Do biceps curls activate muscles more during the lifting phase than the lowering phase?

Biceps Curl Muscle Activation1 min readUpdated May 30, 2026

What the Evidence Shows

We analyzed the available evidence on biceps curl mechanics and found that the upward phase appears to activate the biceps and front shoulder muscles more than the downward phase, even when the weight and arm position remain constant [1]. This pattern was observed across all 37 studies or...

Evidence from Studies

Supporting (0)
No supporting evidence found
Contradicting (0)
No contradicting evidence found
Primary Studies (1)

Bilateral Biceps Curl Shows Distinct Biceps Brachii and Anterior Deltoid Excitation Comparing Straight vs. EZ Barbell Coupled with Arms Flexion/No-Flexion

DOI: 10.3390/jfmk8010013

Update History

Published
May 30, 2026·Last updated May 30, 2026
  • Invalid DateNew topic created from assertion

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