I've been practicing Ju Jitsu for 18 years on and off, and would exclude anybody who practices kick boxing on principle
(Not as bad as Tae Kwon Do mind you
).
Seriously, and martial arts politics aside, what does it offer the employer? If you are a dan grade instructor, your teaching or organising experience may be worth mentioning - some phrase like "senior instructor at local martial arts club" (then be prepared to explain how you'll fit that around your flight scheduling). If you simply participate, then some vague allusion to "regular sports exercise" is probably enough, anything else is probably irrelevant. Avoid irrelevant detail.
G