One of the criticisms against the studies comparing high and low load resistance training is that they were using untrained subjects, making their findings moot for well-trained athletes.
Well, I did find this one small study of well-trained men (
Schoenfeld et al 2015), and it reported changes in muscle endurance. The low-load group's endurance increased by 16.6%, while the high-load group's endurance
decreased by 1.2%.
These results are similar to the ones found with untrained subjects.