Athletes getting better, faster and stronger

This week I watched a video about "Are athletes really getting faster,better, stronger" on Ted.com. This video was made by David epstein and he was discussing about the major upgrade in sports when it comes to the athletes. Jesse owens who was an american runner in the year 1936 held a record of 10.2 seconds and if he were to be compared with the current olympic gold medalist Usain Bolt which his record is 9.77 seconds, he would finish 14 feet back. Besides that basketball players have became even taller in size, in other words there are 10 men in the NBA that are at least 7 feet tall which makes it even more easier for them to score during any match. Female gymnast's size requirements have relatively became smaller which is from 5'3 to 4'9.

These is what i've learnt from this video today.