The stability ball pike with knee tuck is a plank-based core exercise performed with the shins on a stability ball that trains theabsand hip flexors through a straight-leg pike and a tuck. Rolling the ball in with straight legs lifts the hips toward the ceiling and folds the trunk at the hips, while the tuck bends the knees under the chest, so one rep loads the abs through two lever lengths on an unstable base the shoulders must also control. It is a demanding movement, programmed late in a session by lifters who own a clean ball plank.
What Muscles Does the Stability Ball Pike with Knee Tuck Work?
- Primary: Rectus abdominis, hip flexors (iliopsoas, rectus femoris)
- Secondary: External and internal obliques, serratus anterior, anterior deltoids
- Tertiary: Triceps brachii, pectoralis major, erector spinae, gluteus medius
How Do You Set Up for the Stability Ball Pike with Knee Tuck?
Use a ball sized so that your shoulders sit level with your hips in a plank when your shins rest on it. Kneel behind the ball, walk your hands forward and roll over it until your shins are on top and your hands are under your shoulders. Point your toes, keep your feet together and set your body in one line. Push the floor away, tuck your pelvis and look between your hands.
How Do You Perform the Stability Ball Pike with Knee Tuck?
- Lock your plank with straight arms, shoulders over your wrists and shins pressed into the ball.
- Pike your hips toward the ceiling by pulling the ball toward your hands with straight legs until your feet are on top of the ball.
- Stop at the top of the pike when your hips are stacked above your shoulders.
- Hold for one count, pressing the floor away, then roll back until your shins are on the ball.
- Tuck your knees under your chest by bending them and rolling the ball in on your shins until your thighs are close to your torso.
- Extend your legs back to the plank under control, letting the ball roll out until your shins rest on it again.
What Are the Key Form Cues?
- Hips to the ceiling, not head to the floor: in the pike, think of lifting your tailbone straight up while your hands stay planted and your arms stay long.
- Chest over the wrists: keep your shoulders stacked above your hands through both phases, so the abs move the ball rather than your body drifting back.
- Press your shins into the ball during the tuck so the ball rolls straight rather than skating sideways.
- Keep your gaze on the floor between your hands so your neck stays neutral.
- Squeeze your thighs together so the ball tracks under your midline.
What Are the Most Common Mistakes?
- Attempting it before the plank on the ball is stable: the ball wobbles, the hips sag and the shoulders take the strain, so hold a 30-second ball plank first.
- Bending the knees during the pike: the pike collapses into a second tuck and the straight-leg lever is lost, so keep the legs locked until the hips are stacked.
- Sagging the hips in the plank between reps: the lumbar spine hangs in extension with the abs unloaded, so re-tuck the pelvis before every pike and tuck.
- Letting the shoulders shift behind the hands: the weight moves onto the toes and the ball rolls away, so keep the chest over the wrists.
- Racing the ball back out: the return is uncontrolled and the ball can slip, so extend the legs slowly and re-set the plank each time.
What Are the Best Stability Ball Pike with Knee Tuck Variations?
- Stability ball knee tuck: the tuck alone, for lifters building the plank stability the full version needs.
- Stability ball pike: the straight-leg pike alone, isolating the longer lever and the hip fold.
- Pike plank: a static pike hold on the ball that trains the top position without the roll.
- Single-leg ball pike: one leg held off the ball while the other pulls it in, loading one hip flexor.
- Sliding disc pike with knee tuck: the feet slide on discs instead of the ball, keeping the pattern with less wobble.
How Do You Progress the Stability Ball Pike with Knee Tuck?
- Bodyweight only; progress by moving your hands one hand-width forward so the lever lengthens rather than by adding load.
- Start with 5 reps and add 1 per session until you reach 10 clean pike-tuck pairs.
- Begin at 2 sets and add a third once both sets finish with your hips still high in every pike.
- Add a 3-second hold at the top of the pike, or slow the return to a 3-second count.
How Should You Program the Stability Ball Pike with Knee Tuck?
Program the stability ball pike with knee tuck as a core finisher after your main lifts on a push or full-body day, when the shoulders are warm. Two sessions a week are enough. Perform 2 to 3 sets of 5 to 10 reps with 60 to 90 seconds of rest. Pair it with a hanging knee raise so the abs also train in a stable pattern.