Injury? Injury? I thought it is a disciplined sport LOL
I think he would love the fighting part of it
Well its a contact sport. Accidents can and do happen, and remember it involves punching and kicking. During training, you usually wont have any serious contact occurring. I dont think they would allow young children to go all out actually. In competition, everyone has to wear gloves, gumguards and body armour, so the risk of injury is reduced. Again, I'd be surprised if thats even an option for such a young age (entering fighting competitions).
Anyway, point being, its a contact sport. I never had any injuries at all in 3 years, but I did accidently cause one (which I felt very guilty about). And that one actually occurred during the warm up, anyway...
What is the difference between the respective disciplines?
Off the top of my head....
Karate means empty hand. There are many, many different styles of karate, each influenced by its founder and subsequent members. Some styles of karate emphasize different things, such as kata,others emphasize combat, others strike a balance. Some styles go for rigid forms and stances, others use more free flow techniques that feel more natural.
The style I did was one of the more rigid ones (Shukokai) with a balance between combat and kata. Kata are demonstrations basically.
Some of the more interesting and enjoyable sessions were when we had a jujitsu trainer come in for a lesson. Our sensei (Don Gold) was a famous martial arts and self defense instructor, so he always had interesting things to say about self defense and getting out of situations.
Aikido is a softer style and doesnt really involve any or many strikes. Its all about using an opponents momentum and force against him - directing his energy away from you rather than striking back. Throws, grapples etc. Breathing is very important to all martial arts, but I think its even more important for Aikido. They also teach the use of the sword (although more than likely you will only get to handle wooden ones).
Dont know much about Kung Fu other than its Chinese in origin whereas Karate and Aikido are Japanese in origin.