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Metabolic States of the Body: The Postabsorptive State01:18

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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Assessing Energy Substrate Oxidation In Vitro with 14CO2 Trapping
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Prehabilitation: Do We Need Metabolic Flexibility?

Nicholas Tetlow1,2, John Whittle1,2

  • 1Human Physiology and Performance Laboratory (HPPL), Centre for Peri-operative Medicine, Division of Surgery and Interventional Science, Department of Targeted Intervention, University College London, London, UK.

Annals of Nutrition & Metabolism
|March 23, 2025
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Summary
This summary is machine-generated.

Metabolic flexibility, the ability to switch energy sources, is crucial for surgical recovery. Improving this adaptability through prehabilitation can reduce complications and enhance patient resilience.

Keywords:
Cardiopulmonary exercise testingMetabolic flexibilityPrehabilitationSubstrate oxidationSurgical stress

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Area of Science:

  • Metabolic regulation and physiological adaptation

Background:

  • Metabolic flexibility is key to perioperative resilience.
  • Metabolic inflexibility can lead to worse surgical outcomes, impaired immunity, and insulin resistance.

Purpose of the Study:

  • To explore the role of metabolic flexibility in the perioperative period.
  • To examine prehabilitation strategies for improving metabolic readiness for surgery.

Main Methods:

  • Review of implications of metabolic flexibility.
  • Discussion of cardiopulmonary exercise testing for assessment.
  • Examination of targeted exercise and nutritional interventions.

Main Results:

  • Metabolic flexibility influences perioperative outcomes.
  • Cardiopulmonary exercise testing assesses fuel adaptability.
  • Prehabilitation can enhance mitochondrial function and substrate oxidation.

Conclusions:

  • Prehabilitation strategies can improve metabolic flexibility and perioperative outcomes.
  • Targeted interventions can reduce complications and support immune resilience.
  • Further research is needed to identify and tailor interventions for vulnerable populations.