Lab report biology

Running Head: LAB REPORT 1
Lab report
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Lab Report
Effects of exercises on heart rate and blood pressure
What happens to the heart rate and blood pressure during exercise and at rest?
During rest, the heartbeat ranges around 70-80 per minute, and after exercise, the heart
rate elevates than normal. Besides, blood pressure increases during exercise.
After the experiment, the heart rate, as well as the blood pressure, should be higher than the
typical ranges.
i. Give three people labels indicated ABC
ii. The three people should be put to rest for at least minutes
iii. Measure the blood pressure of all the subjects as well as listen to their heart rates using a
iv. Subject A and B to ride bicycles for at least five minutes
v. Measure the blood pressure of all the subjects including subject C that was at rest using
the sphygmomanometer and record.
vi. Use the stethoscope to listen to the heart rates of all subjects, A, B and C, and record.
vii. Let subject A continue riding the bicycle and B to rest for five minutes.
viii. After five minutes, stop subject A and measure his blood pressure using the
ix. Measure the blood pressure of subjects B and C as well using the sphygmomanometer
and record.
x. Using the stethoscope, listen to the heart rates of all the subjects and record the number of
heartbeats per minute.
After bicycle riding, the subjects showed an increased breathing rate.
i. Subject labeled A had a blood pressure of 115/76, B- 121/79, and C- 115/78.
ii. Subject A, B, and C had heartbeats of 65, 71 and 68 respectively after resting for
iii. After riding the bicycle, A had a blood pressure of 130/85, B 136/88, and C had 115/78.
Heartbeats were recorded 177, 165 and 68 respectively.
iv. After five additional minutes riding, subject A measures a blood pressure of 135/87, and
heart rate of 177.
v. Subject B and C after a five-minute rest measure a blood pressure of 108/70 and 115/78
vi. The heart beats counted 179, 66 and 65 respectively.
Exercises increase the involuntary biological activities of the body, such as respiration.
During a vigorous exercise, the body needs more oxygen to convert biochemical energy from
body nutrients into energy and waste products. The energy helps the body to function at optimum
level. As a result, heart rate, as well as blood pressure, increases significantly to cater for the
necessary metabolic activities of the body (Zhang, Pi, & Liu, 2015). In the experiment, three
people are used to ensure efficiency of results. Subject A and B are used to determine the after
effects of exercises to the body. Subject A was used as a control, or reference point for the
All the subjects were put to rest for at least 25 minutes to ensure that the results were
accurate if the subjects were from a strenuous activity before the time of the experiment, the
results could be wrong and inaccurate (Kokkinos, 2014). All the subjects had normal blood
pressure and heart rates since the body could maintain its activities without any strain.
After riding the bicycle, the heart rates and blood pressure of subject A and B rose
significantly to 130/85, 136/88, with heartbeats of 177, 165 respectively. The increase was
marked by the increase of body activities and respiration. The body needs more oxygen to
convert body nutrients to ATP, (energy), thus increased blood pressure and heartbeats. This
facilitates the transportation of more oxygen and other nutrients to respiratory sites as well as
excreting metabolic wastes from cells (White, & Raven, 2014). After rest, subject B shows a
sharp drop in the blood pressure and heart rate because the body is returning to normal biological
activities (Kokkinos, 2014). Subject C shows constant blood pressure and heart beats because he
was at rest all throughout the experiment. At the end of the experiment, subject A is the only one
with high blood pressure and heart rate because he continued with the exercise.
In sum, body activities determine the heart rate and blood pressure of an individual. At rest, the
heart rate and blood pressure are always constant. During exercise, the blood pressure and heart
rate increases. After exercise, blood pressure and heart rate drop sharply because the body is
recovering to normal.
Kokkinos, P. (2014). Cardiorespiratory fitness, exercise, and blood pressure. Hypertension,
64(6), 1160-1164.
White, D. W., & Raven, P. B. (2014). Autonomic neural control of heart rate during dynamic
exercise: revisited. The Journal of physiology, 592(12), 2491-2500.
Zhang, Z., Pi, Z., & Liu, B. (2015). TROIKA: A general framework for heart rate monitoring
using wrist-type photoplethysmographic signals during intensive physical exercise. IEEE
Transactions on Biomedical Engineering, 62(2), 522-531.

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