How do you quantify the speed. It looks to me like the result speed is .5 seconds. Is that correct?
I know it's been a while, but if you look at Guinness' record for Most punches in a Minute you get the answer to your question as of 2017.
A new record! 187, that's a lot.
The fact is, he earned the title and some comments don't have any titles. Nice endurance David.
When I break Ardito's record with Guinness, I will post the results on youtube. He did not post any video record evidence anywhere. I know, I looked in his home country.