Answer:
Slow-twitch muscles are able to use oxygen more efficiently than fast-twitch muscles.
Explanation:
Hope it helps! :P
Think it's 2 3 4 but I don't know what myofilbrils are
<span>b. It is an important source of fuel for sprints and bouts of high-intensity exercise.</span>
1. Control group
2. Placebo
3.control group
4. Double-blind
5. Post-marketing