Incline Dumbbell Curl
The incline dumbbell curl is a biceps curl done lying back on an incline bench, so your arms hang behind your body and the biceps works from a stretched position. It trains the biceps (especially the long head) and the brachialis, and it is the standard free-weight curl for loading the biceps at long muscle lengths.
Also called: Incline Curl, Incline DB Curl, Incline DB Curl (full stretch), Incline Bench Dumbbell Curl · Equipment: dumbbell · Pattern: pull
Step by step
- Set an adjustable bench to an incline of about 45–60°. Sit back with your head, upper back and hips on the pad and your feet flat on the floor.
- Hold a dumbbell in each hand and let your arms hang straight down from the shoulders, palms facing forward. Your upper arms stay vertical, just behind your torso.
- Keep your shoulders back against the pad and your wrists straight, in line with your forearms.
- Curl both dumbbells up by bending only at the elbows. Keep your upper arms still, so your elbows point at the floor throughout.
- Curl to the top without letting your elbows travel forward, and turn your little finger slightly up as you finish.
- Bring the dumbbells down under control over about two seconds until your elbows are straight but not locked back. Feel the stretch in the front of your upper arm at the bottom.
- Start the next rep from a still, straight-arm position with no swing. After the last rep, let the dumbbells hang, then sit up and set them down beside the bench.
- Arms hang straight down behind you, elbows pointing at the floor
- Bend only at the elbows
- Straight arms at the bottom of every rep
- Two seconds down into the stretch
- Shoulders and head stay on the pad
- Little finger turns up at the top
In VALDA, these cues are one tap away on the exercise while you train.
What it trains
| Muscle | Role | Evidence |
|---|---|---|
| Biceps brachii: long head | Prime mover | C |
| Biceps brachii: short head | Prime mover | B |
| Brachialis | Secondary | B |
| Brachioradialis | Secondary | C |
| Anterior deltoid | Stabiliser | D |
| Forearm flexors | Stabiliser | D |
Evidence grades: A = strong research base · B = good · C = limited · D = coaching consensus.
What goes wrong, and the fix
Elbows travelling forward as you curl
Fix: Keep the upper arms hanging vertical, elbows pointing at the floor, all rep.
Cutting the bottom short of straight arms
Fix: Bring the dumbbells down until the elbows are straight, then start the next rep.
Dropping into the bottom position
Fix: Take about two seconds on the way down and pause briefly with straight arms.
Bench set too upright
Fix: Set the bench to about 45–60° so the arms hang just behind your torso.
Head and shoulders lifting off the pad
Fix: Keep your head, shoulders and hips on the pad from the first rep to the last.
Wrists curling or bending back
Fix: Hold the wrists straight, in line with the forearms, through the whole rep.
What the research says
Muscle growth · first choiceRehab & prehabGeneral fitnessEndurance
- Long muscle lengths — Trials on the elbow flexors find that training at longer muscle lengths produced greater biceps thickness and strength gains than training at shorter lengths. In one 8-week trial the incline curl produced more growth near the shoulder end of the arm and the preacher curl more near the elbow; a trial comparing the preacher with a shoulder-extended cable curl found no regional difference.
- Load and effort — Research finds muscle growth is similar across a wide range of loads when sets finish close to failure. Taking every set to true failure adds only a small extra return, so many lifters finish most sets one to three reps short of it.
- Volume and frequency — Research links more weekly sets for a muscle to more growth, with diminishing returns, and multiple sets out-performed single sets in trials that included the elbow flexors. Spreading those sets over about two sessions a week is a common approach.
- Isolation and compound work — In a trial of untrained men, single-joint arm training and multi-joint upper-body training produced similar elbow-flexor size and strength gains. Curls are commonly used alongside rows and pull-ups to add direct biceps volume.
- Tempo — Studies show similar growth across rep durations of roughly 0.5–8 seconds when sets are hard. The two-second descent here is a coaching convention for control at the stretched bottom, not a research finding.
- Pairing — Many lifters pair this curl with one that loads the top of the range, such as a spider or concentration curl. There is no direct research comparing that pairing with either curl alone.
Swap it mid-workout
With VALDA Pro, FLEX offers alternatives like these when you swap an exercise mid-workout.
Log the incline dumbbell curl in VALDA, with these cues one tap away while you train and your history for it in one place.
General information about exercise technique, not medical advice. If you have an injury or a health condition, your healthcare provider is the right person to ask.