![]() As deoxygenated blood moves through the capillaries, they pick up oxygen from the alveoli through diffusion (flow of matter from higher concentration to lower concentration)įrom there, carbon dioxide is exhaled out of the lungs through the mouth, whereas oxygen-rich blood is sent to the heart and pumped to the entire body. This is also where gas exchange (the process where oxygen and carbon dioxide move between the bloodstream and the lungs) occurs. Into smaller and smaller passageways (bronchioles)Įach alveoli is covered by small blood vessels called capillaries.Into the lungs via two main airways (left and right bronchi).Down the throat into the windpipe (trachea).Their main function is respiration, which can be divided into two phases inspiration (breathing in oxygen) and expiration (breathing out carbon dioxide). During inhalation, air enters through the mouth and nose and moves: Lungs are the most important part of the respiratory system. Thus, the coordinated function of these systems have a tremendous impact on how well your body performs during longer activities. The better your body is able to deliver and utilize oxygen during exercise, the better your endurance capacity is. ![]() Without a strong heart, oxygen-rich blood could not be delivered to the body’s cells and back. Both systems are also dependent on each another without healthy lungs, your body would be unable to breathe in oxygen. Their main purpose is to ensure that your tissues have enough nutrients and oxygen to maintain vital functions, while getting rid of harmful byproducts like carbon dioxide. To understand the mechanics of endurance capability, we must first take a look at how the cardiorespiratory system works.Ĭardiorespiratory system is a combination of two separate systems the circulatory system (heart, veins, arteries, blood) and the respiratory system (lungs, nose & nasal cavity, sinuses, mouth, pharynx, larynx, trachea, diaphragm, bronchial tubes, bronchioles, alveoli, capillaries). In fact, it is nearly impossible to train the other one without having an effect on the other. It is important to remember that cardiovascular endurance and muscular endurance support each other than fight against one another. ![]() Muscular endurance refers to the ability to maintain contracting a muscle, or group of muscles, against resistance for an extended period of time. The most accurate method to estimate endurance is maximal oxygen uptake (VO₂max), which describes the maximal amount of oxygen used during intense exercise. This makes it especially important in prolonged low-intensity activities. The benefit of producing energy aerobically (with oxygen) is that it can be used to produce vast amounts of energy, albeit at a relatively slow rate. Endurance is a combination of two different factors cardiovascular endurance and muscular endurance.Ĭardiovascular endurance relies on your cardiorespiratory system’s (circulatory system & respiratory system) ability to deliver oxygen to working muscles, where it can be used to produced energy. Endurance describes your body’s ability to maintain muscle movement for an extended amount of time.
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