Question

3. Select all of the following that must be maximized in order for John to lift the greatest weight his genetics allows:

A. Quantity of lactate in each muscle fiber

B. Number of mitochondria in each muscle fiber

C. Percentage of muscle fibers within the muscle that are utilized

D. Quantity of actin and myosin in each muscle fiber

Answer 1

All the options are necessary for maximal work. But the important ones in descending order is as following -

1) Percentage of muscle fibers within the muscle that are utilized - more the muscle fibers, more will be the strength and more easier will be weight lifting.

2) Number of mitochondria in each muscle fiber - More the number of mitochondria , more will be the energy stored.

3) Quantity of actin and myosin in each muscle fiber- These both are contractile proteins. More the number of these two , more will be the contraction.

4) Quantity of lactate in each muscle fiber- It is mostly important in dynamic exercises and not static exercises like weight lifting. In case deficincy of oxygen , lactate causes anaerobic glycolysis.