The theoretical power threshold you can sustain for a very long duration without fatigue from anaerobic contribution.
Critical Power (CP) represents the asymptote of your power-duration curve. It is the highest intensity you can sustain in a physiological steady state. While conceptually similar to FTP, CP is mathematically derived from your best efforts across different durations.
CP is often considered a more scientifically robust marker than FTP. It defines the boundary between heavy and severe exercise domains.
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