Transcript sitting heart rate - Uplift Lee Preparatory

Do Now
1. Which is responsible for dropping off carbon dioxide at the lungs –
systemic or pulmonary circulation?
2. What is a structural difference between arteries and veins? How
does this structural difference affect their function?
3. What are the names of the blood vessels providing blood to the
surface of the heart?
4. Why does your heart beat faster when you exercise?
Heart Rate
• Pulse = rate at which your
heart beats, beats per minute
(BPM)
• Resting pulse – pulse just after
you wake up but before
getting out of bed
• Check your pulse by counting
the beats in a set period of
time (15 seconds) and multiply
by 4
Is there a difference
between sitting heart rate
and standing heart rate?
Create Class Data Table
Student
Standing Heart Rate (group 1)
Sitting Heart Rate (group 2)
Student A
Student B
Student C
Student D
Students randomly assigned to group 1 will record
their standing heart rate.
Students randomly assigned to group 2 will record
their sitting heart rate.
Is there a difference in heart rate when sitting
or standing?
• Randomly divide class into 2 equal sized groups
• Half will remain sitting; half will stand
• Measure pulse for 1 minute
• Record data
What type of statistical
experimental design was
just used?
Analyze the Data
• Completely randomized design
• Create a dotplot
• Calculate the mean pulse rate for each group
Pulse Rate
• Is there evidence that there is a difference between standing and
sitting pulse rates?
• Defend your answer with data
Standing HR
Sitting HR
Is there a difference in heart rate when sitting
or standing?
• Groups will switch (sitting group will stand; standing group will sit)
• Measure pulse for 1 minute
• Record data
What type of statistical
experimental design was
just used?
Create Class Data Table
Student
Standing Heart Rate
(group 1)
Sitting Heart Rate (group
2)
Student A
Student B
Student C
Student D
You will now have 2 numbers per
person.
Difference in Heart Rate
Analyze the Data
• Matched pairs design
• Calculate the difference in pulse rate (standing – sitting) for each person
• Create a dotplot of the differences
• Calculate the mean difference in pulse rate
• Is there evidence that there is a difference between standing and
sitting pulse rates?
• Defend your answer with data
Difference in Pulse Rate
Blood pressure is the
force of blood against
the walls of arteries.
Blood pressure is
recorded as two
numbers—the
systolic pressure (as
the heart beats) over
the diastolic pressure
(as the heart relaxes
between beats).
The average (normal) blood pressure for an adult is
120/80. This number varies by person and it is best
if you know what is *normal* for you, so that you (or
your doctor) recognize when something is not
normal.
We will be
doing a lab
where you will
learn to use a
this device and
check your own
blood pressure.
SPHYGMOMANOMETER
Factors affecting blood pressure: Average is 120/80 (higher
number is the systolic pressure)
Cardiac output =
1.
Cardiac Output
2.
Blood volume (5 liters for avg adult)
3.
Blood Viscosity
stroke volume x
4.
Peripheral Resistance
heart rate
Factors Causing BP
to Rise
Stress
Smoking
Cold Temperatures
Exercise
Caffeine
Certain drugs