2,3-diphosphoglycerate during exercise

Area of Science:

• Sports Medicine
• Physiology
• Biochemistry

Background:

• Erythrocyte 2,3-diphosphoglycerate (2,3-DPG) plays a crucial role in oxygen transport.
• The impact of intense physical exercise on 2,3-DPG levels in athletes is of significant interest.

Purpose of the Study:

• To investigate the effect of a single bout of intense exercise on 2,3-DPG levels.
• To assess the long-term impact of six months of intense training on 2,3-DPG and related physiological parameters in trained canoeists.

Main Methods:

• Eight trained speed canoeists (aged 15-25) underwent a 4-minute paddling ergometer test.
• Cardiorespiratory parameters (VO2, HR, etc.), blood lactate, haematocrit, and 2,3-DPG were measured.
• Measurements were taken at rest and after the exercise bout, with a follow-up after 6 months of training.

Main Results:

• A statistically significant increase in resting erythrocyte 2,3-DPG and haematocrit was observed.
• Following intense exercise, resting 2,3-DPG and haematocrit levels were significantly elevated.
• After six months of intense training, 2,3-DPG levels showed a significant increase, along with other physiological parameters.

Conclusions:

• Intense physical exercise, both acute and chronic, leads to elevated erythrocyte 2,3-DPG levels in trained athletes.
• These findings suggest an adaptation of oxygen-carrying capacity in response to rigorous training regimens.