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Modeling the expenditure and reconstitution of work capacity above critical power

机译：对超过关键能力的工作能力的支出和重组进行建模

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Purpose: The critical power (CP) model includes two constants: the CP and the W′ [P = (W′/t) + CP]. The W′ is the finite work capacity available above CP. Power output above CP results in depletion of the W′ complete depletion of the W′ results in exhaustion. Monitoring the W′ may be valuable to athletes during training and competition. Our purpose was to develop a function describing the dynamic state of the W′ during intermittent exercise. Methods: After determination of V?O2max, CP, and W′, seven subjects completed four separate exercise tests on a cycle ergometer on different days. Each protocol comprised a set of intervals: 60 s at a severe power output, followed by 30-s recovery at a lower prescribed power output. The intervals were repeated until exhaustion. These data were entered into a continuous equation predicting balance of W′ remaining, assuming exponential reconstitution of the W′. The time constant was varied by an iterative process until the remaining modeled W′ = 0 at the point of exhaustion. Results: The time constants of W′ recharge were negatively correlated with the difference between sub-CP recovery power and CP. The relationship was best fit by an exponential (r = 0.77). The model-predicted W′ balance correlated with the temporal course of the rise in V?O2 (r = 0.82-0.96). The model accurately predicted exhaustion of the W′ in a competitive cyclist during a road race. Conclusions: We have developed a function to track the dynamic state of the W′ during intermittent exercise. This may have important implications for the planning and real-time monitoring of athletic performance.
机译：目的：临界功率（CP）模型包括两个常数：CP和W'[P =（W'/ t）+ CP]。 W'是CP之上可用的有限工作能力。 CP之上的功率输出导致W'耗尽，W'完全耗尽导致耗尽。监视W'对运动员在训练和比赛中可能很有价值。我们的目的是开发一种描述间歇运动期间W'的动态状态的函数。方法：在确定了V？O2max，CP和W'之后，七名受试者在不同的日期通过自行车测功机完成了四个单独的运动测试。每个协议包括一组间隔：在严重的功率输出下为60 s，在较低的规定功率输出下为30 s的恢复。重复该间隔直到精疲力尽。假设W'呈指数重构，将这些数据输入到一个连续方程中，以预测剩余W'的平衡。时间常数通过迭代过程进行更改，直到在耗尽时剩余的模型W'= 0为止。结果：W'充电的时间常数与亚CP恢复功率和CP之间的差异呈负相关。该关系最适合指数（r = 0.77）。模型预测的W'平衡与V2O2的上升的时间过程相关（r = 0.82-0.96）。该模型准确地预测了在公路比赛中竞技自行车手W'的消耗。结论：我们开发了一种功能，可以在间歇运动中跟踪W'的动态状态。这可能对运动成绩的计划和实时监控具有重要意义。

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