University of Maine Jun 8 2026 University of Maine researchers have published new findings about how muscles form, why certain muscle diseases develop and why symptoms may not appear until years after muscle degeneration begins. The study, published in Nature Communications, focuses on a protein called Mylpf that is essential for the development of fast-twitch muscle fibers, which propel rapid, powerful movements like sprinting and lifting heavy weights. When Mylpf does not form correctly,