For male bodybuilders, changing the knee bend doesn't really affect a key thigh muscle's stiffness if the hip stays in the same position — but changing the hip position does seem to matter more.

40

Pro

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Against

Evidence from Studies

Supporting (1)

40

Community contributions welcome

40

Effects of knee and hip flexion angle on region-specific and longitudinal compartmental muscle stiffness of the rectus femoris using shear wave elastography in male bodybuilders

Cross-Sectional Study

Human

2025 Oct

The study found that changing the hip position affects the rectus femoris muscle more than changing the knee angle, especially when the hip is more extended, which supports the idea that hip position matters more than knee angle for this muscle's stiffness.

Contradicting (0)

0

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No contradicting evidence found

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Source Study

Effects of knee and hip flexion angle on region-specific and longitudinal compartmental muscle stiffness of the rectus femoris using shear wave elastography in male bodybuilders

Score: 40

DOI: 10.1007/s00421-025-05807-0

Similar Assertions

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48

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