With the knees bent and the feet held down, the spine curls and the hips flex until the trunk is upright, then lowers three-quarters of the way and repeats: the hip flexors join in and the spine bears more load than in the curl-up or crunch.
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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.
With the knees bent and the feet held down, the spine curls and the hips flex until the trunk is upright, then lowers three-quarters of the way and repeats: the hip flexors join in and the spine bears more load than in the curl-up or crunch.
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.
Sit-ups load the lumbar spine more than curl-ups; skip them if bending forward aggravates your back. 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.