A weighted sit-up with the feet secured, a weight at the chest pressed overhead as the trunk sits all the way up: the sit-up's hip flexion and an added load both raise the work, though fixed feet and active hip flexion also raise the load on the spine.
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Abdominal curl family
Otis-up
Harder option
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.
A weighted sit-up with the feet secured, a weight at the chest pressed overhead as the trunk sits all the way up: the sit-up's hip flexion and an added load both raise the work, though fixed feet and active hip flexion also raise the load on the spine.
DemandHard
Equipment requiredMedicine ball + Floor space
Muscle focusAbs · Hip flexors · Shoulders · Triceps
The figure gets into position, then repeats the movement. Technical checks passed; qualified exercise review is pending.
Watch this variation on the 3D figure above: it gets into position, then repeats the movement.
Source-researched guide. Clinical review is pending.
How to move
Lie back with the knees bent and the feet secured, a medicine ball held at the chest.
Sit the trunk all the way up, pressing the ball overhead as you rise.
Lower the ball to the chest as the trunk returns to the floor.
Form cues
Start light.
Lower slowly rather than dropping back.
Practice and cautions
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.
Fixed feet and full sit-ups load the lower back: leave it out with back pain. 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.
Unlicense · Free Exercise DB contributors; derived from wrkout/exercises.json. Text import; no photographs or media. · Revision f00c92c7dcf1216a928a52c3706c7ce8e2f71ed5