Discussion:
The heart delivers blood around the body during exercise in order to supply the muscles with oxygen and nutrients and to carry away wastes. As the demand of the exercise increases so does the energy needs of the muscles, therefore, the heart must quickly deliver blood to support the appropriate organs in enabling the replenishment of oxygen and nutrients as they are used up by the muscles. As exercise intensity and duration increases the body produces more wastes which leads to an increased heart rate so the blood can remove the wastes more quickly. When exercising muscles increase their activity level and consume more oxygen and the heart must be able to supply them with oxygen so they can produce that energy which comes in the …show more content…
Ishini’s heart rate at this point was 200 beats per minute, which is very close to her maximum heart rate (203). Despite the fact that the exercise intensity is increasing, Ishini’s heart rate levels off and becomes a steady state meaning the heart rate and oxygen remain constant. At this point Ishini’s heart rate was between 195 and 200bpm. Ishini’s maximum heart rate can be found by subtracting her age from 220. In this experiment Ishini was very close to reaching her maximum heart rate, indicating she was working very close to her maximum aerobic ability. Jack’s heart rate (141) begins lower than Ishini’s (174) and increases more gradually whilst increasing the speed, however due to the heart rate monitor buckling the data for the next 3 levels could not be collected. Ishini’s heart rate plateaus as this is her maximum heart rate, which is a result of an appropriate supply of oxygen in order to meet the metabolic demands of the exercise. This is a result of her reaching the lactate threshold whereby the intensity of the exercise has led to lactate accumulating in the blood faster than it can be removed. As the intensity of the exercise is always increasing, Ishini needed more ATP, and in doing so her body transitioned to aerobic glycolysis where at the end of it, a lot of ATP was formed and the glucose has been completely used up, resulting in the release of lactic acid and hydrogen ions that cause fatigue. When her maximum heart rate was achieved Ishini could only keep running at this pace for 2-3 minutes before her muscles succumb to fatigue. Lactate threshold would be different for Ishini and Jack as they vary in their own cardiovascular
The heart delivers blood around the body during exercise in order to supply the muscles with oxygen and nutrients and to carry away wastes. As the demand of the exercise increases so does the energy needs of the muscles, therefore, the heart must quickly deliver blood to support the appropriate organs in enabling the replenishment of oxygen and nutrients as they are used up by the muscles. As exercise intensity and duration increases the body produces more wastes which leads to an increased heart rate so the blood can remove the wastes more quickly. When exercising muscles increase their activity level and consume more oxygen and the heart must be able to supply them with oxygen so they can produce that energy which comes in the …show more content…
Ishini’s heart rate at this point was 200 beats per minute, which is very close to her maximum heart rate (203). Despite the fact that the exercise intensity is increasing, Ishini’s heart rate levels off and becomes a steady state meaning the heart rate and oxygen remain constant. At this point Ishini’s heart rate was between 195 and 200bpm. Ishini’s maximum heart rate can be found by subtracting her age from 220. In this experiment Ishini was very close to reaching her maximum heart rate, indicating she was working very close to her maximum aerobic ability. Jack’s heart rate (141) begins lower than Ishini’s (174) and increases more gradually whilst increasing the speed, however due to the heart rate monitor buckling the data for the next 3 levels could not be collected. Ishini’s heart rate plateaus as this is her maximum heart rate, which is a result of an appropriate supply of oxygen in order to meet the metabolic demands of the exercise. This is a result of her reaching the lactate threshold whereby the intensity of the exercise has led to lactate accumulating in the blood faster than it can be removed. As the intensity of the exercise is always increasing, Ishini needed more ATP, and in doing so her body transitioned to aerobic glycolysis where at the end of it, a lot of ATP was formed and the glucose has been completely used up, resulting in the release of lactic acid and hydrogen ions that cause fatigue. When her maximum heart rate was achieved Ishini could only keep running at this pace for 2-3 minutes before her muscles succumb to fatigue. Lactate threshold would be different for Ishini and Jack as they vary in their own cardiovascular