Multiple studies demonstrate that abdominal and core stability exercises effectively activate target musculature and improve abdominal strength, endurance, and overall core function.
The retrieved papers provide robust direct and indirect evidence showing that abdominal and core stability exercises activate targeted muscle groups (such as the rectus abdominis, obliques, and transversus abdominis) and lead to measurable improvements in core strength, endurance, and trunk control across various populations. None of the papers refute the claim.