Lying with the knees bent and the feet flat, the shoulders curl up off the floor while the low back stays down: more spine flexion than the curl-up, and among the highest rectus abdominis activity measured.
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Abdominal curl family
These tiers compare demands within this family, not universal safety or a mandatory sequence. Load, range, balance and your circumstances can change difficulty. Choose deliberately; pain does not select a progression.
Lying with the knees bent and the feet flat, the shoulders curl up off the floor while the low back stays down: more spine flexion than the curl-up, and among the highest rectus abdominis activity measured.
Source-researched guide. Clinical review is pending.
No universal dose is assigned. Choose a manageable amount for your current capacity, leave room for controlled repetitions, and allow recovery. A clinician’s individual plan takes priority.
Repeated spine bending can aggravate some back problems; choose the curl-up if it does. This is movement education, not an assessment or treatment prescription. Stop for sharp or increasing pain, dizziness, numbness or tingling; seek individual guidance for symptoms, injury or restrictions.
Sources support the educational description; they do not establish that this exercise is suitable for you.
Unlicense · Free Exercise DB contributors; derived from wrkout/exercises.json. Text import; no photographs or media. · Revision f00c92c7dcf1216a928a52c3706c7ce8e2f71ed5
No variation is labeled clinically validated.