Thanks for that informative post.
Just a comment about Pankration, i can see why Boxing was considered more strenuous as it's striking only but I wonder though how close it really was because from what I read nut shots were allowed in Olympic Pankration and only biting and eye gouging banned (Spartans seem to have allowed these 2 also). I mean if you took a good nut shot I doubt you will be ready to go Box a little while later lol but then again may be all the decent Pankration guys knew how to defend themselves against nut shots, especially one's who wanted to Box after that event.
In the Olympic Games nut shots were allowed iirc, but looked down upon, in Spartan contests though, EVERYTHING was allowed hence that little phrase about "spartans biting like lions", which if done at the official games would result in disciplining by the referee.
In terms of Boxing I know the general rules of KO, submit or kill but I am wondering what the rules were about things like clinching and whether a guy could use some throws while in the clinch like under London prizefighting rules. Also were elbows banned?
Clinching was discouraged iirc, with the referees seperating boxers who held on, but a clinch followed by an immediate throw was ok, but fights were stood back up, ANY kind of wrestling was strictly forbidden.
I'll go check out a copy again from the library to fact check myself, but I'm pretty sure that was correct.
Also some other trivia
Headgear was around back then even, in the form of brass ear guards, also, training mits were around too, that looked much more similar to modern boxing gloves, but these soft mitts were only allowed in the palaestra, along with the ear guards. The Hard Thongs were what were used in the official contests(until the Romans added in the Cestus).
Forgot your question about elbows, only legal strikes were done with the thong covered fist.
EDIT: And Boxing was considered the most strenuous for another reason: The tremendous damage that could be done to one's face with the aid of the sharp tongs, as the Pankration was fought bare-handed, or with a lighter version of the thongs boxers used.