When people do flat bench press, the lower part of their chest muscle grows more than the upper part - and this is the opposite of what happens when they do incline bench press.

26

Pro

0

Against

Evidence from Studies

Supporting (1)

26

Community contributions welcome

26

Non-uniform excitation of pectoralis major induced by changes in bench press inclination leads to uneven variations in the cross-sectional area measured by panoramic ultrasonography

Cross-Sectional Study

Human

2022 Dec

The study tested flat bench press and measured how much the two parts of the chest muscle (sternocostal and clavicular heads) grew right after exercise. Just like the claim says, the sternocostal part got bigger than the clavicular part after flat bench press, and this was the opposite of what happened with inclined bench press.

Contradicting (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

Non-uniform excitation of pectoralis major induced by changes in bench press inclination leads to uneven variations in the cross-sectional area measured by panoramic ultrasonography

Score: 26

DOI: 10.1016/j.jelekin.2022.102722

Similar Assertions

When you do bench press on an incline, the upper part of your chest works harder. But when you do flat bench press, the middle-lower part of your chest works harder instead. Scientists measured this using muscle activity recordings.

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When people do bench press on an inclined bench, the upper part of their chest muscle swells more than the lower part, showing different responses within the same muscle.

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When you change the angle of the bench press, it might make the different parts of your chest muscle work in uneven ways, potentially causing one part to activate differently than the other.

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