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swimmingstartingblockOlympic swimmers don't just dive into the pool like the rest of us. They start on a block called, appropriately enough, a starting block. London will see the Olympic debut of a track-style starting block with an inclined surface and a lip at the back.

The blocks, first used in international competition at the Swimming World Cup in 2009, let swimmers push off from a crouch with the rear leg at a 90-degree angle, optimizing the power of their launch. The block also can detect false starts.

Why does that even matter to a physicist? Because it's all about acceleration.

swimming training 2012Unless appropriate paces and intensities of work are prescribed for individuals, some swimmers may under-work while others will overwork. The task is to prescribe optimal training activities which involve the correct mix of aerobic endurance, aerobic power, lactate tolerance, and sprint ability. Each of those forms requires different intensities, duration of repetitions, and rest intervals.

Sprint ability :

This is one's maximum velocity and is a function of muscle fiber type, level of creatine phosphate in the muscles, activity of creatine kinase in muscles, maximum muscle power, and neuromuscular recruitment patterns. A swimmer has to develop the skill of reaching maximum velocity as soon as possible in a race, to maintain maximum velocity for as long as possible, and develop the ability to call upon sprint ability in the middle and at the end of longer (>30 sec) races.

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