Instructions

1

Lie supine on a flat surface with legs extended fully. Position body in a neutral spine alignment with arms at sides or across chest. Ensure lower back maintains contact with floor to prevent hyperextension.

2

Engage core musculature and prepare for the crunch motion. Keep neck neutral and avoid pulling on head. Position hands either crossed over chest or lightly supporting head behind ears without pulling neck forward.

3

Lower body to starting supine position by slowly releasing tension in abdominal muscles, allowing torso to extend back to mat. Maintain controlled movement throughout descent with lower back remaining neutral and not arching excessively.

4

Contract rectus abdominis to lift shoulders and upper back off floor by flexing spine and bringing ribcage toward pelvis. Exhale during this concentric phase, lifting torso approximately 30-45 degrees without using momentum. Hold briefly at top before returning to start.

PRIMARY MUSCLESRectus Abdominis

SECONDARY MUSCLESIliopsoas, Rectus Femoris, Sartorius, Obliquus Externus Abdominis

EQUIPMENTBody weight

DIFFICULTYBeginner

Overview

When programming for Rectus Abdominis growth, the Oblique Crunches Floor stands out as a highly efficient Strength choice. Performing this movement with Body weight forces your stabilizer muscles to work in tandem with the primary movers, translating to functional strength and enhanced muscular endurance.

Benefits

Promotes balanced muscular development by effectively recruiting the Rectus Abdominis and associated synergists.
Reduces the likelihood of Waist injuries by reinforcing connective tissue strength.
Allows for a natural movement path that closely mimics functional daily activities.

Common Mistakes

Using excessive momentum to swing the Body weight rather than controlling the eccentric phase.
Failing to achieve a full range of motion, which drastically limits Rectus Abdominis engagement.
Rushing the repetition tempo instead of focusing on the mind-muscle connection with the Waist.
Losing core tension, leading to poor spinal alignment and reduced power output.

Muscle Anatomy

The primary driver is the Rectus Abdominis. However, the movement also recruits Iliopsoas, Rectus Femoris, Sartorius, Obliquus Externus Abdominis to maintain control of the Body weight.

Exercise Variations

Dumbbell Oblique Crunches Floor
Cable Oblique Crunches Floor
Banded Oblique Crunches Floor

Beginner Tips

If you are new to the Oblique Crunches Floor, focus on mastering the movement pattern with zero weight before adding Body weight.

Oblique Crunches Floor