I'm sorry, but you might get answered if you rephrased your question, I can't rephrase it because I cave no idea what you mean by "composites".
Light weight and strong helmets, boots, protective clothing can now be used due to use of composite materials
When a sport becomes very popular it will/can be looked at by the Olympic council, some sports, like UFC are very popular, but will not be in the Olympics because of the violence and such....
Thanks to everyone who has not answered this. I need it on a test right now. D:
By time.