Hyperplasia, Sarcoplasmic Hypertrophy, & Myofibrillar Hypertrophy

The video tutorial explores muscle growth, focusing on hypertrophy and hyperplasia. It explains that hypertrophy, an increase in muscle fiber size, is the primary mechanism for muscle growth in humans, while hyperplasia, an increase in muscle cell number, plays a minimal role. The tutorial differentiates between myofibrillar hypertrophy, which increases muscle strength by adding sarcomeres, and sarcoplasmic hypertrophy, which enlarges muscle size without increasing strength. It also highlights the importance of muscle quality and how different training regimens can influence the type of hypertrophy achieved.

How do heavy load resistance training and endurance training affect hypertrophy?

Discuss the relationship between muscle size and muscle quality.

What factors contribute to the occurrence of hyperplasia in muscles?