Not that there aren't contradictory studies, but I don't see that here - this study focuses on muscles while the weekend study focused on all-cause mortality.

Not that there aren't contradictory studies, but I don't see that here - this study focuses on muscles while the weekend study focused on all-cause mortality. I.e., just exercising on the weekends may be enough to live longer, but spreading weight training out throughout the week is more effective for muscle growth than the equivalent sum of the training on the weekend only.