Question

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be ________.

1. because they are slower to respond, slow oxidative fibers must be stimulated first in order to contract simultaneously with the faster fibers
2. recruiting slow oxidative fibers early helps to tire them out first so that they won't interfere with the more powerful contractions of fast glycolytic fibers
3. to allow for fine control with delicate contractile force with a small stimulus
4. There is little to no benefit from recruiting slow oxidative fibers first, and therefore it is in fact fast glycolytic fibers that will be recruited first.

Answer 1

Recruiting slow oxidative fibers first allows for delicate control and extended activity due to their fatigue-resistant nature, which is beneficial in activities requiring endurance and consistency.

Step-by-step explanation:

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be to allow for fine control with delicate contractile force with a small stimulus. Slow oxidative fibers contract relatively slowly using aerobic respiration to produce ATP, making them more resistant to fatigue and suitable for sustaining contractions over long periods. This characteristic is utilized in endurance activities requiring consistent and prolonged muscle activity and less force. On the other hand, fast glycolytic fibers contract quickly using anaerobic glycolysis but fatigue rapidly, making them more appropriate for short, powerful bursts of activity, such as sprinting or weightlifting.