write:writes South African sports scientist Timothy David Noakes. The record speed for the mile for example was cut from 4:36 in 1865 to 3:43 in 1999. The one-hour cycling distance rec

writes South African sports scientist Timothy David Noakes. The record speed for the mile
for example
was cut from 4:36 in 1865 to 3:43 in 1999. The one-hour cycling distance record increased from 26 kilometers in 1876 to 49 kilometers in 2005. The 200-meter freestyle swimming record decreased from 2:31in 1908 to 1:43 in 2007. Technology and aerodynamics are a part of the story
but the rest of it has to do with training intensity
training methods
and sheer competitiveness and desire. It used to be that 67 kilometers per week was considered an aggressive level of training. Today’s serious Kenyan runners
Noakes points out
will cover 230 kilometers per week (at 6
000 feet in altitude).