Does arm position during biceps curls affect muscle activation?

Biceps Curl Form1 min readUpdated May 30, 2026

What the Evidence Shows

We analyzed the available evidence on arm position during biceps curls and found that bending the arms during the upward motion appears to increase electrical activity in the biceps muscle compared to keeping the arms straight. This was observed in measurements taken from trained bodybuilders using...

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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