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  7. Band Decline Sit Up

Exercise guide

Band Decline Sit Up

  • Intermediate
  • Compound
  • Rep-based
  • Waist

This variation intensifies the traditional decline sit-up by adding progressive resistance, forcing the abdominals to work harder as they reach the peak of the contraction. It effectively targets the rectus abdominis and hip flexors through an extended range of motion provided by the decline angle.

Reviewed by the Crucible team · Updated June 2026

Watch the Band Decline Sit Up demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Abs
  • Obliques

Secondary

  • Erector spinae
  • Hip flexors
  • Quadriceps
  • Serratus anterior

Equipment

  • Resistance band

Setup

  1. Secure a resistance band to a low anchor point behind the decline bench or to the base of the bench itself.
  2. Sit on the decline bench and securely hook your feet under the padded rollers.
  3. Hold the resistance band handles or ends at chest height, ensuring there is slight tension in the band even at the top position.

How to do it

  1. Inhale as you slowly lower your torso toward the bench in a controlled manner, stopping just before your back touches the pad.
  2. Exhale and contract your abdominals to pull your torso upward against the resistance of the band.
  3. Continue the movement until your torso is vertical, focusing on a 2-second eccentric (lowering) and a 1-second concentric (lifting) phase.

Form checklist

  • Keep your chin tucked slightly toward your chest to avoid neck strain.
  • Maintain a slight natural curve in the spine rather than keeping it perfectly flat.
  • Ensure the movement is driven by your core and not by pulling the band with your arms.
  • Keep your feet and ankles firmly locked under the rollers to stabilize the lower body.

Pro tips

  • Focus on 'rolling' your spine up one vertebra at a time to maximize abdominal fiber recruitment and minimize hip flexor dominance.
  • Pause for a split second at the top of the movement to emphasize the peak contraction against the band's maximum tension.

Make it harder

  • Hold the band with arms fully extended overhead throughout the movement to increase the lever arm and difficulty.
  • Add a slight torso rotation at the top of the sit-up to further engage the obliques and serratus anterior.

Frequently asked

What muscles does the band decline sit up work?
The band decline sit up primarily targets the abs and obliques, and also works the erector spinae, hip flexors, quadriceps, and serratus anterior as secondary muscles.
What equipment do you need for the band decline sit up?
The band decline sit up uses resistance band.
Is the band decline sit up good for beginners?
The band decline sit up is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 3/4 Sit-UpBeginner · abs and obliques
  • 45 Degree Bicycle Twisting CrunchIntermediate · abs and obliques
  • 45 Degree Lean Back Alternate Knee RaiseBeginner · abs and obliques
  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals

Train this with a plan, not guesswork

Crucible builds the band decline sit up into a precise program around your body, equipment, location, and time.

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