Question

in resistance training, high rates of atp hydrolysis and cross-bridge formation occur in which fibers?

a.) slow oxidative fiber
b.) fast oxidative fiber
c.) fast glycolytic fiber
d.) type 2a fiber

Explanation:

Analyze resistance training demands

Resistance training involves short-duration, high-intensity muscle contractions requiring rapid force generation.

Compare muscle fiber characteristics

• Slow Oxidative (Type I) fibers have low ATP hydrolysis rates and are suited for endurance.
• Fast Oxidative (Type IIa / Type 2A) fibers have intermediate ATP hydrolysis rates.
• Fast Glycolytic (Type IIb/IIx) fibers have the highest rates of ATP hydrolysis and cross-bridge formation, making them the primary fibers recruited for high-intensity resistance training.

Answer:

• a.) Slow Oxidative Fiber
• b.) Fast Oxidative Fiber
• c.) Fast Glycolytic Fiber (Correct answer)
• d.) Type 2A Fiber