How to Do Barbell Ab Rollout - On Knees
Start and end of one clean rep of Barbell Ab Rollout - On Knees.
Quick facts
| Primary muscle | Core |
|---|---|
| Secondary muscles | Shoulders |
| Equipment | Barbell |
| Category | Strength |
How to perform Barbell Ab Rollout - On Knees
- Hold an Olympic barbell loaded with 5-10lbs on each side and kneel on the floor.
- Now place the barbell on the floor in front of you so that you are on all your hands and knees (as in a kneeling push up position). This will be your starting position.
- Slowly roll the barbell straight forward, stretching your body into a straight position. Tip: Go down as far as you can without touching the floor with your body. Breathe in during this portion of the movement.
- After a second pause at the stretched position, start pulling yourself back to the starting position as you breathe out. Tip: Go slowly and keep your abs tight at all times.
Muscles worked
- Core (primary): braces the trunk and resists twisting to protect the spine.
- Shoulders (secondary): raises and rotates the arms and drives everything overhead.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Form tips
- Brace as if about to take a light punch and breathe shallowly — don't hold your breath for the whole set.
- Keep the bar path close and stacked over your mid-foot; letting it drift forward wastes force and loads the lower back.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Breathe out on the effort and in on the return, keeping one steady rhythm across the set.
Common mistakes
- Cranking with the hip flexors or neck instead of moving from the trunk.
- Loading the bar heavier than your form allows and turning strict reps into a whole-body heave.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does Barbell Ab Rollout - On Knees work?
Barbell Ab Rollout - On Knees mainly works the core, with the shoulders helping as secondary movers.
What equipment do I need for Barbell Ab Rollout - On Knees?
Barbell Ab Rollout - On Knees needs a barbell and plates (plus a rack or bench where the movement calls for one).
How many sets and reps should I do for Barbell Ab Rollout - On Knees?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
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