Effect of competitive distance on energy expenditure during simulated competition

摘要: Concepts of how athletes should expend their aerobic and anaerobic energetic reserves are generally based on results tests where an "all out" strategy is imposed on/required from the athlete. We sought to determine spontaneously when only instruction was finish event in minimal time, as competition. Well trained, task habituated, road cyclists (N = 14) completed randomly ordered laboratory time trials 500 m, 1000 1500 m 3000 a windload braked cycle ergometer. The pattern energy use calculated total work accomplished V.O (2) during trials. events were 40.3 +/- 0.6 s, 87.4 4.1 133.8 6.6 s 296.0 7.2 s. peak terminal 200 all similar (2.72 0.22, 3.01 0.34, 3.23 0.44 3.12 0.13 l x min (-1)). In events, initial power output high, decreased more or less constant value over remainder event. However, subjects seemed reserve some ability anaerobically for acceleration which contrary predictions starting strategy. Although increased with distance (23.14 4.24, 34.14 6.37, 43.54 6.12 78.22 8.28 kJ), attributable sources not significantly different between rides (17.29 3.82, 18.68 8.51, 20.60 6.99 23.28 9.04 kJ). consistent concept that monitor resources regulate manner designed optimize performance.