Dear Hadwan Alwan,
I never worked with Muaythai / Thaiboxing athletes but I think that in this kind of discipline, as boxing, the explosive strength expressed in very rapid movements has the most important role.
For the development of the explosive strength the boxers must use specific strength-speed exercises.
The exercises like Snatch, Clean and Jerk, Squat, Deadlift and Push Press could be used at the beginning of the preparation period (before the specific strength-speed exercises) for the preliminary strengthening of athlete neuro-muscular apparatus.
This exercises are very important because they represent mainly the training of CNS.
In these exercises the external opposition represent the most important stimulus for neuro-muscular apparatus perfectioning, the level should be the maximal but the value of maximal external opposition in kg (or maximal strength express in the exercise) assume less importance. I can’t say what level of RM could be enough for Muaythai / Thaiboxing athletes training. I only say that, in a general case, 165 pounds (85 kg) RM in Deadlifting means a very low level of neuro-muscular apparatus condition.
Yuri Verkhoshansky