Bioenergetics_ Bonus-s1-low

ATP and Phosphocreatine During Sprinting

• ATP and Its Function

  • ATP (Adenosine triphosphate) is the primary energy carrier in cells.

  • During high-intensity exercise, there is an immediate decrease in ATP levels, but phosphocreatine (PCR) helps to maintain ATP levels.

  • ATP levels never drop to 0%, whereas PCR can become depleted within approximately 8-9 seconds of intense exercise.

Substrate Utilization During Exercise

• Energy Sources with Increasing Exercise Intensity