Exploring the Effects Exploring the Effects of Exercise on of Exercise on RespirationRespiration

Lesson Prep: Using Lesson Prep: Using What’s Already ThereWhat’s Already There

Internet provides: Internet provides: Opportunities for networkingOpportunities for networking Useful teaching supplements (and some not so useful Useful teaching supplements (and some not so useful

ones)ones) Lesson plans, assessment ideas, lab ideas, opportunities Lesson plans, assessment ideas, lab ideas, opportunities

for collaboration with colleaguesfor collaboration with colleagues

Collaboration:Collaboration: Increases lesson effectivenessIncreases lesson effectiveness Enhances communication with students (and Enhances communication with students (and

colleagues)colleagues) Ultimately decreases workload (don’t reinvent the Ultimately decreases workload (don’t reinvent the

wheel)wheel)

Focus QuestionsFocus Questions

What are the basic components of What are the basic components of the human respiratory system the human respiratory system (lecture)?(lecture)?

How does exercise affect the rate How does exercise affect the rate of external and internal of external and internal respiration (lab)?respiration (lab)?

Human Respiration Human Respiration Entrance QuestionEntrance Question

Why do we need to respire (aka breathe)?

A.To take in OxygenB.To get rid of CO2

C.To replenish our cells’ energyi. The brain can survive ~6 min w/o blood (aka O2

supply and CO2 removal)ii. Sore muscles = due to lack of O2 supply

D.To maintain blood pHi. Large changes in pH can kill cellsii. CO2 has a big effect on blood pH

Human RespirationHuman Respiration

http://www.youtube.com/watch?NR=1&v=HiT621PrrO0

http://www.youtube.com/watch?v=Lygr-http://www.youtube.com/watch?v=Lygr-rAtHgA&NR=1rAtHgA&NR=1 Does breathing = respiration?Does breathing = respiration?

Why/why not?Why/why not?

http://www.youtube.com/watch?v=xmceP5z6qsAhttp://www.youtube.com/watch?v=xmceP5z6qsA Do we always fill our lungs to capacity?Do we always fill our lungs to capacity?

Let’s ExerciseLet’s Exercise

Supplies:Supplies: Each team needsEach team needs

1 small beaker about ½ full of DI water1 small beaker about ½ full of DI water pH meter or 5 pH stripspH meter or 5 pH strips 1 straw (DO NOT SET THIS ON YOUR COUNTERTOP AS 1 straw (DO NOT SET THIS ON YOUR COUNTERTOP AS

YOU WILL BE BLOWING INTO IT)YOU WILL BE BLOWING INTO IT) 1 stopwatch1 stopwatch

Follow Lab InstructionsFollow Lab Instructions Pay attention to the TYPE of breathing you notice as Pay attention to the TYPE of breathing you notice as

well (abdominal or thoracic?)well (abdominal or thoracic?) PLEASE DON’T OVER-EXERT YOURSELVES, THIS PLEASE DON’T OVER-EXERT YOURSELVES, THIS

IS NOT P90X!!!IS NOT P90X!!!

Human RespirationHuman RespirationExit QuestionExit Question

Based on what you observed with Based on what you observed with breathing rate and CObreathing rate and CO22, how do you , how do you

think exercise affects cellular think exercise affects cellular respiration?respiration?

Fun Facts For TeachingFun Facts For Teaching

There Are Major Links Between the CardioVascular System There Are Major Links Between the CardioVascular System and Respirationand Respiration

Increase in respiration ties to increase in pulse rate, BP, Increase in respiration ties to increase in pulse rate, BP, and cardiac output (the amount of blood flowing through the and cardiac output (the amount of blood flowing through the body)body)

Caffeine increases pulse rate/blood pressure = increases Caffeine increases pulse rate/blood pressure = increases respiratory raterespiratory rate

Why would this help you feel more alert?Why would this help you feel more alert?

Living at high altitudes increases INTERNAL respirationLiving at high altitudes increases INTERNAL respiration

An athlete typicallyAn athlete typically Has a slower stronger heartbeatHas a slower stronger heartbeat Has a lower blood pressure due to widened vesselsHas a lower blood pressure due to widened vessels Breathes slower and deeperBreathes slower and deeper

= more efficient = more efficient Has a shorter recovery period than a non-athlete breathingHas a shorter recovery period than a non-athlete breathing