If the experiment were to be completed again, it could’ve been more accurate if there was a longer resting period after the exercise so your heart rate can slow down completely.

The experiment also could’ve been more valid if the same exercise was performed for the three trials.

During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. During exercise, your heart typically beats faster so that more blood gets out to your body.

Dependent Variable (Y): Heart rate (Bpm) 

Control Group: Kinza did not receive the variable
 

Experimental Group: Matthew received the variable “change”

Factors held constant:

Hypothesis: We think it does because your heart is working harder for the more you exercise because it has to keep up with your effort into your exercise.

If you perform a physical activity, your heart rate will increase 

2: We then measured Matthew’s heart rate while he exercised for a minute at full pace. We repeated this process 3 times as well with different exercises each time. 

3: Next we measured Matthew’s heart rate to see how many times it beat every 15 seconds and then multiplied that by 4 to determine how many times it would beat every 60 seconds. And then we recorded all the data in the data table