No matter how you turn your hand, the muscle on the outside of your forearm gets less stiff the more you bend your elbow.

34

Pro

0

Against

Evidence from Studies

Supporting (1)

34

Community contributions welcome

34

Forearm rotation and elbow angle differentially modulate biceps brachii and brachioradialis muscle stiffness and EMG activity during low-load isometric contractions: a cross-sectional study in healthy individuals

Cross-Sectional Study

Human

2025 Jul 2

The study found that as you bend your elbow more from 30° to 120°, the brachioradialis muscle gets looser — no matter how your hand is turned. This means the angle of your elbow is the main thing affecting how stiff the muscle is.

Contradicting (0)

0

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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.

Source Study

Forearm rotation and elbow angle differentially modulate biceps brachii and brachioradialis muscle stiffness and EMG activity during low-load isometric contractions: a cross-sectional study in healthy individuals

Score: 34

DOI: 10.1186/s13102-025-01226-y

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