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Benefits of Exercise Lesson Objectives 1.To describe some of the effects of exercise on the body. 2.To understand the link between physical activity levels and the energy requirements of the body. Benefits to the Heart • Increase in heart muscle. • More powerful heart beat. • More blood pumped around the body. • Reduced blood pressure. • Decrease in resting heart Rate. Pulse rate Healthy adults pulse rate = 60-80 beats per minute. ( infants and children can be much faster ) HIGHER than usual : exercise, panic attack, anxiety or a heart disorder. WEAKER than usual :low blood pressure, shock or a heart disorder. Benefits to the lungs: • Better oxygen uptake • Bigger lung volume Muscular: • Bigger muscles • Muscles store more energy. Other Benefits: • Weight loss • Better Immune system • Reduced risk of heart disease, heart attacks and strokes. • Psychological benefits. When does the body need to release more energy? not very active = low energy requirements very active = high energy requirements During which type of activities is the rate of aerobic respiration higher? Effect of Exercise on the Body • Muscles are made of protein fibres. • Muscle fibres need a lot of energy to contract. • Energy is released by aerobic respiration. Aerobic respiration: word equation glucose oxygen carbon dioxide water energy glucose oxygen carbon dioxide water energy Pulse Rate Experiment 1. Measure your resting pulse rate. This is how many times your heart beats per minute. Record this number. 2. Exercise (Star jumps) for 5 mins. 3. Measure your pulse rate again. Record this. 4. Continue to measure your pulse rate every minute until it is back to your resting rate. 5. Plot your results on a graph, PR against time. Lesson Objectives 1.To describe some of the effects of exercise on the body. 2.To understand the link between physical activity levels and the energy requirements of the body.