Exercise guide · new
Machine Abdominal Crunch
Machine Abdominal Crunch uses machines in a isolation movement that primarily trains core. Use it to train the target muscles through a stable, measurable range.
- Equipment
- machines
- Typical range
- 10–25 reps
- Also works
- Supporting stabilizers
01 · Set up
Take the exercise-specific start position with your hands, feet, and resistance secured.
Brace your abdomen before moving and keep your pelvis and rib cage aligned.
02 · Perform
Move the trunk through the exercise-specific path while the hips and limbs remain controlled.
Use a range you can own without pulling on the neck or using momentum.
Return slowly to the starting position and re-establish your brace.
Coaching tips
- Keep the non-working joints still.
- Use the full controlled range.
- Own the return phase.
Common mistakes
- Moving the torso to create momentum.
- Using resistance that shortens the range.
- Letting the resistance drop on the return.
What it should feel like
Expect controlled effort through the core, not sharp or joint-focused pain.
Stop or modify when
Stop or shorten the range for sharp, sudden, worsening, or joint-focused pain; choose a reviewed alternative when needed.
Reviewed alternatives