ACE and NASM both does a great job for the general population, but NASM puts a slight bit more emphasis on corrective exercise. However, any of the certifications you have mentioned will get your foot into the door.
Broadway theatre, commonly known as Broadway, refers to the theatrical performances presented in the 41 professional theatres with 500 or more seats located in the Theater District and Lincoln Center along Broadway, in Midtown Manhattan, New York City.
Theatres did not arrive in the Times Square area until the early 1900s, and the Broadway theatres did not consolidate there until a large number of theatres were built around the square in the 1920s and 1930s. Broadway's first long-run musical was a 50-performance hit called The Elves in 1857.