No matter which variations you follow, crunches have the advantage over sit-ups of being able to better target abdominal muscles. "Because the movement is smaller, you can control momentum more," ...

The erector spinae muscles play a vital role in maintaining proper posture, spinal stability, and overall back health. Strengthening these muscles can help prevent lower back pain, improve ...

with higher electromyographic values in the lumbar erector spinae and substantially higher ones in the rectus femoris during the push movement. Both concentric and eccentric contractions occurred in ...