The Claim

The clavicular head of the pectoralis major demonstrates significantly greater increases in cross-sectional area than the sternocostal head following a 45° inclined bench press exercise (P < 0.001), indicating differential acute muscle swelling responses between these muscle regions.

Source: 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

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
26score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

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.

See the scientific wording

Following 45° inclined bench press exercise, the clavicular head of pectoralis major shows significantly greater increases in cross-sectional area compared to the sternocostal head (P < 0.001), indicating differential acute muscle swelling responses

What the research says

1 study

  1. 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

    The study confirms that after doing incline bench press at 45 degrees, the upper chest muscle (clavicular head) swells more than the lower chest muscle (sternocostal head), exactly matching what the claim states with the same statistical significance (P < 0.001).

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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