As she rounded the final bend in the 400m final Cathy Freeman sensed that this was her moment.
Out of the blue in 1997, Brownlie received a call from a man called Eddy Harber, a Brit who was working as a functional apparel designer for Nike, the sportswear company that helped ignite the jogging craze in the 1970s.
When an object moves, the surrounding gas molecules in the airflow are disturbed and pass around that object forming what is known as a boundary layer.Take the case of a runner. As she runs, high air pressure begins to form in front and low air pressure behind. That is achieved by a process called"tripping the flow", deliberately switching an orderly air flow into a turbulent one at a point that delays the boundary layer separation. This reduces the pressure differential and the size of the low pressure wake area.
"I still remember — it was [test] number 23 — and suddenly watching the dials, the drag dropped in half, and I went, 'Ah-ha! That's the one!'"After testing some 500 combinations, it came down to these combinations, according to Eddie Harber. The lower leg, moving at 71.2 km/h, was made using a polyester power mesh, a lightweight stretch woven fabric that is breathable and used for its compression abilities.
By the time the Australian team and Freeman came on board in January 2000, the science had been settled and what remained to be done was to customise the outfit to suit Freeman's small frame. While the men's 400m has always been a part of the modern Olympics, it wasn't until 1964 when a women's event over that distance was added — and won in that year by Australian Betty Cuthbert.While speed is important, endurance is also key — and for good reason, it has sometimes been called the"killer event".
Muscle activity, such as physical exercise, relies on a source of energy called adenosine triphosphate . Freeman is still running on the energy supplied by the anaerobic glycolysis system. But it's around this point that lactic acid accumulated as a by-product of this process, begins causing muscle fatigue.
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