Caffeine Heart Rate Lab Report

The question that was tested for this Heart Rate Lab was how might caffeine affect people’s heart rate. Caffeine is supposed to affect our nervous system and brain by buzzing them. We decided to include caffeine in our lab by having one out of 2 groups of 5 people drink caffeinated soda .Then, participants completed two activities, taking their pulses after each event. The second group (B) did everything just as group A, except drink any soda. Our hopes were that pulse rates would raise higher with caffeine in the blood stream, and this lab did not disappoint. The hypotheses for this lab stated, “If a person is given caffeinated soda, and then goes and completes an activity , their BPM should be slightly higher than somebody who has completed the activity without any soda because 1. the caffeine should definitely have an affect with heart rate , and just eating may get blood pumping in order to digest and absorb food.”

But there were many unsure points and errors which could have thrown the results off. The average resting rate (BPM) from Group A was 85.4 and Group B’s was 73.6. The stair climbing rate was 126.8(A) and 111.6(B) However, some contestants had unusual results, such as Britney from Group A ,whose BPM seemed unusually higher than others (114,146) and Sydney, (A) started with a very low bpm (62) which was the lowest out of all group members. Two other outliers from Group B (Kate and Ryan) started with higher resting rates by at least 10 beats more than other members from B which made the results look less and less reassuring. These standout data points made us question how accurate our hypothesis had been. This data may have had it’s rising trends for other reasons as well. From background information we later learned after conducting the experiment ,that caffeine won’t take immediate effect until 15