It grows up to 12 feet tall in USDA zones 5 through 9. Another shrub, called the wayfaringtree viburnum (Viburnum lantana Mohican), grows 7 or 8 feet tall, blooms for three weeks in May and produces orange-red berries in July that ripen to black near summer's end. It grows in USDA zones 4 through 8.
fast-twitch (FT) fiber. a muscle fiber that can develop high tension rapidly. It is usually innervated by a single alpha neuron and has low fatigue resistance, low capillary density, low levels of aerobic enzymes, and low oxygen availability. FT fibers are used in such activities as sprinting, jumping, and weight-lifting.
The average person has approximately 60% fast muscle fiber and 40% slow-twitch fiber (type I). There can be swings in fiber composition, but essentially, we all have three types of muscle fiber that need to trained.mooth muscle tissue is located in the walls of hollow structures such as blood vessels, the stomach, intestines, and the bladder. Smooth muscle fibers are usually involuntary, and they are non-striated (smooth). Smooth muscle tissue, like skeletal and cardiac muscle tissue, can undergo hypertrophy (growth).