Does a vegetarian diet affect martial arts training?

Trish Bare Grounds, author of the Bare Essentials Guide to Martial Arts Injury Care and Prevention says that a vegetarian diet alone shouldn't affect your training but there are special steps you need to take to ensure that your muscles are getting the right nutrition:

Simply being vegetarian does not effect your stamina and muscle tissue repair, but too low of a protein intake will. Protein is the building block for your muscle which is damaged and broken down every time you work out, so therefore is a vital part of your daily food intake.

There are many very healthy alternatives if you do not wish to eat meat, fish, fowl, dairy products or eggs. Beans, nuts, tofu, and lentils to begin with have necessary protein from a non-animal source, but the addition of dairy products or even eggs would greatly increase your protein intake. Cheese, yogurt, ice cream, cottage cheese, milk, etc. are good sources of animal product, but not animal, alternatives to eating meat. If you are a vegetarian and a martial artists, I suggest you look at your diet and re-evaluate your protein intakes and adjust them as necessary.