Can you EXPLAIN the difference between heart rate at rest, then immediately after excercise?

Question

Why is your blood pumping faster? How does that affect the breathing rate?

Answer 1

The body essentially cycles through four processes/energy sources when you exercise:

1. When you initially begin exercising, your muscles utilize the oxygen stored in the myoglobin of your muscles to generate ATP for contraction.

2. The phosphagen system then assumes the role of providing ATP after oxygen reserves in myoglobin become depleted. By transferring inorganic phosphate groups from creatine phosphate to ADP, ATP is produced.

3. Anaerobic respiration relieves the phosphagen system when creatine phosphate supplies are exhausted. The oxidation of glucose (reserves of glucose are provided by glycogen and blood) yields 2 ATP per glucose molecule and lactic acid (a muscle irritant).

4. Lastly, aerobic respiration is necessitated for prolonged exercise. The presence of oxygen drastically improves the efficiency of oxidizing glucose - now contributing 36-38 ATP per glucose molecule.

Your heart rate increases to convey oxygen to all the muscles of the body during aerobic respiration. Higher breathing rate is established as a direct result of the four processes in a condition known as postexercise oxygen consumption (EPOC), or oxygen debt:

1. Higher breathing rate replenishes myoglobin stores of oxygen.
2. Accomodates the reproduction of creatine phosphate for the phosphagen system.
3. Converts lactic acid into glucose.
4. Operates to satisfy the requirement of the higher metabolic rate engendered by higher body temperature during exercise.

Answer 2

I kinda understand your question...your resting heart before is lower because your body can keep up with the demand for oxygen in your body, after a workout, your heart rate will go up because your body is exhausted, like your muscles are broken down, so they need oxygen to re-plenish, so the heart is giving out blood faster and faster, hence the higher rythm, it's like when a store gets busy, the workers have to move faster to sell things.

Answer 3

Your heart is pumping faster to bring more oxygen to your cells and remove the increased levels of carbon dioxide. Cellular respiration is being performed by the mitochondria and they require oxygen to make energy and give off the carbon dioxide. Exercise increases both of these things. Your breathing rate increases to bring in more oxygen and take away the increased carbon dioxide

Answer 4

When you exercise, your body needs more oxygen to supply the needed energy. Your heart and breathing rate increase to meet that demand.

Answer 5

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