The problem here is that medicine is both science and an art. Diagnosing patients is often inaccurate. We all know this. Sometimes we go get a second opinion. Occasionally they don't get it right. What we do assume is that the doctors are properly trained and are competent. Even here we often have doubts when we present to doctors trained outside the country we reside in.
In Australia fitness professionals are regulated. There are minimum requirements and instructors have to take extra courses to remain registered. At the moment there are no regulations for gym owners. However, anyone who instructs others in a gym or fitness facility must be properly trained. In the past when these regulations started they had a grandparenting scheme where long time gym instructors could get accredited. Now everyone has to take courses.
Has the level of instruction improved in recent years because we have these rules? Perhaps. I prefer to hire people who have done bodybuilding over those who merely took courses.
Someone in the government formulates rules and often those giving courses for instructors get involved re making the rules. I honestly don't think most courses for instructors are long enough or thorough enough.
So, if a personal trainer harms a client via sexual harassment or physical injury, is there license removed? What happens to them?
If there is no governing board to revokes licenses/certifications due to unethical behavior or misconduct, then who is regulating these trainers? Are they allowed to continue training and potentially hurting other clients? As stated, in medicine, if you display unethical behavior, your license may be removed (depending on what you did) and you can't practice medicine any more. Is this the same for personal trainers in Australia? If not, should it be? Or should we adhere to the idea of "buyer beware" when it comes to choose a personal trainer? Or should there be a governing body who decides who is fit to be a personal trainer and who isn't, based on past behavior?