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The Effects of Exercise on the Heart and Blood Vessels

'The Effects of Exercise on the Heart and Blood Vessels' lesson plan kit is part of the Strength in Science project developed in collaboration between researchers, science teachers, PE teachers, fitness instructors, and Junior Cycle students.

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In this short video, we meet NUI Galway researcher and vascular surgeon, Ms. Niamh Hynes, who explains the science behind how exercise is good for your heart and blood vessels. It includes suggestions for what types of exercises are particularly good for these areas. Also, we learn about the latest work in medical devices to support these parts of your body.

Background
Keywords
Exercises
Facts
Curriculum Links

How Does Exercise Affect Heart and Blood Vessels?

Your  blood  vessels  transport  red  blood  cells  with  oxygen to important organs in your body. The lining of these  blood  vessels,  known  as  your  endothelium,  can  be damaged when your blood pressure is too high. This higher force causes what is called ‘shear stress’ which can  damage  the  delicate  insides  of  the  blood  vessels.  The  resulting  tears  to  the  lining  can  weaken  the  blood  vessels, or can become pockets where plaque can start to build. If a blood vessel is weakened too much, a bulge can  form  called  an  aneurysm.  If  an  aneurysm  bursts  it  can cause serious internal bleeding.

Exercise makes your heart stronger to pump more blood with less effort. Exercise also signals the  release of nitric oxide by the cells lining  the  insides  of  the  blood  vessels  (endothelial  cells). This  causes the cells that form the blood vessel walls (smooth  muscle  cells) to stay relaxed. The relaxed  smooth muscle cells widen your blood vessels which lowers your blood pressure.

How are Irish Researchers Developing Treatments for Diseases of the Blood Vessels?


Ms. Niamh Hynes is a vascular surgeon who is developing new ways to image blood vessels in order to detect and treat vascular diseases. The term ‘vascular’ refers to the blood vessels outside of the heart and brain. A vascular surgeon, like Ms. Hynes, is like a plumber for the human body! A patient with an aneurysm can be treated by reinforcing the blood vessel wall with a medical device called a stent. Ms. Hynes and her research group are developing a new imaging technique to measure the ability of a  patient’s blood vessels to expand and contract with changes in pressure. This technique will help surgeons determine what stent is the best fit to use based on a patient’s individual needs.

 

 

Artery   |    Vein    |    Capillary   |    Aneurysm


Activity:

Warm Up
Activity One
Activity Two
Cool-Down

Warm-Up Your Heart

Equipment/Space Needed:

  • Large Hall

Instructions:

  • The teacher stands at the front and facing the class.
  • The teacher assigns movements to numbers that will be called out.

    For example:
  1. Sprint
  2. Jump
  3. Touch the ground
  • Everyone jogs around the hall.
  • The teacher calls a number and everyone does the corresponding movement for the number called. For example, the teacher calls out “1” and everyone sprints.
  • This is repeated with the teacher calling out the different numbers for about a few minutes until the class is warmed up.

Stretches:

After the warm-up, get the students to perform dynamic stretches targeting the following muscle groups in preparation for the activities:

  • Hamstrings
  • Quadriceps
  • Gastrocnemius and soleus (calves)
  • Deltoids (shoulders)
  • Biceps and triceps (upper arms)
  • Trapezius (upper back)
  • Pectoralis major and minor (chest)

 

 

Bean Bags and Blood Vessels

Equipment/Space Needed:

  • Large hall
  • A sheet of paper with “HEART” written on it (per team)
  • A sheet of paper with “BODY” written on it (per team)
  • A sheet of paper with “LUNGS” written on it (per team)
  • Tape or blue tack
  • 2 baskets (per team), about the size of a typical laundry basket
  • 5-10 blue  bean  bags  (per  team)  which  represent  carbon  dioxide  in  the  blood
  • 5-10 red bean bags (per team) which represent oxygen in the blood
  • Note: Bean bags can be substituted with balls or even crumpled pieces of red and blue paper.

Preparation:

  • Secure the sheet of paper with “BODY” written on it to the first basket using tape or blue tack.
  • Put the blue bean bags into the “BODY” basket.
  • Secure the sheet of paper with “LUNGS” written on it to the second basket using tape or blue tack.
  • Put the red bean bags into the “LUNGS” basket.
  • Put the “BODY” and “LUNGS” baskets on one side of the room.
  • On the other side of the room, secure the sheet of paper with “HEART” written on it to the wall using tape or blue tack.

Instructions:

  • Students are grouped into teams of 4 (or a number divisible by 4).
  • Half the students on a team line up on one side of the hall, and the other half line up on the other side of the hall.
  • The teacher says “Ready, steady, go”.
  • Student 1 from each team takes a blue bean bag (carbon dioxide) from the “BODY”  basket.  (Student 1  represents  blood  carrying  carbon  dioxide  and the sprinting path a vein from the body to the heart).
  • Student 1 sprints across to the other side of the room where a teammate, Student 2, is waiting with his/her hand on the “HEART” sign that is taped to the wall.
  • Student 1 hands over the blue bean bag to Student 2.
  • Student 2 releases his/her hand from the “HEART” sign and sprints across to the other side of the room. (Student 2 represents blood carrying carbon dioxide and the sprinting path the pulmonary artery from the heart to the lungs).
  • Note: Student 2 can only release his/her hand from the “HEART” sign and start sprinting when he/she has the blue bean bag.
  • Student 2 puts the blue bean bag into the “LUNGS” basket.
  • Student 3 grabs a red bean bag from the “LUNGS” basket.
  • Note: Student 3 can only grab a red bean bag from the “LUNGS” basket after Student 2 has released the blue bean bag.
  • Student 3 sprints across to the other side of the room where a teammate, Student 4, is waiting with his/her hand on the “HEART” sign that is taped to the wall. (Student 3 represents blood carrying oxygen and the sprinting path the pulmonary vein from the lungs to the heart.)
  • Student 4 releases his/her hand from the “HEART” sign and sprints across to the other side of the room. (Student 4 represents blood carrying oxygen and the sprinting path the aorta from the heart to the body).
  • Student 4 puts the red bean bag into the “BODY” basket.
  • The sequence is repeated until the “BODY” basket is full of the red  bean bags and the “LUNGS” basket is full of blue bean bags.
  • Whatever  team  fills  the  “BODY”  basket  with  the red  bean  bags  and“LUNGS” basket with the blue bean bags first wins.

 

 

 

Oxygen Tag

Equipment/Space Needed:

  • Large hall
  • 8-10 blue  bean  bags  (per  team)  which  represent  carbon  dioxide  in  the  blood
  • 8-10 red bean bags (per team) which represent oxygen in the blood
  • Note: Bean bags can be substituted with balls or even crumpled pieces of red and blue paper.

 Instructions:

  • The  teacher  divides  the  class  into  three  teams  with  equal  numbers  of  students:

    1. Oxygens
    2. Carbon Dioxides
    3. Cells

  • Each student from the Oxygens team gets a red bean bag.
  • Each student from the Carbon Dioxides team gets a blue bean bag.
  • The teacher says “Ready, steady, go”!
  • The students on the Carbon Dioxides team try to tag the students on the Cells team.
  • If a student from the Cells team gets tagged by a student from the Carbon Dioxides team, they have to stop running and stay on the spot they were tagged, i.e. the student is “frozen”.
  • The frozen student cannot move unless they are tagged by a student from the Oxygens team.
  • If the Carbon Dioxides team manages to freeze all of the students on the Cells team at the same time, then they are the winners.
  • If  the  Oxygens  team  manages  to  prevent  all  of  the  students  on  the  Cells  team from being frozen at the same time after a predetermined amount of time, then they are the winners.
  • Once  the  winning  team  is  determined,  have  the  students  change  teams  and play again. For example, students who were on the Cells team switch to the Carbon Dioxides team; students who were on the Carbon Dioxides team switch to the Oxygens team; and students who were on the Oxygens team switch to the Cells team.

Stretches

Get  the  students  to  perform  static  stretches targeting  the  following  muscle  groups that were worked during the activities:

  • Hamstrings
  • Quadriceps
  • Gastrocnemius and soleus (calves)
  • Deltoids (shoulders)•Biceps and triceps (upper arms)
  • Trapezius (upper back)
  • Pectoralis major and minor (chest)

Facts about Cardiovascular Diseases and MedTech in Ireland

  • Ireland is the second largest exporter of MedTech products in Europe.
  • Ireland’s MedTech sector employs 29,000 people across 450 companies.
  • Ireland has the highest number of people working in the MedTech industry than in any other European country, per head of population.
  • 13 of the top 15 MedTech companies have operations in Ireland.
  • Galway employs one third of the country’s MedTech employees.

Cardiovascular disease is the most common cause of death in Ireland, accounting for 36% of all deaths. 22% of premature deaths (under age 65) are from cardiovascular disease.

80%  of  global  stent  production  is  carried  out in Ireland. The two  largest  employers  within  the  Galway  region  are  Medtronic  and  Boston  Scientific,  employing  over  4,000  individuals. Due  to  the  influential  presence  of  these  two  companies,  many  companies  in  Galway  are  involved    in    cardiology-related    devices,    particularly    drug-eluting    stents    and    their    components,  such  as  guide  wires  and  balloon  catheters.  This  has  resulted  in  Galway  becoming recognised for its specialisation in coronary devices, producing the highest levels of R&D and High Tech Innovation worldwide.

 

Students will:

  • Watch a video discussing:

    • How high blood pressure damages blood vessels.
    • Current Irish research in treating diseases of the blood vessels.
    • How exercise makes your heart stronger to pump more blood with less effort.

  • Perform exercises to keep the heart and blood vessels healthy.

Students should be able to:   

  1. Run at a steady pace, suitable to level of fitness, for a set length of time.
  2. Display an appreciation and enjoyment of athletics.
  3. Demonstrate an understanding of the effects of exercise on the body.
  4. Show an understanding of the role of physical activity in establishing and maintaining health.
  5. Plan for and participate in regular physical activity.
  6. Understand the difference between an artery, vein and capillary.
  7. Understand how blood travels to and from the heart and lungs.
  8. Know what an aneurysm is.
  9. Understand how high blood pressure damages blood vessels.
  10. Understand  how  exercise  makes  the  heart  stronger  to  pump  more  blood  with less effort.

Curriculum Links:

Junior Cycle Science
  • The Nature of Science (LO 1 and 10)

  • Biological World (LO 4,6, and 9)

Junior Cycle Short Course in Physical Education (2016)

  • Physical activity for health and wellbeing

  • Individual and team challenges

Junior Cycle Syllabus in Physical Education (2003)

  • Athletics - Running

  • Health-related activity

 

 

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