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[Model of regulating blood glucose level during physical load]
Biofizika
|July 1, 1982
Summary
This study introduces a mathematical model for blood glucose and lactate dynamics during exercise. The model explains why trained individuals show smaller blood sugar changes, incorporating liver and muscle metabolism.
Area of Science:
- Physiology
- Biophysics
- Mathematical Biology
Context:
- Physical exertion significantly impacts metabolic processes.
- Understanding blood glucose and lactate dynamics is crucial for exercise physiology.
- The Cori cycle and glycogen metabolism are key regulatory pathways.
Purpose:
- To develop a mathematical model simulating blood glucose and lactate dynamics under physical load.
- To incorporate the effects of pH changes on gluconeogenesis.
- To explain metabolic differences observed in trained individuals.
Summary:
- A mathematical model was developed to study blood glucose and lactate dynamics during physical activity.
- The model integrates liver and skeletal muscle glycogen metabolism and the Cori cycle.
- It accounts for the activation and pH-mediated inhibition of liver gluconeogenesis (GNG).
- Simulations demonstrate system responses to varying physical loads, explaining reduced glycemia changes in trained subjects.
Impact:
- Provides a computational tool for analyzing metabolic responses to exercise.
- Enhances understanding of glucose homeostasis during physical stress.
- Offers insights into physiological adaptations in trained individuals.