Usain Bolt is currently the fastest man in the world. He set new world records for the 100 and 200 metres at the World Championships in Berlin a few weeks ago. For the 100 m event, his world record is 9.58 sec. Nobody expect that the previous world record, 9.69 sec in 2008, can ever be smashed.
Is it because of his towering height which is at 6ft 5ins (1.96m) which is much taller than other Olympic sprinters who are normally between 5ft 9ins (1.75m) and 6ft 3ins (1.9m). With such a height, he has that longer stride than others. Usually, for athletes any taller it had been thought that any additional benefit from a longer stride would be outweighed by their greater bulk.
Usually, people with those height never interested in this kind of athletics sport, and most of them prefer to devote themselves to more lucrative sports such as basketball or American football. Thus, after the success of Usain Bolts, I think more tall powerful athletes might now be inspired by his example and be drawn to sprint events.
What about future records, can any human being run faster than the current record. In order to do that, the person must sort of flying instead of running to achieve those kind of feat.
Actually, that was what people have been thinking before that no human being can run faster than 9.6 sec until Usain Bolts beat the record. So, in the future, I believe that a new world record will be achieved due to the more sophisticated training equipments available to the athletes. Read more about this HERE.