No, it isn’t required that you have a certification to train. However, If you are going to teach a class then I do think you SHOULD have a certification for training as well as a good knowledge of cueing techniiques. It will help when modifying movements for specific individuals (which will happen if your teaching these types of movements to a variety of differently structured people.) If you are to train the sport then I highly recommend a background in empty handed combat, sports conditioning, and a working knowledge of the rules and regulations of the sports. Thai, Western, and Savate kickboxing all have their own set of rules.