So, in some episodes, I think especially from TOS and TNG, we see close combat training. Do we have any official info about which style they are learning exactly in Starfleet? Is it some martial arts style that we know today, like for example Karate, Ju Jutsu, MMA or whatever, or might it also be something totally different? Yet some of the movements sometimes shown during this training sequences remind me strongly of Karate actually. I'm just interested in that topic because I had trained martial arts myself some years ago and now I've restarted with that. And speaking of which: Does everyone who is in Starfleet undergo at least a basic training in close combat? It seems so, because we have episodes where even doctor characters like Beverly Crusher, McCoy or Bashir showed some fighting skills.
Fa Que! It's a Scottish style. Mostly just head-butting and kicking people when they're on the ground.
The style Tasha Yar apparently learned is to hit her combadge and tell the bridge every time something happens, while standing there staring like a dope.
^also, they must have special classes on how to perform those dramatic body rolls to get from one spot with cover to another when under enemy fire, or when under those descending blast doors at the last possible instant.
Professional Wrestling. It got recognized for how functional and effective it was around the year 2110,
Crazy Captain Ron Tracey was well trained in Kirk Fu, especially the karate-chop! Incredible focus of power!
The back-of-the-neck knockout chop is so ubiquitous to '60s shows (including ones set in World War II, when any fighting move resembling Eastern martial arts should have been very rare knowledge among Westerners) that I've come to categorize it as part of a broader style called TV Fu.