Researchers argue that strength training may also promote a small increase in muscle fiber number (hyperplasia). Nonetheless, the concept of hyperplasia remains controversial and limited evidence exists that hyperplasia occurs in humans.
MacDougal, J. 1992. Hypertrophy or hyperplasia. IN Strength and Power in Sport, ed. P. Komi, 230-38. London: Blackwell Scientific Publishing.
Sjostrom, M. et al. 1991. Evidence of fiber hyperplasia in human skeletal muscles from healthy young men? European Journal of Applied Physiology 62:310-4.
Umnova, M., and T. Seene. 1991. The effect of increased functional load on the activation of satellite cells in the skeletal muscles of adult rats. International Journal of Sports Medicine 12:501-4.