Analysis Version
v1
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quantitative
Analysis v1
Strong Support

Doing preacher curls might build more muscle in a specific lower part of your upper arm than incline curls do.

49
Pro
0
Against

Evidence from Studies

Supporting (3)

49

Community contributions welcome

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Distinct muscle growth and strength adaptations after preacher and incline biceps curls

Randomized Controlled Trial
Human
2025 May

The study found that preacher curls build more muscle at the bottom part of the upper arm compared to incline curls, which supports the idea that they work the lower part of a muscle called the brachiialis better.

49

Distinct muscle growth and strength adaptations after preacher and incline biceps curls

Randomized Controlled Trial
Human
2025 May

The study found that preacher curls build more muscle at the lower part of the upper arm compared to incline curls, which supports the idea that they work that area better.

47

Regional Hypertrophy: The Effect of Exercises at Long and Short Muscle Lengths in Recreationally Trained Women

Randomized Controlled Trial
Human
2023 Jul

The study found that preacher curls made the lower part of the arm muscle bigger, while incline curls didn’t. This supports the idea that preacher curls work that area better.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Similar Assertions

Doing bicep curls on an incline bench builds more muscle in the upper part of your biceps than preacher curls do.

49
47
82%

Whether you do preacher curls with a cable machine (harder when your arm is bent) or a barbell (harder when your arm is straight), your biceps grow about the same amount after 10 weeks of training.

47
0
81%

Doing bicep curls on an incline bench might build your biceps muscle better than doing preacher curls, especially in the middle part of your upper arm.

49
0
79%

For young women doing strength training twice a week, preacher curls might build more muscle in the lower part of the biceps than incline curls.

49
0
78%

Whether you use a cable machine or a barbell to do preacher curls for 10 weeks, your biceps will grow about the same amount — the exact way you apply resistance doesn’t matter much for muscle size.

47
0
77%

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