A separate investigation of swimming endurance has led to a family of expressions relating maximal human locomotor activity to time and/or distance having such wide application to medicine, physiology, and sports as to merit independent publication. Specifically, variations of a single racing equation with one variable parameter suffice to predict record times, speeds, energy, power, and endurance accurately for cycling, running, and swimming, provided only that performance be categorized as steady-state, aerobic effort. [S0148-0731(00)01405-9]

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