Muay Thai became popular in the sixteenth century, but became widespread internationally only in the twentieth century, when many Thai fighters won several victories over representatives of other martial arts.
How to improve leg speed. Once you have built a good aerobic base and are able to get around your chosen distance, the next target is likely to be to run it faster. To do this you need to increase the speed at which you can turn your legs over. You will make these improvements if you introduce some speed work into your training sessions. Below are sessions that you could include in your programme. 1. Fartlek.
Work your way up to 5 sets of 50 reps of each exercise. The exercises I suggest training this way are the squat and leg curl. You should also do one legged pedaling to improve strength-endurance of the hip flexors. Start out trying to make it one minute with each leg and build up to two minutes. Do at least three sets of one legged pedaling per session.