How Does Physical Activity Affect Respiratory Rate?

Written by claudette pendleton
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How Does Physical Activity Affect Respiratory Rate?
(flickr.com, cwalker71, theogeo)

Physical activity is movement and motion that causes the human body to begin working harder than usual. However, physical training and activity on a continual basis helps an individual to become more strong and energetic. Continual physical activity also allows a person to be able to exercise longer without getting tired. The amount of physical activity that a person requires depends upon a person’s personal fitness aspirations. However, to prevent injuries, physical activity ought to be performed at a rate suitable for each individual.

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Physical Activity and Respiratory Rate

When a person exercises, the individual’s food energy requirement is increased, resulting in a need for more oxygen as well as food. The person’s pulse rate reveals that the individual’s heart rate has also gone up due to the expanding of the arteries when the ventricles pump blood from the heart. The person’s heart rate increases and pumps additional oxygen and food into the person’s muscles. The individual’s respiratory and breathing rate also rises to obtain additional oxygen and also to release carbon dioxide.

Exercise and Lactic Acid

When people exercise, not only do their pulse and breathing rates rise, but lactic acid levels also rise. Lactic acid is referred to as waste and a poison that assembles in an individual’s muscles, resulting in muscle fatigue. This occurs more so in athletes and in people who are well fit. The amount of time required for an individual's pulse and breathing rates to go back to normal is referred to as recovery time; the more fit that a person is, the less time it will take for a person’s pulse and breathing rates to go back to normal. People who are more fit also produce less lactic acid (poisonous waste) when exercising; therefore, there is less waste to eliminate after exercising. Physical activity increases volume in the lungs, permitting a person to take in more oxygen (good air). When more oxygen is taken in due to physical activity, oxygen is supplied faster, allowing waste substances to be removed. Food and oxygen is also supplied to the muscles at a quicker pace, helping the pulse rate to remain at a lower rate. In addition, when extra oxygen is released to the muscles, less lactic acid is created. A person who has a strong heart and lungs and is fit will receive the required oxygen needed at a much faster pace to rid the body of waste after exercising.

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