, and lets each leg travel through a much bigger range. That places it as a bridge between the Hanging Knee Raise and harder straight-leg work such as the Hanging Straight Leg Raise and the Hanging L-Sit, and it suits the end of a session as a core finisher.
It fits trainees who can already hang with active shoulders for 20 to 30 seconds and do strict hanging knee raises without swinging. If that is not there yet, build the hang with the Dead Hang, the hip flexor and trunk control with the Hanging Knee Raise and floor Flutter Kicks, and then come back to the bar. During the set, pay attention to the lower back and the torso: if the back arches or the body starts to swing, the kicks have outrun the core, and a smaller range done cleanly is worth more than a bigger one done loosely.
Muscles Worked
- Rectus Abdominis
- Primary
- Rectus Femoris
- Primary
- External Oblique
- High
- Flexor Carpi Radialis
- Medium
- Flexor Carpi Ulnaris
- Medium
- Latissimus Dorsi
- Medium
- Tensor Fasciae Latae
- Medium
- Sartorius
- Low
Instructions
- Stand under a pull-up bar, using a box if you cannot reach it, and grip the bar overhand with the hands about shoulder-width apart.
- Hang with the arms straight, the legs straight and the toes pointed. Wait until the body stops swinging.
- Set the shoulders by pulling them slightly down away from the ears and pressing the bar toward the hips with straight arms, so the lats switch on.
- Brace the abs, draw the ribs down and tuck the pelvis slightly so the lower back does not arch.
- Keeping the knee straight, raise one leg in front of you to about hip height while the other leg stays long beneath you.
- Lower that leg under control as the other leg rises to the same height, so the legs pass each other in a scissoring motion.
- Keep alternating at a steady pace with the torso still and the arms straight. Count one rep each time a leg reaches the top.
- Breathe steadily throughout. End the set when the torso starts to swing, the lower back arches or the knees bend.
- Bring both legs together beneath you and step down onto the box or the floor before letting go of the bar.
Common Mistakes
Arching the lower back
Letting the pelvis tip forward as the legs kick lets the hip flexors pull the lower back into an arch instead of the abs holding it flat.
Swinging the body
Kicking hard enough to rock the torso hands the work to momentum, so keep the hips still under the bar and slow the kicks down.
Bending the knees
Letting the knees bend shortens the lever and turns the exercise into an easier knee raise, so keep both legs straight with the toes pointed.
Hanging passively
Letting the shoulders sink up toward the ears loads the shoulder joint instead of the lats and makes the body harder to keep still.
Holding the breath
Breath-holding cuts the set short, so keep breathing steadily behind braced abs while the legs alternate.
Injuries
Hanging Flutter Kick is a low risk exercise when performed with proper technique. There is no external load and only one leg is raised at a time, so most problems come from letting the lower back arch, swinging, or hanging on tired shoulders and hands.
The lower back is the main strain point. The hip flexors attach to the lumbar spine and the pelvis, so when the abs stop holding the pelvis, each kick pulls the lower back into an arch. Keep the ribs down and the pelvis slightly tucked, and lower the height of the kicks as soon as the back starts to arch. The shoulders carry the whole body weight, so keep them active, pulled slightly away from the ears with the lats engaged, rather than sinking into the joint. People with shoulder hypermobility, a history of dislocation or current shoulder pain should get clearance before hanging. Step up to the bar from a box rather than jumping, keep the sets short at first, and stop each set before the grip or the form gives out.
If the movement is too hard, bend the knees with the Hanging Knee Raise, practice the leg action on the floor with Flutter Kicks, or build the hang with the Dead Hang. Once the kicks are smooth with a still torso, progress to the Hanging Straight Leg Raise, the Hanging L-Sit or Toes to Bar.
Stop the set when the lower back arches, the body starts to swing or the shoulders creep toward the ears. Stop the session if you feel sharp or pinching pain in the shoulder, pain in the lower back, pinching at the front of the hip, or numbness or tingling in the hands.
- Primary Focus
- Core
- Equipment
- Pull-up bar and body weight
- Modality
- Strength
- Difficulty
- Intermediate
Alternative Exercises
Frequently Asked Questions
- Q: Does the Hanging Flutter Kick target the lower abs?
Not on its own. The hip flexors lift each leg, and the rectus abdominis works as one muscle to keep the pelvis from tipping forward, so its lower part is not singled out. Holding a slight pelvic tuck for the whole set keeps more of the effort in the abs.
- Q: How is it different from the Hanging Straight Leg Raise?
In the Hanging Straight Leg Raise both legs rise together, so each rep moves twice the leg weight. The flutter kick lifts one leg at a time in a continuous rhythm, which makes it a useful step toward the two-legged version.
- Q: How is it different from floor flutter kicks?
On the floor, the ground supports the lower back and the legs move only a few inches. Hanging removes that support, adds grip and shoulder work, and lets each leg travel up to about hip height, so the trunk has more to control.
- Q: How many reps should I do?
Start with sets of 10 to 20 kicks, counting each leg, and add more only while the torso stays still and the lower back stays flat. Several short, clean sets are worth more than one long set where the body starts to swing.
- Q: What if my grip gives out before my core?
Use lifting straps while the focus is the core, or split the work into more, shorter sets. Train the grip on its own with the Dead Hang.
- Q: Why does the front of my hip cramp?
The hip flexors do the lifting, so they often tire first, especially in people who rarely train straight-leg hip flexion. Rest, lower the height of the kicks or switch to the Hanging Knee Raise for a few weeks while that strength builds.