Lesson Notes By Weeks and Term v4 - SHS 3
Physical Activity for Healthy Living
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Physical Activity for Healthy Living
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Subject: Physical Education Health Elective
Class: SHS 3
Term: 2nd Term
Week: 4
Grade code: 3.2.1.LI.3
Strand code: 2
Sub-strand code: 1
Content standard code: 3.2.1.CS.1
Indicator code: 3.2.1.LI.3
Theme: Physical Education
Subtheme: Physical Activity for Healthy Living
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This lesson focuses on the practical application of our knowledge about health-related fitness. In Ghana today, we are seeing a rise in lifestyle diseases like hypertension and diabetes, many of which can be prevented or managed through regular physical activity. It is no longer enough to know *that* exercise is good; we must know *how* to design effective activities for ourselves and our families. This lesson will empower you to move from theory to practice by designing simple, effective exercise plans using accessible, everyday activities to improve specific components of health. This skill is vital for your own long-term well-being and for promoting a healthier community.
Before we can design activities, we must deeply understand the building blocks of physical fitness. These are the five health-related components of fitness. Cardiovascular Endurance (or Cardiorespiratory Endurance) What it is: This is the ability of your heart, lungs, and blood vessels to deliver oxygen-rich blood to your working muscles during long periods of physical activity. Think of it as your body's "engine" and its ability to keep running without getting tired quickly. Why it's important: A strong heart pumps more blood with less effort, reducing the risk of heart disease and high blood pressure (hypertension). It increases your energy levels for daily tasks like walking to school, climbing stairs, or playing with friends. It helps in managing weight. Ghanaian Context & Examples: Brisk walking from the trotro station to your house. Jogging along the beach in Accra or around the school field. Playing a full game of football or basketball without becoming breathless too quickly. Vigorous dancing to highlife, hiplife, or azonto music for 15-20 minutes. Playing 'ampe' continuously for several minutes. Muscular Strength What it is: This is the maximum amount of force a muscle or group of muscles can exert in a single effort. It's about how "strong" you are in one go. Why it's important: Makes daily tasks easier, such as lifting a heavy bag of rice, a "Kufuor gallon" of water, or pushing a car. Builds strong bones, which helps prevent osteoporosis later in life. Boosts metabolism, helping with weight management. Ghanaian Context & Examples: Lifting a heavy sack of cassava from the ground. Performing a single push-up or pull-up. Helping to push a stalled vehicle. Lifting weights at a local gym. Muscular Endurance What it is: This is the ability of a muscle or group of muscles to perform repeated contractions against a resistance for an extended period. It's not about how much you can lift once, but how many times you can lift something or how long you can hold a position. Why it's important: Reduces fatigue during long tasks like farming, scrubbing floors, or carrying a baby on your back for a long time. Improves posture and stability. Essential for sports that require repeated movements, like swimming or rowing. Ghanaian Context & Examples: Weeding a farm for an hour. Pounding fufu for an extended period. Performing many push-ups or sit-ups in a row. Carrying groceries from the market back home without stopping multiple times. Flexibility What it is: This is the ability to move your joints through their full range of motion. It's about how well you can bend, stretch, and twist. Why it's important: Reduces the risk of injury during physical activity and daily life. Can help relieve muscle soreness and back pain. Improves posture and balance. Ghanaian Context & Examples: Stretching to pick a mango from a tree. Bending down to touch your toes without bending your knees. Reaching for an item on the top shelf of a cupboard. Performing routine morning stretches after waking up. Body Composition What it is: This refers to the proportion of fat mass to lean mass (muscle, bone, water, organs) in your body. It is not just about your weight on a scale, but what that weight is made of. Why it's important: A high percentage of body fat is linked to an increased risk of diseases like type 2 diabetes, heart disease, and some cancers. A healthy body composition often means having more muscle mass, which boosts metabolism. How to improve it: Body composition is improved by a combination of activities that build muscle (strength training) and burn fat (cardiovascular exercise), along with a balanced diet. Ghanaian Context & Examples: A person who engages in regular brisk walking (cardio) and does bodyweight exercises like squats (strength) will likely improve their body composition by burning fat and building muscle, even if their total weight on the scale doesn't change much. Choosing a balanced meal of banku with plenty of vegetables and fish over just a large portion of banku affects body composition.
Guided Practice (With Solutions)
Here, we will practice the skill of *designing* activities.
Question 1: Your friend, Kojo, wants to start exercising but has very little time. Design one activity to improve his cardiovascular endurance and one activity to improve his muscular strength. Explain your choices.