Are these two graphs giving a consistent message? Explain ID moodle.federation.e

Question

Are these two graphs giving a consistent message? Explain

ID moodle.federation.edu.au Each Athlete, List The Fuels Used At Various S...I Chegg.com Google Intensity and duration determine fuel use Human Fuel Utilization in Exercise Total Calories of fuel burned per minute increases as exercise intensity increases Max r 20 Fat Burning 18 Ciscese 14 10 Carbohydrate Burning 8 FFA 10 50 100 150 200 250 300 Power Output or Exercise Intensity (watts) I Redrivn fremGA Brooks(1998) CenBiochem Physiol 120 89, 107 Q1. Are these two graphs giving a consistent message? Explain

Explanation / Answer

The two graphs both individually compare the intensity of exercise with the amount of energy utilized. Therefore, they both depict the same information in different ways.

Description of graphs:

Graph 1 compares the exercise intensity in the X-axis with dietary energy producers like blood Free Fatty Acids (FFA), glucose consumption and muscle glycogen utilization in the Y-axis.

It should be noted that as the exercise intensity increases, the glucose and glycogen utilization also increases. However, it is also evident from the graph that even in the absence of any exercise (when the intensity is 0) there is still some utilization of blood glucose and muscle glycogen. This is because of the requirements of the body systems to perform their basic functions. For example, our heart requires basic energy from carbohydrates (even without any exercising) and oxygen to function 24 hours a day. It is also clear that the amount of glucose requirement is less than that of glycogen utilization before and during an exercise program.

With respect to Free Fatty Acids (FFA) consumption, when there is no exercise there is no utilization of FFA, however, as the exercise output raises, so is the FFA requirement. The body consumes the most of FFA when the intensity is between 40 and 50. Post that intensity of 50, if the exercise intensity is still raised, the utilization of FFA gradually declines (slopes down) and eventually during and after 90 minutes of activity, there is no any consumption by the body.

Graph 2 depicts the exercise intensity (power output in watts) in the X-axis to that of fuel burned per minute (carbohydrates and fats) in the Y-axis. When the exercise intensity is increased the carbohydrate requirement also increases proportionately until it achieves a maximum consumption of this substance with 19 cal/min at 275 power watts of exercise intensity. Later this, the carbohydrate consumption decreases.

As the exercise intensity increases, so is the fat burning. However, when the power output is at 100 watts, the fat consumption is at the peak of 5 cal/min and a further increase in exercise intensity reduces the fat consumption. Eventually, when the intensity is at or beyond 225 watts, the fat utilization by the body is almost zero.

Similarities in the two graphs:

Differences in the graph:

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