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: 3
Grade code: 3.2.1.LI.2
Strand code: 2
Sub-strand code: 1
Content standard code: 3.2.1.CS.1
Indicator code: 3.2.1.LI.2
Theme: Physical Education
Subtheme: Physical Activity for Healthy Living
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This lesson introduces the core concept of health-related physical fitness, a vital topic for maintaining a healthy and productive life. In Ghana today, as lifestyles become more sedentary, understanding how to stay fit is crucial for preventing non-communicable diseases like hypertension, diabetes, and heart disease, which are on the rise. This knowledge is not just for athletes; it is for every student, their families, and the community. By mastering these concepts, you will be equipped to make informed decisions about your own health, understand the physical demands of various daily activities (from farming to office work), and prepare effectively for your WASSCE examinations.
Starter Activity (5 minutes) *Teacher asks:* "What does it mean to be 'fit'? Think about a farmer in your village and an office worker in Accra. Are they both fit? Why or why not?" *(This will elicit various answers related to strength, energy, and endurance, leading into the formal definitions.)*
A. Fundamental Definitions Physical Activity: Any bodily movement produced by skeletal muscles that requires energy expenditure. In simple terms: It's any movement you do. Examples: Walking to the bus stop, sweeping the compound, dancing at a festival, weeding the garden. Physical Fitness: The ability to carry out daily tasks with vigour and alertness, without undue fatigue, and with ample energy to enjoy leisure-time pursuits and meet unexpected emergencies. In simple terms: Having enough energy and ability to do what you need and want to do each day. Physical fitness is a result of regular physical activity. It is divided into two main categories: Health-Related Fitness and Skill-Related Fitness. Today, our focus is on Health-Related Fitness. B. The Five Components of Health-Related Fitness (HRF)
Health-related fitness components are those that are directly associated with good health and disease prevention. They are essential for everyone, regardless of athletic ability. Cardiorespiratory Endurance (or Cardiovascular Endurance) Definition: The ability of the heart, lungs, and blood vessels to work together efficiently to supply oxygenated blood to the working muscles during sustained physical activity. Why it's important: Strengthens the heart muscle, making it more efficient at pumping blood. Lowers resting heart rate and blood pressure. Reduces the risk of heart disease, stroke, and type 2 diabetes. Helps with weight management by burning a high number of calories. Increases your overall stamina and reduces fatigue during the day. Ghanaian Context Examples: Playing a full 90-minute game of football ('gala'). Continuous dancing to high-tempo music like Azonto or Agbadza for 15-20 minutes. Brisk walking or jogging from home to the market. Riding a bicycle over a long distance. Vigorous swimming at the beach or pool. Muscular Strength Definition: The maximum amount of force a muscle or muscle group can exert against a resistance in a single effort. Why it's important: Makes daily tasks like lifting and carrying easier (e.g., carrying a bucket of water, a bag of cement, or your school bag). Strengthens bones, increasing bone density and reducing the risk of osteoporosis later in life. Boosts metabolism, as muscle tissue burns more calories at rest than fat tissue. Improves posture and reduces the risk of back injuries. Ghanaian Context Examples: Lifting a heavy sack of maize or cassava. Pushing a stalled vehicle ('trotro' or taxi). Pounding fufu or banku with a pestle. Performing a single, maximum lift in a gym (e.g., bench press). Muscular Endurance Definition: The ability of a muscle or muscle group to perform repeated contractions against a resistance or to sustain a contraction for an extended period. Why it's important: Allows you to perform repetitive tasks for longer without getting tired. Crucial for good posture, as core muscles need to work for long periods to keep you upright. Reduces fatigue and improves performance in sports and daily activities. Ghanaian Context Examples: Weeding a large portion of a farm for several hours. Continuously scrubbing clothes during hand washing. Carrying a heavy load on your head over a long distance. Performing many repetitions of an exercise, like push-ups or sit-ups. Flexibility Definition: The range of motion available at a joint or series of joints. Why it's important: Reduces the risk of injury, especially muscle strains and sprains. Improves posture and body alignment. Can help alleviate muscle soreness and back pain. Allows for more efficient and free movement in daily life and sports. Ghanaian Context Examples: Bending down to pick up something from the floor without straining your back. Reaching up to a high shelf to get an item. The fluid movements involved in traditional dances like the Adowa. Performing daily stretches before or after other activities. Body Composition Definition: The relative proportion of fat mass (fat tissue) to lean body mass (muscles, bones, water, organs) in the body. Why it's important: A high percentage of body fat is linked to an increased risk of serious health problems, including heart disease, hypertension, type 2 diabetes, and certain cancers. A healthy body composition is a better indicator of health than body weight alone. For example, a muscular person might weigh more than a person with more fat, but be healthier. How it's improved: Body composition is improved by a combination of activities that build muscle (strength training) and burn fat (cardiorespiratory exercise), along with a balanced diet. Ghanaian Context Examples: A person who engages in regular farming (cardio, strength, endurance) and eats a balanced diet of local foods (yam, plantain, vegetables, lean protein) will likely have a healthier body composition than a person with a sedentary office job who eats a lot of fried, processed foods.
C. Distinguishing from Skill-Related Fitness