Question

A biology student wanted to determine if there is a relationship between resting heart rate and time spent exercising per week.

Answer 1

69 bpm

Step-by-step explanation:

1.) There is an inverse trend seen in the graph. Students who do less exercise tend to have a higher resting heart rate, while students who do more exercise tend to have a lower resting heart rate.

2.) Using the line created by the data points, we can determine that students who exercise around 3 hours per week seem to have resting heart rates between 68-72 bpm.

3.) The correct answer is: 69 bpm

Answer 2

YES, there is a relationship between resting heart rate and physical activity.

The higher the physical activity, the better the physical performance, the better the cardiac contractile quality, therefore the lower the heart rate at rest.

Step-by-step explanation:

The heart is a muscle that is trained like the rest, when practicing physical activity it contracts and expels blood more often and more intensely.

Thus generating that the contractile power is more effective, that is to say that in each bombardment it ejects more blood into the aorta, therefore there will be less effort at rest.

This is how training generates hypertrophy of myocytes, they contract better, generate blood ejection to the vascular system in a more efficient contraction compared to sedentary, therefore the oxygenated volume will not have to be replaced immediately, thus generating the heart have to beat or eject more slowly.

By contracting fewer times per minute, we are faced with the phenomenon of decreased heart rate, this is measurable by taking the pulse of an athlete at rest and comparing it with a sedentary person also at rest.