Several general performance protocols for running a middle-distance event were compared. A treadmill (1,400 m; 4 min) run was evaluated at a fast/slow, slow/fast, and steady pace speed distribution. The fast/slow protocol resulted in a rapid and sustained increase in oxygen uptake, less lactate accumulation, and a lower rating of perceived exertion during the final 2 min of the 4 min run. Implication: Fast/slow pacing is superior to the other protocols. This is possibly due to the match of effort demanded with progressively waning physiological power.
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