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Bicep Curl

Draftstrength90%beginner⬤ moderate evidence
View FHIR resourceFHIR R4 ActivityDefinition — the interoperable form of this exercise

Positions & Range of Motion

Start
standing tall with a quiet trunk, upper arms pinned to the ribs, holding a dumbbell or band with the elbow in full extension at the side
End
forearm curled up to full elbow flexion with the weight near the front of the shoulder, elbow still pinned to the ribs
Range of Motion
elbow flexion from ~0° (full extension) to ~140° (full flexion), isolated with the upper arm stationary

How to Perform

Standing or seated elbow flexion with dumbbell or resistance band. The forearm moves from extension to full flexion. Fundamental upper extremity strengthening.

Watch on YouTube↗

Opens a YouTube search for “Bicep Curl”

Equipment:dumbbells
Starting position: standing

Coaching Cues

  1. 1

    Quiet trunk, pinned elbows — biceps and brachialis flex the elbow

    (verbal)
  2. 2

    Curl the dumbbell toward the front of the shoulder

    (verbal)
  3. 3

    Lower the weight slowly over three seconds

    (verbal)
  4. 4

    Elbows pinned to the ribs like hinges

    (visual)

Evidence-Based Dosing & EMG Data

Recommended Dosing

3×10-12 reps; supinated grip for biceps emphasis

EMG Activation Data

20–50% MVIC biceps brachii in supinated grip; 50–95% peak RMS during concentric dumbbell curl [Oliveira 2009, Borms 2017].

Muscles Involved (6)

Primary Movers

Biceps Brachii
Brachialis

Secondary Movers

Brachioradialis— Significant contributor — becomes co-primary with neutral grip [Marcolin 2018]

Lengthened / Stretched

Triceps Brachii— AUDIT: Elbow flexion lengthens the elbow extensor triceps brachii (genuine antagonist; triceps not a working muscle in the curl).
Anconeus— AUDIT: Elbow flexion lengthens the accessory elbow extensor anconeus.

Synergists & Assistors

SupinatorSynergist— Maintains supination — not an elbow flexor

Easier Variations ↓

1

Gravity-Eliminated Curl

Side-lying with arm supported, curl with no gravity resistance.

Harder Variations ↑

1

Hammer Curl

Perform with neutral grip (thumbs up). Increases brachioradialis involvement.

2

Eccentric-Focused Curl

Take 5 seconds to lower the weight. Use the other hand to assist the concentric phase if needed.

Target Movements (2)

Elbow FlexionHumeroulnar Joint
Forearm SupinationProximal Radioulnar Joint

Why This Exercise Matters

Everyday activities this exercise helps you do — essential means it directly trains the capacity the task needs:

Gripping a Cup

Goals This Helps With

Rehab, performance, prevention, and mobility goals this exercise supports — essential means it's a cornerstone:

Improve Your Pull-Upperformance

Research Notes

Evidence upgraded from limited → moderate. Single-joint bicep curl produces significantly greater elbow-flexor hypertrophy than multi-joint alternatives (11.06% vs. 5.16% over 8 weeks at 3–6 sets × 8–12 reps to failure, 2×/wk) [Mannarino 2021, PMID 31268995]. EMG 20–50% MVIC in supination; dumbbell curl 50–95% peak RMS [Oliveira 2009; Borms 2017]. Incline and preacher variations produce regional hypertrophy differences — incline favors proximal growth [Kassiano 2025].

Evidence Sources (4)