Barbell Seated Close-grip Concentration Curl
- Target muscle
- Brachialis
- Synergist muscles
- Biceps Brachii, Brachioradialis
- Equipment
- Barbell
- Body part
- Upper Arms
- Type
- Strength
The barbell seated close-grip concentration curl is a strict isolation exercise that emphasizes the brachialis, the muscle beneath the biceps that adds thickness to the upper arm, with the biceps brachii and brachioradialis assisting. Performed seated with a narrow grip on the bar and elbows braced, it removes momentum so the loaded arm flexors do all the work.
How to do the Barbell Seated Close-grip Concentration Curl
- 1Sit on a bench with your feet flat on the floor and a barbell resting across your thighs.
- 2Take a shoulder-width or slightly narrower underhand grip on the bar, hands close together near the center of the knurling.
- 3Lean your torso slightly forward and brace your upper arms against the front of your thighs or against your sides so your elbows stay fixed.
- 4Let the bar hang with your arms nearly straight to set the bottom stretch on the flexors.
- 5Curl the bar up slowly by bending only at the elbows, keeping your upper arms pinned and your torso still.
- 6Squeeze the contraction at the top without letting your elbows drift forward or your shoulders shrug up.
- 7Lower the bar under control along the same path until your arms are nearly straight again.
- 8Complete your reps, then set the bar back down on your thighs or the floor with control.
Form tips
- Keep the tempo strict and slow — the value of this curl comes from eliminating swing, so let the muscle move the weight, not body english.
- Drive the squeeze by thinking about bending the elbow rather than lifting the hands, which keeps tension on the brachialis.
- Keep your wrists neutral and stacked over your forearms instead of curling them in, so the load stays on the elbow flexors.
- Pick a weight you can control through a full range; a lighter barbell with clean reps beats a heavy one you have to heave.
Common mistakes
- Swinging the torso or using your shoulders to throw the bar up, which steals the load from the brachialis and biceps and defeats the point of the strict curl.
- Letting the elbows drift forward or off your thighs at the top, which shortens the range and turns it into a partial rep with less tension on the target muscle.
- Cutting the descent short or dropping the bar, which skips the stretched portion where the flexors do a lot of growth work.
- Going too heavy and cheating the reps, which adds wrist and elbow strain without loading the muscle you are trying to isolate.
Frequently asked questions
What muscles does the barbell seated close-grip concentration curl work?
It primarily targets the brachialis, the muscle under the biceps that builds arm thickness, with the biceps brachii and brachioradialis assisting as synergists.
Why use a close grip on this curl?
A close, narrow grip shifts emphasis toward the brachialis and brachioradialis compared with a wider grip, helping build the lower and outer part of the upper arm.
Is this curl good for beginners?
Yes. Because you sit and brace your elbows, it is easy to keep strict form, making it a beginner-friendly way to learn isolated elbow flexion. Start with a light barbell and add weight only when your reps stay clean.
How many sets and reps should I do?
For arm isolation, 3 to 4 sets of 10 to 15 controlled reps works well. Keep the weight light enough to avoid any swinging and focus on a strong squeeze at the top.
What's a good alternative to this exercise?
A dumbbell concentration curl, a close-grip barbell curl, or a hammer curl are good alternatives that also bias the brachialis and brachioradialis while keeping the elbows fixed.
