Biomechancis of Breathing
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Breathing involves two main processes: inhalation and exhalation. During inhalation, the diaphragm and intercostal muscles contract, increasing the volume of the thoracic cavity and decreasing pressure in the lungs, allowing air to flow in; during exhalation, these muscles relax, causing the thoracic cavity volume to decrease and air to be expelled from the lungs due to elastic recoil.
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Mouth Breathing
When you breathe through your mouth, you will experience less tissue oxygenation, which causes your heart rate and blood pressure to elevate in an attempt to make up for less efficient breathing.
An elevated heart rate or high blood pressure can cause fatigue and dizziness. In other words, breathing through your nose allows you to absorb more oxygen with less physical exertion.
Furthermore, children who breathe through their mouths may develop with an altered facial structure that causes their face to be longer, which in turn contributes to impaired breathing patterns.
Breathing through your mouth will make it more likely that you hyperventilate or experience allergens.
An elevated heart rate or high blood pressure can cause fatigue and dizziness. In other words, breathing through your nose allows you to absorb more oxygen with less physical exertion.
Furthermore, children who breathe through their mouths may develop with an altered facial structure that causes their face to be longer, which in turn contributes to impaired breathing patterns.
Breathing through your mouth will make it more likely that you hyperventilate or experience allergens.
Bohr Effect
The Bohr effect occurs when hemoglobin’s oxygen-binding affinity decreases in response to increased carbon dioxide (CO₂) levels or decreased blood pH (acidosis) and conversely, affinity increases when CO₂ is low or pH rises (alkalosis). CO₂ reacts with water in the blood to form carbonic acid, which dissociates into hydrogen ions (H⁺) and bicarbonate (HCO₃⁻). The increase in H⁺ ions lowers pH, causing hemoglobin to release oxygen more readily. In the lungs, where CO₂ is exhaled and pH is higher, hemoglobin binds oxygen tightly, facilitating uptake.
Nasal Breathing
Nasal breathing during exercise is better to breathe through your nose than your mouth. While it can be tempting to exhale through our mouths to cope with heavy exertion, this does us fewer favors than maintaining a proper balance of oxygen and carbon dioxide.
One way to work through this tendency is to back off the intensity of your exercise routine until you are able to maintain the routine while breathing only through your nose. This is a different kind of training since it trains your body to become more comfortable and tolerant of holding in carbon dioxide.
Additionally, breathing through the nose allows us access to a small portion of nitric oxide that we carry into our lungs. Nitric oxide helps with maintaining the balance of our bodies. It also helps to dilate our lungs and blood vessels, while providing antibacterial properties to clear out germs and bacteria.
One way to work through this tendency is to back off the intensity of your exercise routine until you are able to maintain the routine while breathing only through your nose. This is a different kind of training since it trains your body to become more comfortable and tolerant of holding in carbon dioxide.
Additionally, breathing through the nose allows us access to a small portion of nitric oxide that we carry into our lungs. Nitric oxide helps with maintaining the balance of our bodies. It also helps to dilate our lungs and blood vessels, while providing antibacterial properties to clear out germs and bacteria.
