It is an interesting question though, would he be even faster if he weighed less from having smaller shoulders and biceps? Or are those muscles contributing to his speed.
They are definitely contributing to his speed. At that level, people are shaped exactly how they need to be, and if you watch him run, there’s a whole lot of arm motion. AFAIK it’s basically the legs getting leverage against the arm’s opposing swing.
It is an interesting question though, would he be even faster if he weighed less from having smaller shoulders and biceps? Or are those muscles contributing to his speed.
They are definitely contributing to his speed. At that level, people are shaped exactly how they need to be, and if you watch him run, there’s a whole lot of arm motion. AFAIK it’s basically the legs getting leverage against the arm’s opposing swing.