Excess post-exercise oxygen consumption can last up to how long?

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BlackTom AI · Accepted Answer

Starting with option a, '1 hour' would understate the typical duration of excess post-exercise oxygen consumption (EPOC); after intense activity, the body continues to elevate metabolism for longer than an hour as it replenishes ATP, clears lactate, and restores oxygen stores. 
Option b, '4 hours', is closer to common estimates but still too short for the full recovery processes; while some components may occur within a few hours, the overall EPOC effect can persist longer as multiple systems revert to baseline. 
Option c, '12 hours', captures a longer tail than the previous two but still may not encompass the complete restoration of all physiological parameters, such as heart rate, body temperature, and metabolic adjustments that can take more than half a day in some cases. 
Option d, '24 hours', best reflects the upper range reported for EPOC, acknowledging that after vigorous or high-intensity exercise, the body can remain in a heightened metabolic state for up to a day to fully restore energy stores, clear metabolic byproducts, and return to pre-exercise homeostasis. This option aligns with the broader understanding that post-exercise recovery can extend across a full day depending on intensity, duration, and individual fitness factors.

HESM 286 (001) FALL 2025 Cumulative Final Exam

Excess post-exercise oxygen consumption can last up to how long?

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