Rutgers Cancer Institute of New Jersey
195 Little Albany Street
New Brunswick, NJ 08903-2681
Name of Exercise —Bent knee sit-up
Type of Exercise —Multi-joint
Muscles Used —Abdominals
© 2009 Nucleus Medical Media, Inc.
It is important to perform a posterior pelvic tilt prior to performing the crunch. To do this, press your lower back into the floor while curling your pelvis slightly upward. This will engage your abdominal muscles from the start and make the movement more efficient. Place your hands across your chest or down at your sides rather than behind your head.
National Association for Health and Fitness
President's Council on Fitness, Sport & Nutrition
Canadian Society for Exercise Physiology
Health Canada Physical Activity
10 steps to perfect sit-ups. HubPages website. Available at: http://christophallen.hubpages.com/hub/10-Steps-to-Perfect-Sit-Ups. Updated April 23, 2013. Accessed August 8, 2016.
Bent-knee sit-up/crunches. American Council on Exercise website. Available at: http://www.acefitness.org/acefit/fitness_programs_exercise_library_details.aspx?exerciseid=52. Accessed August 8, 2016.
Last reviewed August 2016 by Michael Woods, MD Last Updated: 8/8/2016