Student ID(s)#: 02020202

Student Name(s): Super Dooper, Team Name: Fantastic 3

Team Members Names: laLa Gogo and Go Getem Team Members ID#’s 2222222 3333333

Lab Assignment #: 4

Lab Title: Heart Rate Date: 20110228

Purpose / Objective(s):

To be able to understand how an activity affects the heart rate of a person

To learn how to get our heart rate after an activity using the pulse on our neck and a timer

To compare each person’s heart rate after an activity (pre stress, peak activity, post stress 1min/5min)

Hypothesis (ese):

The bigger the size of a person is, the heavier the object he/she can carry.

We believe that as muscles become more fatigue, the heart rate of a person increases.

Materials / Subjects / Specimens:

Materials Specimens

Timer (iPhone)

Students (Arvin Ben Cecilia)

Weighing Scale

Light-heavy Weights: Box

Dumbbells

Lab Computer

Methods / Tools / Instrumentation / Procedures:

1. First we took our heart rate during resting phase (Figure 1) from our neck by counting the pulse it beat while keeping track of our time, which was1 minute (Figure 2). And when the time stops at 1 minute, the last number that we counted will be our heart rate. Then we recorded the data on our paper. (Arvin took this picture supposedly standing up not sitting down.)

2. Then, we took the weight of the objects that we used during the different levels of activity (figures 2-4) – light, medium, heavy weight – with the weighing scale (figure 1).

3. Then each one took turns in lifting the weights, from light to heavy weight, then takes each one’s heart rate after peak activity and fatigue activity from the neck by counting the pulse it beat while keeping track of the time using the iPhone timer (1 minute for peak activity, 5 minutes for fatigue). And when the time stops at 1 minute or 5 minutes, the last number that each one counted will the heart rate.

Figures show: Ben lifting weights, from light to heavy weight. After the peak/fatigue activity, he took his heart rate while Arvin was keeping track of the time (1 or 5 minute).

Figures show: Arvin lifting weights, from light to heavy weight. After the peak/fatigue activity, he took his heart rate while Ben was keeping track of the time (1 or 5 minute).

Figures show: Cecilia lifting weights, from light to heavy weight. After the peak/fatigue activity, she took her heart rate while Arvin was keeping track of the time (1 or 5 minute).

4. Finally, after gathering all the data information we needed for this muscle fatigue lab activity, Cecilia entered in the data in the template using the lab computer.

Results

Table:

The table shows the Weight of the object, Lifting Repetitions, Heart Rate Press Stress/Post Stress (1 minute)/Post Stress (5 minutes).

Ben

Weight /

Resistance

Level

Weight (lbs)

Reps for 1

Minute or

Fatigue

Ht Rate Pre

Stress

Ht Rate at Peak /

Fatigue

Ht Rate Post

Stress

1 Minute

Ht Rate Post

Stress

5 Minutes

Low 8.0 78 85 98 77 91

Medium 40.0 59 85 117 112 87

High 43.0 30 85 125 115 78

Average 30.3 55.7 85.0 113.3 101.3 85.3

Arvin

Weight /

Resistance

Level

Weight (lbs)

Reps For 1

Minute or

Fatigue

Heart Rate Pre

Stress

Heart Rate at

Peak

Heart Rate Post

Stress 1 Minute

Heart Rate Post

Stress 5

Minutes

Low 3 44 98 104 100 96

Medium 20 30 98 135 114 94

High 33 24 98 135 110 83

Average 18.7 32.7 98.0 124.7 108.0 91.0

Cecilia

Weight /

Resistance

Level

Weight (lbs)

Reps for 1

Minute or

Fatigue

Ht Rate Pre

Stress

Ht Rate at Peak /

Fatigue

Ht Rate Post

Stress

1 Minute

Ht Rate Post

Stress

5 Minutes

Low 3.0 37 76 104 80 74

Medium 8.0 15 76 91 80 76

High 15.0 8 76 112 89 79

Average 8.7 20.0 76.0 102.3 83.0 76.3

Figure 1: Ben Heart Rate vs. Level (Condition)

Ben recovers his heart rate faster in low resistance/weight (BLUE line) after a minute of rest.

In average, his heart rate recovers fast at 5 minutes of rest.

60

70

80

90

100

110

120

130

Ht Rate Pre Stress Ht Rate at Peak / Fatigue Ht Rate Post Stress1 Minute

Ht Rate Post Stress5 Minutes

He

art

Rat

e

Condition

Low Medium High Average

Ben Heart Rate Graph

Figure 2: Arvin Heart Rate vs. Level (Condition)

The graph shows: In low resistance/weight (BLUE line), Arvin recovers his heart rate faster compared to medium (RED line) and high (GREEN line) resistance/weight.

After post stress 5 minutes, his heart rate after lifting heavy weight object is lower than the heart rate during pre-stress.

In average, Arvin’s heart rate increases tremendously after peak activity and recovers his heart rate very quickly after post stress 5 minutes.

70

80

90

100

110

120

130

140

Heart Rate Pre Stress Heart Rate at Peak Heart Rate Post Stress 1Minute

Heart Rate Post Stress 5Minutes

Low

Medium

High

Average

Arvin Heart Rate Graph

Level

Heart Rate

Figure 3: Cecilia Heart Rate vs Levels (Condition)

The graph shows that Cecilia’s heart rate increases rapidly after doing minimal exercise, especially lifting a heavy-weight object.

70

75

80

85

90

95

100

105

110

115

Ht Rate Pre Stress Ht Rate at Peak / Fatigue Ht Rate Post Stress1 Minute

Ht Rate Post Stress5 Minutes

Low

Medium

High

Average

Cecilia Heart Rate Graph

Heart Rate

Levels

Figure 4: Three students’ weight-lifting Repetitions vs. Weight of the object

Cecilia (GREEN line): Correlation = -1; association = strong, as the weight increases, the number of weight-lifting repetitions decreases very steeply.

Arvin (RED line): Correlation = -1; association = very strong, as the weight increases, the number of weight-lifting repetitions decreases very steadily.

Ben (BLUE line): Correlation = -1; association = fair, as the weight increases, the number of weight-lifting repetitions decreases somewhat steeply.

0

10

20

30

40

50

60

70

80

90

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0

Re

pe

titi

on

s p

er

Min

ute

Resistance in Pounds

Three Person Reps vs Weight (lbs)

Ben Arvin Cecilia Linear (Ben) Linear (Arvin) Linear (Cecilia)

Figure 5: Cecilia Reps for 1 Minute or Fatigue

Correlation = -1; association = strong, as the weight increases, the number of weight-lifting repetitions decreases very steeply.

0

5

10

15

20

25

30

35

40

0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0

N

u

m

b

e

r

o

f

R

e

p

s

Weight (lbs)

Cecilia Reps for 1 Minute or Fatigue

Reps for 1 Minute or Fatigue

Linear (Reps for 1 Minute or Fatigue)

Figure 6: Arvin Reps for 1Minute or Fatigue

Correlation = -1; association = strong, as the weight increases, the number of weight-lifting repetitions decreases somewhat steadily.

0

5

10

15

20

25

30

35

40

45

50

0 5 10 15 20 25 30 35

N

u

m

b

e

r

o

f

R

e

p

s

Weight (lbs)

Arvin Reps For 1 Minute or Fatigue

Reps For 1 Minute or Fatigue

Linear (Reps For 1 Minute or Fatigue)

Figure 7: Ben Reps for 1 Minute or Fatigue

Correlation = -1; association = fair, as the weight increases, the number of weight-lifting repetitions decreases somewhat steeply.

0

10

20

30

40

50

60

70

80

90

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0

Nu

mb

er

of

Re

pe

titi

on

s

Weight (lbs)

Ben Reps for 1 Minute or Fatigue

Reps for 1 Minute or Fatigue Linear (Reps for 1 Minute or Fatigue)

Figure 8: Heart Rate Recovery (low weight)

Arvin (RED) recovers his heart rate more steadily than Cecilia (GREEN) and Ben (BLUE).

After 5 minutes (post stress), Arvin and Cecilia’s heart rates were lower than the pre stress.

Ben and Cecilia’s heart rates increase more rapid than Arvin after doing minimal exercise.

Cecilia recovers her heart rate faster than Ben and Arvin.

Ben

Arvin

Cecilia

40

50

60

70

80

90

100

110

Ht Rate PreStress Ht Rate at Peak /

Fatigue Ht Rate PostStress

1 MinuteHt Rate Post

Stress5 Minutes

Heart Rate

Stages

Heart Rate Recovery ( Low Weight)

Ben

Arvin

Cecilia

Figure 9: Heart Rate Recovery (Medium Weight)

Arvin (RED) recovers his heart rate faster than Ben (BLUE) and Cecilia (GREEN).

At post stress 5 minutes, Arvin’s heart rate is lower than the pre stress heart rate compared to Cecilia and Ben.

Ben

Arvin

Cecilia

40

50

60

70

80

90

100

110

120

130

140

Ht Rate Pre StressHt Rate at Peak /

Fatigue Ht Rate Post Stress1 Minute Ht Rate Post Stress

5 Minutes

Ben

Arvin

Cecilia

Stages

Heart Rate

Figure 10: Heart Rate Recovery (Heavy Weight)

The heart rates of Ben (BLUE), Arvin (RED), and Cecilia (CECILIA) after lifting the heaviest weight increase rapidly and drop steeply during 1 minute peak activity.

After 5 minutes, Ben and Arvin’s peak stress 5 minutes heart rate recoveries are lower than their heart rate on pre-stress compared to Cecilia’s.

Ben

Arvin

Cecilia

40

50

60

70

80

90

100

110

120

130

140

Ht Rate Pre StressHt Rate at Peak /

Fatigue Ht Rate Post Stress1 Minute Ht Rate Post Stress

5 Minutes

Ben

Arvin

Cecilia

Heart Rate

Stages

Analysis / Discussion:

In this data, we learned that as we increase the activity of our muscles by lifting weights for a tremendous amount of repetitions and adding more weight on the object, our heart rate increase more than the pre stress (resting level).

The figures shown above show the graphs of Heart Rate vs. Level (Pre-stress, Peak activity, Post stress 1 minute/5 minutes); Weight-lifting Repetitions vs. Weight of the object; Reps for 1 Minute; and Heart Rate Recovery (Low, Medium, High Weight)

We have validated that there is a correlation between the body built and ability to lift an object (low, medium, high weight). For example, in this lab activity, Ben, who was the biggest/more muscle-built (195 lbs) person in our group, carried heavier object than Arvin (140 lbs) and Cecilia (112 lbs).

Our group also validated that as we increased the amount of activity we did, which fatigued our muscles quicker, our heart rate increased as well. The correlation of the data in Figure 4 supports our hypothesis because as the weight of the object increases, the number of weight-lifting repetitions decreases steeply.

Conclusions / Further Considerations:

Through this lab about muscle fatigues, we are now becoming more familiar with the effects of an activity on a human’s heart rate. In addition, we also have acquired further knowledge about the different levels of conditions of the heart rate: pre stress, peak activity, post stress 1 minute/5 minutes.

We suggest those women/men, who consider becoming physically fit (athletic), should do more aerobic/cardio exercises and lifting light-weight exercise equipment and consider more repetitions to increase the endurance or stamina of the heart.

In addition, we also consider those men, who want to gain bigger muscles in order to carry heavier weight, should consider lifting heavy weight equipment but less repetitions and no prolonged activity to avoid muscle fatigue.

Finding:

Researchers indicate that “many athletes have pulse rates in the 40 - 60 range, depending on how fit they are.” http://www.nemahealth.org/programs/healthcare/heart_rate_pulse.htm#3

Researchers point out that “a Resting Heart Rate anywhere in the range of 60 - 90 is considered in the normal range.” http://www.nemahealth.org/programs/healthcare/heart_rate_pulse.htm#3