- Bicycle Crunch Exercise
- Captain's Chair Exercise
- Ab Crunch on an Exercise Ball
- Vertical Leg Crunch
- Long Arm Crunch
- Reverse Crunch
- Plank (Hover) Exercise
- Traditional (Basic) Abdominal Crunch
- Half Curl
- Crossover Crunch
- Seated Oblique Twists with Medicine Ball
- Oblique Crunch
- Alternating Supermans
- The Best and Worst Ab Exercises
- Core Training
- Abdominal Exercises -- Tips for Strong, Flat Abs
- Abdominal Exercises and Core Workouts
- Abdominal Exercise Equipment
Source
Kravitz, Len. SuperAbs Resource Manual. Power of Excellence. (1998) 1, 1-20.
Kravitz, Len, Low-back stability training. IDEA Personal Trainer, (2001) 12(9), 17-18.


