High-frequency low-load blood flow-restricted resistance exercise is associated with a delayed increase in satellite cell numbers, peaking 10 days after training cessation, with type II muscle fibers showing a 147% increase and type I muscle fibers an 80% increase, indicating prolonged activation of muscle repair mechanisms.

When muscles are exercised with tight bands restricting blood flow, the cells inside the muscle fibers get stressed and temporarily shrink. This stress triggers a slow-building repair process: special muscle repair cells wake up, multiply, and then fuse with the muscle fibers to add new genetic control centers. These extra control centers let the muscle fibers make more protein, causing them to grow larger over time. This growth happens slowly, peaking about 10 days after exercise stops, and affects the fast-twitch muscle fibers more than the slow-twitch ones.