This post / discussion is incomplete in many ways; only one is that it fails to explain / account for the difference between
myofibrillar growth vs sarcoplasmic growth and the type of training that accounts for each adaption.
The best approach would be to focus on
myofibrillar growth in the beginning.
Another advantage of
myofibrillar growth is that is more permanent.
Not exact matches
On the other hand, real muscle
growth is caused by
myofibrillar hypertrophy, which happens when you train with heavy weights for low reps, and this type of hypertrophy is also responsible for huge strength gains.
Myofibrillar hypertrophy is the process of enlargement of the size / volume / protein content of the muscle tissue, also known as «real»
growth.
A much more permanent
growth is achieved by the second type of training that causes
myofibrillar hypertrophy.
Myofibrillar Hypertrophy is actual muscle fiber
growth.
Such augmentation correlated with elevated serum testosterone levels and corresponded to significant increases in
myofibrillar protein.3 Testosterone is the primary hormone that interacts with skeletal muscle tissue, and when elevated leads to increased muscle
growth.