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Testo: <blockquote data-quote="saurox" data-source="post: 5391693" data-attributes="member: 16681">Standard protocol for fitting the critical power model: [Adapted from Vanhatalo et al. (2007)]  1. Have the athlete perform a series of maximal constant-effort trials of varying durations between 2 and 15 min. At least two such trials must be performed but 4-6 trials are routinely performed in published studies.  2. For bicycle ergometry that enables constant-power trials to be executed, exhaustion is defined as when the cadence can no longer be maintained.  3. For field-based studies, time trials can be performed instead. It is important that the time trials be evenly paced to approximate the constant power requirement. The chosen distances should be coverable by the athlete in ~2 to 15 min.  4. Standardize the warm-up and rest periods if the trials are performed on the same day.  5. Record the duration and average power or pace for each trial.  6. Use linear regression to estimate the values of CP and W'. Various tools in Excel are available to perform linear regression.</blockquote>

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