We are searching data for your request:
Upon completion, a link will appear to access the found materials.
Anaerobic respiration occurs in your body when there is not enough oxygen to completely break down glucose for your energy needs. When you exercise vigorously, you force your muscles to work harder, until they eventually reach a point where your lungs can no longer supply sufficient oxygen.
Aerobic vs. Anaerobic Respiration
Aerobic respiration, which takes place in the mitochondria of your cells when oxygen is present, produces energy from the complete breakdown of glucose, as well as water and carbon dioxide. These byproducts are easily expelled when you breathe. Anaerobic respiration produces less energy; it also produces lactic acid, which is not easily expelled -- it builds up in your muscles and causes soreness and fatigue.
Knowing the difference between aerobic and anaerobic training is especially important for competitive athletes such as runners. If you run too hard and too soon in a race, your muscles will tire and force you to slow down before the race is over. If this happens in a longer race, you may not even be able to finish. Part of your training must involve learning how to stay in your aerobic zone.
Different running distances require different levels of aerobic and anaerobic contribution. For instance, a shorter run of about two miles requires less aerobic energy, between 86 percent and 93 percent. A marathon, which is over 26 miles, requires 99 percent. Close to the end of a marathon, runners typically sprint and start running anaerobically. You can monitor yourself with the "talk test" to make sure you are running aerobically. You should be able to carry on a short conversation without gasping.
Using a Heart Monitor
Using a heart rate monitor can help you determine your exercise intensity more accurately than taking your pulse. This allows you to stay in your aerobic zone. The faster your heart beats, the harder you are working and the sooner you enter your anaerobic zone. Maximum heart rate, which determines how much blood your heart can pump, tends to go down with age.