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.
White fibers tend to have little to no myoglobin. Muscle fibers in general are categorized into three types, based on type of myoglobin (fast or slow) and the method it uses to produce ATP (glycolysis or oxidative phosphorylation): Type I. Slow twitch.Slower to contract, but also slower to fatigue.hite fibers tend to have little to no myoglobin. Muscle fibers in general are categorized into three types, based on type of myoglobin (fast or slow) and the method it uses to produce ATP (glycolysis or oxidative phosphorylation): Type I. Slow twitch. Slower to contract, but also slower to fatigue.