'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.
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.
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.
Equipment/Space Needed:
Instructions:
Stretches:
After the warm-up, get the students to perform dynamic stretches targeting the following muscle groups in preparation for the activities:
Equipment/Space Needed:
Preparation:
Instructions:
Equipment/Space Needed:
Instructions:
Get the students to perform static stretches targeting the following muscle groups that were worked during the activities:
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.
Junior Cycle Science |
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Junior Cycle Short Course in Physical Education (2016) |
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Junior Cycle Syllabus in Physical Education (2003) |
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