Overload and strength training

6 important questions on Overload and strength training

How come increases in dynamic muscle strength do not represent a same increase in muscle cross-sectional area?

Because the muscle will first become better in neural drive.

How can a muscle cell hypertrophy?

  1. Stimulating the existing muscle nuclei to produce more proteins
  2. Activate satellite cells to incorporate in the muscle cell.

What are the main factors that determine isometric muscle strength?

  1. PCSA
  2. pennation angle
  3. activation frequency
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How come the isometric strength gains are not represented by the increase in muscle CSA?

  • changes in pennation angle
  • changes in muscle composition (e.g. intracellular fat and connective tissue)

What is the only real conclusion regarding strength training that these authors give?

Train heavy, train often

Which signaling pathway may be involved in the hypertrophy of muscle fibers after strength training?

The mechanosensitive Ca2+ channels and NO production.

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