Biology 105 Human Biology. Session: Section: Class Location: Days / Time: Instructor:

Transcription

1 Student ID#: Student Name MS Universe s Lab Assignment #: Lab #4 Team Name: Body Builders Lab Title: Muscle Date: Purpose / Objective(s): Take measurements in the lab of effects to heart rate and respiratory rate before and after lifting three different weights in an attempt to achieve muscle fatigue Hypothesis (ese): Assumption that there will eventually be a point where my body will be unable to continue performing a specific function, i.e., doing a bicep curl, after a specific amount of time, weight, or reps After doing a large number of reps, I assume my heart rate will increase Respiratory rate should increase theoretically after a high number of reps with a large weight Men theoretically will be able to lift heavier weights, do more reps, and have higher heart rates and respiratory rates Materials / Subjects / Specimens: Materials used included free weights at different weights, such as 3 pounds, 5 pounds, 7 pounds Data was recorded for 5 human subjects Methods / Tools / Instrumentation / Procedures: Exercise repetitions or reps were counted during a 60 second period using the wall clock or an iphone timer Heart rate (BPM or beats per minute) was measured at resting/before muscle fatigue test, and after repetitions, and at 3 minute, 6 minute and 10 minute intervals, for three different weights Respiratory Rate (RR: amount of breaths in and out per minute) was measured at resting/before muscle fatigue test, and after repetitions, and at 3 minute, 6 minute and 10 minute intervals, for three different weights Page 1 of 15 LAB 4 Muscle Good Example

2 Results: Tables Table #1 summarizes: Heart Rate for myself (Carly OPHDM) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Table #2 summarizes: Respiratory Rate (RR or breaths in and out in one minute) for myself before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Table #3 summarizes: Heart Rate for my four classmates Nonnie, Chrissy, Yesenia, and Kaley before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Table #4 summarizes: Respiratory Rate for my four classmates Nonnie, Chrissy, Yesenia, and Kaley before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Table #5 summarizes: Average of 5 people for Heart Rates (BPM or beats per minute) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Table #6 summarizes: Average of 5 people for Respiratory Rates (RR or breaths in and out in one minute) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Results: Graphs Figure #1 shows a graph of correlation between work and heart rate at peak performance for myself. Figure #2 shows a graph of heart rates at resting, peak, and 10 minutes post peak. Figure #3 shows a graph of maximum number of repetitions at low weight for 5 students. Figure #4 shows a graph of respiratory rates pre-stress, peak, and 6 minutes post stress. Figure #5 shows a graph of correlation between number of repetitions and resistance (weights in pounds). Figure #6 shows a graph of respiratory rates pre-stress, peak, and 6 minutes post stress. Page 2 of 15 LAB 4 Muscle Good Example

3 Analysis: Tables Table #1 summarizes heart rate for myself (Carly OPHDM) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes. With a low weight of 2 pounds, I was able to do a high number of repetitions at 44, but at a 7 pound weight, I was only able to do 29 reps. My heart rate was actually lower at 10 minutes post workout at 60 than before starting at rest at 76 beats per minute. Table #2 summarizes respiratory rate (RR or breaths in and out in one minute) for myself before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes. My respiratory rate started at 15 pre-stress, and had a peak at 23, and at 10 minutes post peak it was at 17. Table #3 summarizes heart rate for my four classmates Nonnie, Chrissy, Yesenia, and Kaley before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes. Heart rates averaged per person widely varied from 79 to 98 pre-stress. Heart rate at peak average varied from Heart rates at 10 minutes post peak average per person varied from 74-76, a much closer statistic. Table #4 summarizes respiratory rate for my four classmates Nonnie, Chrissy, Yesenia, and Kaley before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes. All four women each used weights here of 3 pounds, 7 pounds, and 15 pounds. Respiratory rates pre stress were either 19 of 20 for all four women. Respiratory rates at peak interval average varied from breaths per minute. Respiratory rates at 6 minutes post cardiac stress varied from breaths per minute. Table #5 summarizes an average of 5 people for Heart Rates (BPM or beats per minute) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes. reps for the low weight averaged a high number at 47, and for the medium weight at 41, and then 26 at the highest weight. So as the weight increased, the number of repetitions decreased. Table #6 summarizes the average of 5 people for Respiratory Rates (RR or breaths in and out in one minute) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes. Respiratory rates at peak fatigue varied from breaths per minute. Respiratory rates at 3 minutes post peak were very close together, and averaging at 21.3 breaths per minute. Respiratory rates at 10 minutes post peak varied from breaths per minute with an average of So, respiratory rates followed a pattern of being higher at peak and lower post peak. Analysis: Graphs Figure #1 shows a graph of a correlation between work and heart rate at peak performance for myself. This shows a correlation, that as your heart rate goes up, your work rate also goes up as well. Figure #2 shows a graph of heart rates at resting, peak, and 10 minutes post peak. At resting, heart rates were low, and at peak, heart rates were high, and then decreasing by 10 minutes post peak for most students. Figure #3 shows a graph of maximum number of repetitions at low weight for 5 students. These varied closely from 44 to 51. At a lower weight, we were able to do more repetitions per minute. At a higher weight, we were able to do less repetitions, due to muscle fatigue. Page 3 of 15 LAB 4 Muscle Good Example

4 Figure #4 shows a graph of respiratory rates pre-stress, peak, and 6 minutes post stress for 5 students. Most students, like myself, showed a pattern of a low number pre-stress, a high number at peak, and a medium number at the 6 minute post stress level. Chrissy showed the same respiratory rate for all three levels of pre-stress, peak, and 6 minutes post stress. I m not sure if this means there was an error in recordkeeping or if this is a different type of heart/cardiac activity, that her heart was not stressed during this activity. Figure #5 shows a graph of the theoretical correlation between number of repetitions and resistance (weights in pounds). Theoretically, at a higher number of weight resistance, there should be less number of repetitions. This scatter plot did not quite come in at a perfect linear line, so I m not sure if I did this one incorrectly or if the data is supposed to plot in this manner. Figure #6 shows a graph of the correlation between work and peak respiratory rates. Theoretically, as work increases, so should respiratory rates. The scatter plot and linear line seemed to show a better correlation in this graph than in Figure #5. Page 4 of 15 LAB 4 Muscle Good Example

5 ATTACHMENTS Summary / Formal / Conclusive Results / Tables, Charts, Illustrations Table #1 shows Heart Rate for myself (Carly OPHDM) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Self/Carly (LBS) Reps for 1 Minute or Work Ht Rate Pre Ht Rate at Peak / 6 Minutes Low Medium High Average Table #2 shows Respiratory Rate (RR or breaths in and out in one minute) for myself before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Self/Carly Resp Rate Pre Resp Rate at Peak / Resp Rate Post Resp Rate Post 6 Minutes Low Medium High Average Page 5 of 15 LAB 4 Muscle Good Example

6 Table #3 shows Heart Rate for my four classmates Nonnie, Chrissy, Yesenia, and Kaley before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Nonnie LB Reps for 1 Minute or Work Ht Rate Pre Ht Rate at Peak / 6 Minutes Low Medium High Average Chrissy LB Reps for 1 Minute or Work Ht Rate Pre Ht Rate at Peak / 6 Minutes Low Medium High Average Yesenia LB Reps For 1 Minute or Work Heart Rate Pre Heart Rate at Peak 6 Minutes Low Medium High Average Kaley LB Reps for 1 Minute or Work Ht Rate Pre Ht Rate at Peak / 6 Minutes Low Medium High Average Page 6 of 15 LAB 4 Muscle Good Example

7 Table #4 shows Respiratory Rate for my four classmates Nonnie, Chrissy, Yesenia, and Kaley before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes Nonnie Resp Rate Resp Rate at LB Pre Peak / 6 Minutes Low Medium High Average Chrissy LB Resp Rate Pre Resp Rate at Peak / 6 Minutes Low Medium High Average Yesenia LB Resp Rate Pre Resp Rate at Peak / 6 Minutes Low Medium High Average Kaley LB Resp Rate Pre Resp Rate at Peak / 6 Minutes Low Medium High Average Page 7 of 15 LAB 4 Muscle Good Example

8 Table #5 shows an average of 5 people for Heart Rates (BPM or beats per minute) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes / Resistance Level LBS Reps for 1 Minute or Work Ht Rate Pre Ht Rate at Peak / Ht Rate Post Ht Rate Post 6 Minutes Low Medium High Average Table #6 shows an average of 5 people for Respiratory Rates (RR or breaths in and out in one minute) before bicep curls and at peak, and at intervals after of 3 minutes, 6 minutes, and 10 minutes / Resistance Level LBS Resp Rate Pre Resp Rate at Peak / 6 Minutes Low Medium High Average Page 8 of 15 LAB 4 Muscle Good Example

9 Figure #1: Graph of Correlation between Work and Heart Rate at Peak Performance (self) Page 9 of 15 LAB 4 Muscle Good Example

10 Figure #2: Graph of Heart Rates at Resting, Peak, and Post Peak for 5 Students Page 10 of 15 LAB 4 Muscle Good Example

11 Figure #3: Graph of Maximum Number of Repetitions at Low for 5 Students Page 11 of 15 LAB 4 Muscle Good Example

12 Figure #4: Graph of Respiratory Rates Pre-, Peak, and 6 Minutes Post Page 12 of 15 LAB 4 Muscle Good Example

13 Figure #5: Graph of Correlation Between Number of Repetitions and Resistance (s in Pounds) Page 13 of 15 LAB 4 Muscle Good Example

14 Figure #6: Graph of Correlation Between Work and Peak Respiratory Rates Page 14 of 15 LAB 4 Muscle Good Example

15 References 1. How to use correlations in Excel, website reference 2. How to use correlations in Excel, YouTube video reference Observations/Conclusions / Further Considerations: 1. At the highest weight, it was getting harder and harder for me to do repetitions on the last weight, until I got to a point where I could no longer lift the weight in a bicep curl. For the 7 pound weight, I was only able to do 29 repetitions in 1 minute and my arm was quite fatigued to the point of no longer being able to move. At heavier weights for all students, we all did less repetitions, as our muscle was getting fatigued. 2. Theoretically, I believe men would lift heavier weights and do more reps. However, this lab and the previous has also shown, that it s very hard to get data from male lab partners in a consistent manner. We asked for data via and on the Facebook website. When we saw a lone wolf male in our group study meeting, alas, he brought his computer, but not his notebook, where his data was. Ah, the male lab data is quite elusive this spring season. 3. As you are working out, your heart rate, respiratory rate and work will increase to a peak level, and then drop off at different time levels until your body is back at rest. This usually follows a pattern for most students, but not all. This anomaly could be record keeping errors, such as transposed numbers, or perhaps different levels of cardiac abilities per person which will differ. 4. For students with good cardiac state and student athletes, they should be able to recover quickly, lift heavier weights and do more repetitions that those of us that are couch potatoes. On future labs, we can also collect data on students workouts/week and body fat percentages to muscle to compare and contrast student data. 5. As you increase the weight used in the bicep curl, the repetition totals will slow, but the heart rate will actually increase, as it is working harder to lift the weight. This makes sense as the heart is pumping faster. Page 15 of 15 LAB 4 Muscle Good Example