Exercise
One Arm Dumbbell Preacher Curl: How to Do It, Muscles Worked
The One Arm Dumbbell Preacher Curl is a beginner-level strength exercise that primarily works the biceps. It uses dumbbell, and is performed in 5 steps, following the form cues, common mistakes and sets/reps guidance below.
What muscles does the One Arm Dumbbell Preacher Curl work?
The One Arm Dumbbell Preacher Curl primarily targets the biceps, with no listed secondary muscles in the dataset. It's classified as a beginner-level strength movement using dumbbell.
What are the most common One Arm Dumbbell Preacher Curl mistakes?
- Cutting the rep short at the top or bottom instead of using the full stretch and contraction.
- Speeding through the eccentric (lowering) phase instead of controlling it.
- Swinging the weight with body momentum instead of moving it under muscular control.
- Using a heavier weight than can be controlled through a full range of motion.
How should I program the One Arm Dumbbell Preacher Curl — sets, reps and frequency?
As a single-joint isolation exercise, it responds well to a higher 10-15 reps for 2-4 sets, usually taken close to muscular failure. It tolerates higher frequency than a heavy compound lift — twice a week for the same muscle group is common. Add small amounts of weight or an extra rep once every working set can be completed with good form — the same progressive overload principle behind every strength exercise in the library.
What are good One Arm Dumbbell Preacher Curl variations and alternatives?
- Concentration Curls — dumbbell, beginner level, biceps
- Dumbbell Bicep Curl — dumbbell, beginner level, biceps
- Hammer Curls — dumbbell, beginner level, biceps
- Incline Dumbbell Curl — dumbbell, beginner level, biceps
| Attribute | Value |
|---|---|
| Level | Beginner |
| Equipment | Dumbbell |
| Category | Strength |
| Primary muscles | Biceps |
| Secondary muscles | — |
How to do the One Arm Dumbbell Preacher Curl, step by step:
- Step 1. Grab a dumbbell with the right arm and place the upper arm on top of the preacher bench or the incline bench. The dumbbell should be held at shoulder length. This will be your starting position.
- Step 2. As you breathe in, slowly lower the dumbbell until your upper arm is extended and the biceps is fully stretched.
- Step 3. As you exhale, use the biceps to curl the weight up until your biceps is fully contracted and the dumbbell is at shoulder height. Again, remember that to ensure full contraction you need to bring that small finger higher than the thumb.
- Step 4. Squeeze the biceps hard for a second at the contracted position and repeat for the recommended amount of repetitions.
- Step 5. Switch arms and repeat the movement.
Key takeaways
- The One Arm Dumbbell Preacher Curl is a beginner-level strength exercise using dumbbell.
- Primary muscles worked: Biceps.
- A typical working range is 10-15 reps for 2-4 sets, usually taken close to muscular failure.
- The most common technical fault is cutting the rep short at the top or bottom instead of using the full stretch and contraction.
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Try IRONSLOG freeFrequently asked questions
Is the One Arm Dumbbell Preacher Curl suitable for beginners?
Yes — the dataset lists the One Arm Dumbbell Preacher Curl as a beginner-level movement, though anyone new to training should still start with light weight (or no added weight) to learn the pattern first.
What equipment do I need for the One Arm Dumbbell Preacher Curl?
A dumbbell. No other equipment is required for the standard version of this movement.
What's the difference between the primary and secondary muscles listed?
Primary muscles (Biceps) do most of the work and are usually the limiting factor in the set. Secondary muscles assist or stabilize but aren't the main driver of the movement.