# Heart rate change

## problem:

Does holding a 30 pound weight effect your heart rate differently then running without a weight?

## Research:

The amount of exercise your body can do can effect the heart rate of a person. When you exercise, your pushing your muscles that allow increasing blood flow to the heart. The heart needs a large blood flow. And needs a lot of blood. But when the blood is flowing it goes to other muscles cause little blood going to your heart. Making your heart rate speed up. The body needs oxygen to work. And need it when you exercise, so the heart bumps faster to make blood flow to your muscles.

http://www.active.com/fitness/articles/how-does-exercise-affect-your-heart

## Hypothesis:

If you run with a 30 pound weight, then your heart rate will be faster then if you ran without weight added, because the more weight added your heart rate will beat faster.

## Control:

1: Amount of time running

2: Resting heart rate

## Conclusion:

If you run with a 30 pound weight, then your heart rate will be faster then if you ran without weight added, because the more weight added your heart rate will beat faster. On the data table, it showed we decreased heart rate. Michelle's average is 145 beats per minute and running with a 25 pound weight was an average of 184 beats per minute. This happened because the more weight added to the body makes your muscles work harder when running and holding the weight at the same time. Making the oxygen flow faster through your body making your heart beat faster.