How to Do TRX Oblique Crunches: Form and Benefits
Master the TRX oblique crunch with our expert guide. Learn correct form, avoid common mistakes, and build a stronger core with suspension training.
How to Perform
- Adjust the TRX straps to mid-calf length and place both feet into the foot cradles while facing away from the anchor point.
- Assume a high plank position with your hands directly under your shoulders and your body in a straight line from head to heels.
- Engage your core to stabilize your hips and pull both knees toward your right elbow in a controlled, sweeping motion.
- Squeeze your obliques at the peak of the contraction before slowly returning your legs to the center plank position.
- Repeat the movement by pulling your knees toward your left elbow, ensuring your hips do not sag toward the floor.
- Continue alternating sides while maintaining a steady tempo and keeping your shoulders stacked over your wrists.
Common Mistakes
- Allowing the lower back to arch or the hips to pike too high during the transition.
- Using momentum and swinging the legs rather than engaging the core for control.
- Letting the shoulders drift backward away from the hands which increases joint strain.
- Failing to maintain full tension on the TRX straps throughout the set.
Muscles Worked
Primary movers
- Obliquus externus abdominis
Stabilizers
- Rectus abdominis
- Serratus anterior
- Transverse abdominis
- Shoulder stabilizers
Related Guides
- 3008 Abdominal Crunch — Core
- Ab Roller — Core
- Ab wheel — Core
Obliquus externus abdominis · Core