Name of Exercise—Bent knee sit-up
Type of Exercise—Multi-joint
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
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.