There isn't much in the way of 'cause and effect' evidence of muscle hyperplasia in humans in general, let alone on MGF or IGF-1 inducing it. Exercise-induced skeletal muscle growth. ... [Sports Med. read more
The strongest evidence for muscle hyperplasia comes from the way of animal study really: Skeletal muscle fiber hyperplasia. Quite literally counting muscle fibers in animals (mammals) has shown that muscle fiber quantity does increase from exercise. read more
Muscle fiber hyperplasia can contribute to whole muscle hypertrophy. There is human as well as rat, cat, and bird data which support this proposition [6-10, 20, 23, 25, 28, 32-34, 47, 60-66], a veritable wild kingdom of evidence. read more