Response of erythrocytic 2,3-diphosphoglycerate to strenuous exercise

  • J. M. Ramsey
  • S. William PipolyJr.
Article

Summary

Since increases of erythrocytic 2,3-diphosphoglycerate (2,3-DPG) have been shown to enhance the release of oxygen from hemoglobin, experiments were designed to evaluate the response of 2,3-DPG to two different workloads in 13 fasted human subjects. No significant mean change in 2,3-DPG was found following 16 min of strenuous exercise on a bicycle ergometer, but when the subjects were subjected later to a greater workload for 20 min, there was a significant mean decrease in 2,3-DPG despite much individual variation. In addition, there was a significant positive correlation of 2,3-DPG reduction with increases in postexercise lactate, and a significant inverse correlation of oxygen consumption during exercise with postexercise lactate. The data suggest that the 2,3-DPG mechanism may not be compensating in exercise when the workload requires a preponderance of anaerobic metabolism promoting lactacidaemia.

Key words

2,3-DPG Exercise Hypoxia 

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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • J. M. Ramsey
    • 1
  • S. William PipolyJr.
    • 1
  1. 1.Department of BiologyUniversity of DaytonDaytonUSA

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