Running mechanics, not metabolism, are the key to performance for elite sprinters

Contrary to traditional scientific understanding, sprint and endurance exercise differ fundamentally in the relationship between exercise mechanics, metabolism and performance, according to new research. Prevailing theory holds that the availability of metabolic energy limits the performance of sprinters and endurance runners alike. But new findings indicate that sprinting performance is limited by musculoskeletal forces and the rapidity with which those forces are impaired by fatigue.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/fitness/~3/hrbvV4gyE90/120801132723.htm

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