Heart Lab

Lab Partners: Rose, Christa

Hypotheses:

1. Null Hypothesis: Male heart rates will equal female heart rates after climbing the stairs at UWMC.

2. Alternative Hypothesis 1: Male heart rates will be more than females after climbing the stairs at UWMC from the bottom to top.

3. Alternative Hypothesis 2: Female heart rates will be more than male heart rates after climbing the stairs at UWMC from the bottom to top.

Prediction:

If males and females both climb the stairs at UWMC from bottom to top then, male's heart rates will exceed that of a females immediately after.

Possible Outcomes:

1. The average heart rate of males will exceed that of a females average heart rate. In this case, our null hypothesis is rejected and alternative hypothesis 1 is supported. We would conclude that males have a higher heart rate than females.

2. The average heart rate of a female will exceed that of a males average heart rate. In this case, our null hypothesis is rejected and alternative hypothesis 2 is supported. We would conclude that females have a higher heart rate than males.

3. There is no statistically significant difference between the average heart rate of males and the average heart rate of females. In this case, the null hypothesis is not rejected and the alternative hypotheses are not supported. We would conclude that there is no difference between the heart rates of females and males.

Materials and Methods:

1. Materials: One stop watch, stairs, and a stethoscope.

2. Methods: The heart rate of each female or male was determined by listening to each subject's heart with the stethoscope and counting the number of heartbeats in fifteen seconds. Time was measured using the stopwatch. The number of beats in fifteen seconds was multiplied by four to obtain the beats per minute. Data were analyzed using a t-test.

Results:

The average heart rate of the males was