Final answer:
The heart rate needs to be greater than 110 bpm during exercise to meet the increased demand for oxygen and nutrients by the body's tissues. This indicates that the body is working at a higher intensity and requires a greater cardiac output to supply enough blood to the muscles. If the heart rate remains below 110 bpm, it may not be sufficient to provide an efficient supply of oxygen-rich blood during exercise.
Step-by-step explanation:
During exercise, the heart rate increases in order to meet the increased demand for oxygen and nutrients by the body's tissues. When the heart rate exceeds 110 bpm, it indicates that the body is working at a higher intensity and requires a greater cardiac output (CO) to supply enough blood to meet the demands of the muscles. If the heart rate remains below 110 bpm, it may not be sufficient to provide an efficient supply of oxygen-rich blood during exercise.
For example, let's say an individual is performing aerobic exercise such as running. As the intensity of the exercise increases, their heart rate will also increase. If their heart rate remains below 110 bpm, it may not be able to pump enough blood to supply the muscles with oxygen and nutrients, leading to muscle fatigue and decreased exercise performance. However, if the heart rate exceeds 110 bpm, it indicates that the heart is working harder to meet the demands of the body, resulting in a higher cardiac output and a more efficient supply of blood to the muscles.
In conclusion, having two consecutive stages where the heart rate is greater than 110 bpm is important to ensure that the body is working at an optimal level during exercise, providing enough oxygen and nutrients to the muscles for efficient performance.