There has been recent discussion that sit-ups are harmful to your back. Sit-ups engage hip flexor muscles, which are attached to the lumbar spine and lumbar discs. In theory, this movement and contraction can potentially cause irritation. However, this is all based on biomechanical theory and not real scientific evidence. The sit-up is a core exercise designed to activate our rectus abdominus, which is the muscle that shows off a wonderful six-pack of abs. The sit-up alone will not achieve this, as what is required is a well-designed and well-rounded exercise program, along with a sound nutritional plan.
Dan Girardin, MPT, BESS Physiotherapist, PrairieTrailPhysio.ca