Muscle fiber types may be termed glycolytic or oxidative in reference to

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Muscle fiber types can be classified as glycolytic or oxidative based on their predominant metabolic processes. Glycolytic fibers rely mainly on anaerobic metabolism using glycogen as a fuel source and produce energy quickly but fatigue rapidly. Oxidative fibers rely mainly on aerobic metabolism using oxygen and fatty acids as fuel sources, and produce energy more slowly but can sustain activity for a longer duration. The amount of myoglobin, speed of contraction, and myosin heavy chain isoforms used can vary within each fiber type but are not used as the primary basis for classification.

Muscle Fiber Types May Be Termed Glycolytic or Oxidative in Reference