It depends on what age you are talking about. If it is middle school or youth Lacrosse you should be fine with little to no experience. But if you are looking at college lacrosse, you definitely need prior experience.
An assumption based on prior experience is officially known as inductive reasoning.
Prior experience means that you have past experience in the job before, also known as you know how the job works and you know how to do it. Ex. You are applying for a cashier job, and you have had prior experience because you have worked as a cashier before in another store, so you know how things work
If you have no prior experience at training or breaking "crazy" horses, you should not be dealing with it as you are risking your life.
In college lacrosse, Johns Hopkins has won 44 national championships -- 35 of these were earned prior to the first NCAA Division I tournament in 1971.
Any work experience with companies, institute or organisation. Experience good or bad
Relevant experience in relation to employment is how much prior experience one has in that field. For an example, if one was trying to obtain a position in an accounting firm, relevant experience would be any prior accounting work they did with another employer.