Our body functions and consumes gas (O2) differently at rest and in motion. Energy requirement to maintain the body’s condition at rest is very different than the energy requirement during maximal exercise. At rest, the muscle intake of gas is very little, but during activity, oxygen consumption is multiples due to the intense oxygen demands of the muscles. Other parameters that are expected to change during exercise are metabolic rate, heart rate and blood pressure, stroke volume, cardiac output, and total peripheral resistance.
The energy required to maintain the bodily functions comes from the food that we eat- carbohydrates, fats, and proteins. Metabolism or metabolic rate describes all the chemical changes that occur within our body. …show more content…
The demand for oxygen will increase the need for blood flow as oxygen is carried through hemoglobin. The amount of increase will vary depending on the intensity of the exercise and the fitness level of the subject. The percentage of carbohydrates and fats oxidized will also vary depending on the subject
To perform the experiment successfully, the subject must have not eaten heavily or have done strenuous exercise before the conduction of this experiment. For the first part of this lab, we measured basal metabolic rate (BMR) by having the subject breathes in and out the clean mouthpiece for 6 minutes and rest for 5 minutes. The subject was fitted with a nose clip, heart rate monitor, wrist monitor, and blood pressure cuff to measure heart rate and blood pressure at rest. Afterward, in the Bicycle Ergometer experiment, we measured these parameters again every 30 seconds while the subject pedaled at their light resistance and moderate resistance. We used those measurements to calculate the stroke volume, cardiac output, and total peripheral resistance. Lastly, the treadmill experiment, the subject was affixed with a heart rate monitor and mouthpiece while performing the experiment. The parameters include heart rate, % O2, …show more content…
However, the calories of heat per day is 3030 which Is higher than average of 200 calories a day. This could because the subject has a fast metabolism and is physically fit compare to average person. As shown in Table 2A, B, and C, the bicycle experiment resulted in an increase in heart rate, stroke volume, and cardiac output as the resistance increased. This indicates the heart responded to the stress of exercise by working/pedaling harder. Since oxygen is used to make energy, the more oxygen is needed when muscle contracts because muscle contraction will deplete energy faster. Due to the increase in oxygen consumption when the body is active, the heart would have to work harder to maintain and deliver the supply of oxygen to control and function blood circulation. In addition, the total peripheral resistance is decreased with the increasing exercise resistance, allowing the blood to flow more freely. This is because the smooth muscle becomes relaxed, which causes vasodilation and leads to the decreased resistance. In sum, the more physical activity that the body performs, the more blood needs to be pumped to regulate the CO2 and O2
The energy required to maintain the bodily functions comes from the food that we eat- carbohydrates, fats, and proteins. Metabolism or metabolic rate describes all the chemical changes that occur within our body. …show more content…
The demand for oxygen will increase the need for blood flow as oxygen is carried through hemoglobin. The amount of increase will vary depending on the intensity of the exercise and the fitness level of the subject. The percentage of carbohydrates and fats oxidized will also vary depending on the subject
To perform the experiment successfully, the subject must have not eaten heavily or have done strenuous exercise before the conduction of this experiment. For the first part of this lab, we measured basal metabolic rate (BMR) by having the subject breathes in and out the clean mouthpiece for 6 minutes and rest for 5 minutes. The subject was fitted with a nose clip, heart rate monitor, wrist monitor, and blood pressure cuff to measure heart rate and blood pressure at rest. Afterward, in the Bicycle Ergometer experiment, we measured these parameters again every 30 seconds while the subject pedaled at their light resistance and moderate resistance. We used those measurements to calculate the stroke volume, cardiac output, and total peripheral resistance. Lastly, the treadmill experiment, the subject was affixed with a heart rate monitor and mouthpiece while performing the experiment. The parameters include heart rate, % O2, …show more content…
However, the calories of heat per day is 3030 which Is higher than average of 200 calories a day. This could because the subject has a fast metabolism and is physically fit compare to average person. As shown in Table 2A, B, and C, the bicycle experiment resulted in an increase in heart rate, stroke volume, and cardiac output as the resistance increased. This indicates the heart responded to the stress of exercise by working/pedaling harder. Since oxygen is used to make energy, the more oxygen is needed when muscle contracts because muscle contraction will deplete energy faster. Due to the increase in oxygen consumption when the body is active, the heart would have to work harder to maintain and deliver the supply of oxygen to control and function blood circulation. In addition, the total peripheral resistance is decreased with the increasing exercise resistance, allowing the blood to flow more freely. This is because the smooth muscle becomes relaxed, which causes vasodilation and leads to the decreased resistance. In sum, the more physical activity that the body performs, the more blood needs to be pumped to regulate the CO2 and O2