Leg Raise Oblique Crunch
- Target muscle
- Gluteus Medius, Iliopsoas, Obliques
- Synergist muscles
- Quadriceps, Rectus Abdominis, Tensor Fasciae Latae
- Equipment
- Body weight
- Body part
- Waist
- Type
- Strength
The leg raise oblique crunch is a bodyweight strength exercise that targets the gluteus medius, iliopsoas, and obliques while the quadriceps, rectus abdominis, and tensor fasciae latae provide synergistic support. By combining a lateral leg raise with a side crunch, it trains hip abduction and rotational core stability in a single movement. It is well suited for building lateral core strength, improving hip stability, and reinforcing control along the side of the torso.
How to do the Leg Raise Oblique Crunch
- 1Lie on your side on a mat with your body in a straight line, legs stacked on top of each other and your bottom arm extended along the floor to support your head.
- 2Place your top hand lightly behind your head or rest it on the floor in front of your chest for balance.
- 3Brace your core and press your waist gently toward the mat to keep your spine neutral.
- 4In one coordinated movement, raise your top leg upward and simultaneously crunch your torso laterally, bringing your elbow and hip toward each other.
- 5Pause briefly at the top when you feel a contraction through the obliques and a stretch in the gluteus medius.
- 6Slowly lower your leg and return your torso to the starting position with control, avoiding letting either the leg or torso drop passively.
- 7Complete all reps on one side, then roll over and repeat on the opposite side.
Form tips
- Keep the movement deliberate and controlled on both the way up and the way down — a slow lowering phase increases time under tension in the obliques and gluteus medius.
- Initiate the crunch from your obliques rather than pulling your neck with your hand; your hand behind your head is a rest, not a lever.
- Keep your hips stacked vertically throughout — letting the pelvis roll forward or backward shifts the load away from the target muscles.
- Exhale as you crunch and raise the leg; inhale as you return to the start to maintain intra-abdominal pressure and core stability.
- Reduce the range of motion if you feel strain in the lower back; a smaller, well-controlled arc is more effective than a large, compensated one.
Common mistakes
- Rolling the hips forward or backward during the raise: this removes the lateral load from the obliques and gluteus medius and stresses the lower back instead.
- Using momentum to swing the leg up: swinging bypasses the gluteus medius and tensor fasciae latae, turning the move into a ballistic motion rather than a controlled strength exercise.
- Pulling on the neck to force the crunch: this strains the cervical spine and means the obliques are not generating the movement.
- Letting the bottom hip sag into the mat: a sagging hip collapses the lateral chain and reduces oblique engagement on both sides.
- Rushing through the lowering phase: dropping the leg and torso quickly eliminates the eccentric stimulus, which is a significant portion of the muscle-building work.
Frequently asked questions
What muscles does the leg raise oblique crunch work?
The primary muscles are the gluteus medius, iliopsoas, and obliques. The quadriceps, rectus abdominis, and tensor fasciae latae act as synergists, stabilizing the movement throughout the range of motion.
How is the leg raise oblique crunch different from a standard side-lying leg raise?
A standard side-lying leg raise isolates hip abduction, primarily targeting the gluteus medius and tensor fasciae latae. The oblique crunch component adds lateral spinal flexion, which recruits the obliques and makes it a combined hip-and-core exercise rather than a pure hip isolation movement.
Can beginners do this exercise?
Yes. Because it uses only bodyweight and requires no equipment, it is accessible to most fitness levels. Beginners should focus on a smaller range of motion and slow tempo to build correct motor patterns before increasing rep counts.
How many sets and reps are recommended?
For strength and stability, 2–4 sets of 10–15 controlled reps per side is a common range. Prioritize quality of movement and full muscular contraction over reaching a specific rep target.
Does this exercise require any equipment?
No equipment is needed. A mat or soft surface is helpful for comfort when lying on your side, but the exercise is performed entirely with bodyweight.
