Dumbbell Arnold Press
The dumbbell Arnold press is a seated overhead press with a twist: the dumbbells start in front of your shoulders with your palms facing you, and you turn them outward as you press overhead. It trains the front and side delts, with the triceps finishing the rep, and moves the shoulder through a longer path than a regular dumbbell press.
How to do the dumbbell Arnold press
Sit on a bench with an upright back support and rest a dumbbell on each thigh.
Kick the dumbbells up one at a time to shoulder height, palms toward you and elbows in front of your body.
Brace your trunk, keep your upper back against the pad and plant your feet.
Press the dumbbells up while you turn your palms outward and let your elbows swing out to the sides.
Finish with your arms straight overhead and your palms facing forward, the dumbbells above your shoulders.
Lower along the same path: the elbows come back in front of you and the palms turn toward your face.
Setup on the bench
Set the backrest upright or one notch short of upright, so your upper back has support without tipping you back. Sit with your feet flat and a little wider than your hips. Rest the dumbbells on your thighs, then lift them to your shoulders one at a time with a short knee kick, which spares your shoulders the awkward first lift. In the start position the dumbbells sit in front of your shoulders, roughly at chin height, your palms face you and your elbows point forward and down.
Bracing and breathing
Take a breath before each rep, tighten your midsection and press your upper back gently into the pad. Breathe out as the dumbbells pass the top of your head or at the top, then breathe in on the way down. Your lower back keeps a natural curve but never arches away from the pad to help a rep up.
The rotation: path of the dumbbells
The Arnold press combines two movements: the dumbbells rise, and your forearms turn from palms-in to palms-forward. Start the turn as soon as the dumbbells leave your shoulders and finish it shortly before your arms are straight, so both movements end together. Your elbows swing from in front of you out to the sides and stay under the dumbbells the whole way. At the top, the dumbbells sit above your shoulders, not touching each other.
Tempo and range of motion
Press with intent, pause briefly overhead and lower the dumbbells under control along the same path, turning your palms back toward you. Come all the way down to the start position on every rep: the bottom, with the upper arms in front, is what sets the Arnold press apart from a regular shoulder press. Keep the same range in every set, so your reps stay comparable.
Muscles worked by the dumbbell Arnold press
- Primary
- Front delts
- Side delts
- Secondary
- Triceps
- Chest
The front delts lift the arm at the start, while your upper arms are still in front of your body. As the elbows swing out to the sides, the side delts take a growing share of the work. The triceps straighten the elbows in the top half, and the upper chest helps in the first part of the press. A systematic review of deltoid EMG found the side delts most active in raises out to the side, so the Arnold press complements lateral raises rather than replacing them.
Common Arnold press mistakes
Turning the dumbbells all at once
Snapping the palms around at the bottom or the top makes the rotation a separate move. Spread the turn over the whole press, so the dumbbells rotate while they rise.
Leaning back
An arched lower back tilts the press toward an incline press and shifts work toward the chest. Keep your ribs down and your back against the pad.
Letting the elbows drift behind you
At the top and on the way down, elbows that move behind the body pull the dumbbells back and off balance. Keep them in line with or slightly in front of your torso.
Cutting the bottom short
Turning around at forehead height skips the part of the range that sets the Arnold press apart. Lower until the dumbbells are back in front of your shoulders.
Banging the dumbbells together
Clanking them at the top costs you control just when your arms are longest. Finish with the dumbbells above your shoulders, a little apart.
How Muscla coaches the Arnold press
- Muscla counts the Arnold press as a compound lift. If it is the first compound of your day, warm up with two ramp sets: about 50% of your working weight for 8 reps, then about 75% for 3.
- End working sets with about two reps in the tank, two to three when you train for strength and one more if you are new to training. Going to failure adds little or no extra muscle, but more fatigue.
- Rest 2 minutes between sets for strength and 90 seconds for muscle and other goals. In trained men, 3-minute rests built more strength than 1-minute rests, so do not cut the pause short.
- When every set reaches the top of your range, add one step: about 2.5% for upper-body lifts, at least the smallest dumbbell jump, usually 2 kg or 5 lb.
- After the last set, Muscla asks “How heavy was that?” Light adds weight, Good keeps the normal progression, Heavy holds it, At the limit holds it or takes off one step.
Dumbbell Arnold press sets, reps and rest
| Goal | Reps | Rest |
|---|---|---|
| Strength | 8–12 | 2 min |
| Muscle | 6–10 → 8–12 | 90 s |
| Lose fat | 6–12 | 90 s |
| Fit | 8–12 | 90 s |
| Comeback | 8–12 | 90 s |
An arrow marks the range for the next 4-week block.
The Arnold press counts as a compound lift in the Muscla training logic: for muscle you start at 6–10 reps and move to 8–12 in the next 4-week block. In Muscla's weekly volume, each set counts half for the shoulders and half for the triceps. Over the week, Muscla rotates compound lifts through their variations instead of repeating the same press.
Estimate your Arnold press one-rep max
Filled in with example values. Replace them with yours.
Estimated 1RM
Brzycki 29.8 · Lombardi 29.5
Epley: 24 × (1 + 8 ÷ 30) = 30.4 kg
| Reps | Weight | % of 1RM |
|---|---|---|
| 1 | 30 kg | 100 % |
| 2 | 27.5 kg | 94 % |
| 3 | 27.5 kg | 91 % |
| 4 | 27.5 kg | 88 % |
| 5 | 25 kg | 86 % |
| 6 | 25 kg | 83 % |
| 7 | 25 kg | 81 % |
| 8 | 25 kg | 79 % |
| 9 | 22.5 kg | 77 % |
| 10 | 22.5 kg | 75 % |
| 11 | 22.5 kg | 73 % |
| 12 | 22.5 kg | 71 % |
Dumbbell Arnold press alternatives
- Barbell Seated Overhead Press
- Dumbbell seated shoulder press
- Dumbbell standing overhead press
- Machine Shoulder Press
- Cable shoulder press
- Barbell standing close grip military press
- Kettlebell two arm military press
- Band shoulder press
- Pike-to-cobra push-up
- Handstand push-up
Arnold press questions
What muscles does the Arnold press work?
Mainly the front and side delts. The triceps straighten your elbows at the top, and the upper chest helps at the start, while your upper arms are still in front of you.
Is the Arnold press better than a regular dumbbell shoulder press?
Neither is clearly better. The Arnold press trains the same muscles through a longer, rotating path; the regular press keeps the elbows out to the sides the whole way. Pick the one you can press with the best control, or use both over the week.
Seated or standing Arnold press?
Seated is the standard, because the back support stops you from leaning back. In a study of regular shoulder presses, the standing dumbbell press produced the most deltoid activity, but lifters pressed about 10% more seated.
How heavy should I go on the Arnold press?
Muscla's first suggestion for a man new to training is about 0.12 times body weight per hand for overhead dumbbell presses, rounded down to your dumbbells; for women about 30% less. If you then get clearly more reps than planned in your first set, the app raises the weight for the remaining sets.
Does the Arnold press work the side delts?
Yes, they help as the elbows swing out to the sides. For the most side delt work, add lateral raises: a systematic review ranked raises out to the side highest for side delt activity.
Train it with Muscla
Muscla plans your sets, reps and rest, and sets the next weight after every session.
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Sources
- Saeterbakken AH, Fimland MS. Effects of body position and loading modality on muscle activity and strength in shoulder presses. J Strength Cond Res. 2013;27(7):1824-1831. PubMed
- Rabello R, Bertozzi F, Hauschild de Freitas IL, et al. Activation of the three deltoid muscle portions during common strengthening exercises: a systematic review. J Bodyw Mov Ther. 2024;40:1309-1325. PubMed
- Schoenfeld BJ, Pope ZK, Benik FM, et al. Longer interset rest periods enhance muscle strength and hypertrophy in resistance-trained men. J Strength Cond Res. 2016;30(7):1805-1812. PubMed
- Refalo MC, Helms ER, Trexler ET, et al. Influence of resistance training proximity-to-failure on skeletal muscle hypertrophy: a systematic review with meta-analysis. Sports Med. 2023;53(3):649-665. PubMed