Biology · Muscular System
A sprinter with mixed muscle fiber types aims to optimize performance. Which of the following properties of Type IIa fibers provide a competitive edge over pure Type IIx fibers in tactical short-distance races? 1. Higher oxidative capacity for sustained speed 2. Faster ATP hydrolysis rates than Type I fibers for rapid acceleration 3. Greater fatigue resistance via higher mitochondrial density 4. Intermediate contraction velocity suitable for maintaining control on curved tracks
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12, 3, and 4 only
- 21, 3, and 4 only
- 31, 2, and 4 only
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1, 2, 3, and 4
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