I have never fully understood how this exactly works. These questions pertain to the long term effects of strength training only.
Basic Physiology of Hypertrophy (what is understood)
During muscle hypertrophy you’re tearing myofibrils, which are composed of stacked sarcomere’s.
This tearing causes the immune system to repair the damage. Proteins called cytokines are released to the damaged area.
The Physiological Effects of Detraining (what I DO NOT understand)
Detraining (as related to long term strength training) obviously leads to loss of muscular strength and power.
At a basic physiological level, how is this occurring?
Are the sarcomeres (containing myosin and actin) used as fuel by your body and expelled?
After myofibrils decrease in diameter since they now contain less
Full and Partial answers are both great -- ideally with supporting research. Thanks!