Interesting study, a couple of years old so I’m probably late to the party, but I was curious if it had impacted BBM’s programming in any way.
It finds that the heavier the bench press the less the pecs contribute relative to the triceps/shoulders.
Yep, it has been known for a while that the pecs reach maximum excitation in the bench press at relatively low loads. Extending that finding to outcomes that we care about such as hypertrophy is a bit of a logical leap, but perhaps relevant in making decisions about loading the bench press when prioritizing hypertrophy compared to improved bench press performance. In that case, you’d likely choose sets of 8-15 @ RPE 7-8 without a need to go any heavier (from a pec hypertrophy during barbell bench press perspective).
However, I don’t think many individuals familiar with the research would advocate for heavy sets of 3-6 on the bench press for maximum pec hypertrophy, though some exposure to these loading and rep schemes is necessary for strength development.
tl;dr- didn’t really change what we do and likely won’t change what people who ignore science recommend, unfortunately.