Question

question 22
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which of the following types of muscle fibers is the least fatigue resistant?
fast glycolytic fiber
type i fiber
fast oxidative fiber
slow oxidative fiber
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Explanation:

Fast Glycolytic Fibers rely on anaerobic metabolism (glycolysis) for energy production. Glycolysis produces energy quickly but also generates lactic acid, which causes fatigue. In contrast, Type I (Slow Oxidative) Fibers use aerobic metabolism (oxidative phosphorylation) which is more efficient and less fatiguing. Fast Oxidative Fibers and Slow Oxidative Fibers have better oxygen - using capabilities (aerobic pathways) compared to Fast Glycolytic Fibers. Aerobic pathways can produce energy more sustainably without the rapid build - up of fatiguing by - products like lactic acid.

Answer:

Fast Glycolytic Fiber