The chimney swift's genus name, Chaetura, is a combination of two Greek words: chaite, which means bristle or spine, and oura which means tail. This is an apt description of the bird's tail, as the shafts of all ten tail feathers (rectrices) end in sharp, protruding points.
Definition of Anaerobic Capacity. Anaerobic capacity is your body's capacity to run its systems without using oxygen. It contrasts with aerobic capacity, which requires oxygen as fuel. It is therefore important for high-intensity, low-duration activities such as lifting weights or sprinting. Sprint tests are an effective way to measure your anaerobic threshold.
Cardiovascular fitness is often used in place of aerobic fitness and cardiovascular endurance. Aerobic fitness refers to the capacity to perform aerobic activities for a prolonged period, and is affected by your cardiovascular endurance and aerobic capacity. The American College of Sports Medicine defines endurance as the ability of the circulatory and respiratory systems to supply fuel during sustained activity, and to eliminate fatigue products after supplying fuel.