Metf Chapter 3 [top] (2026)

This review is structured to highlight the core concepts, formulas, and distinctions necessary for exams or practical application.

B. Cardiorespiratory Fitness Metrics

• VO2 Max: The gold standard for aerobic capacity.
  1. Catabolic pathways: These pathways involve the breakdown of complex molecules into simpler ones, releasing energy in the process. Examples include glycolysis, the citric acid cycle, and fatty acid oxidation.
  2. Anabolic pathways: These pathways involve the synthesis of complex molecules from simpler ones, requiring energy in the process. Examples include gluconeogenesis, glycogen synthesis, and protein synthesis.
  1. Enzyme regulation: Enzymes are the catalysts of metabolic reactions. Their activity can be regulated by various mechanisms, such as allosteric control, feedback inhibition, and covalent modification.
  2. Hormonal regulation: Hormones, such as insulin and glucagon, play a critical role in regulating metabolism. They help to coordinate the activities of different cells and tissues to maintain energy homeostasis.
  3. Allosteric control: Allosteric control involves the binding of molecules to specific sites on enzymes, which can either activate or inhibit their activity.

  Molecular Mechanisms