There is a generally linear dose-response relationship between training volume (number of sets) and muscle hypertrophy, up to approximately 10 sets per muscle group per week.

noli's read

This advice is based on a meta-regression by Schoenfeld et al. (2017), a robust analysis that aggregates several randomized controlled trials (RCTs). The idea that higher volume generally leads to better muscle growth is widely supported by current scientific literature. However, it is important to note that the concept of 'diminishing returns' does not mean that exceeding 10 sets is useless, but that the marginal gain per additional set may decrease. Research also suggests great individual variability in recovery capacity, which makes it difficult to establish a precise universal ceiling. The creator presents here a faithful interpretation of the data available at the time, avoiding generalizing beyond what the evidence allows. It is therefore very close to a nuanced scientific consensus on training optimization.

the sources

No named source held this one up — that absence is part of the verdict.