- Slides: 11
Exercise – Too little or Too much? • Why exercise is good for us. • Correlation and Causation • The effects of Exercise on the Immune System Key Terms: Correlation, Causation, Evidence, Diabetes, Obesity, Immunity.
Why is exercise good for us?
Why is exercise good for us? 1) 2) 3) 4) 5) Builds Muscle Helps control body mass Strengthens heart muscle Causes release of Endorphins Helps prevent CHD and Type 2 Diabetes
Why is exercise good for us? 1) 2) 3) 4) 5) Builds Muscle Helps control body mass Strengthens heart muscle Causes release of Endorphins Helps prevent CHD and Type 2 Diabetes Does it? What evidence do we have?
Correlation or Causation? • There is a Correlation, but is it a Cause? e. g. Increased risk of CHD – could it be the type of food consumed by a person rather than a lack of exercise? Increased risk of Diabetes Type 2 – Is it caused by a lack of exercise or is that Obesity results from a lack of exercise and then obesity increases the risk of Type 2 Diabetes?
Correlation or Causation?
Can you have too much exercise?
Can you have too much exercise? • Yes !! • There is a correlation between heavy training in athletes and an increase in minor respiratory infections. • Why?
• A link between a Lack of Exercise and Diabetes Type 2? (Use Page 169) 1. Summarise the evidence for a link between a Lack of Exercise and Diabetes Type 2 2. Is this evidence reliable? 3. What conclusions have been drawn? 4. What is meant by a ‘Longitudinal Study’? • Use page 170 – The Effect of Intensive Exercise 1. Summarise the effect of Intensive exercise on the immune system. 2. Use the data table on pg 171 to answer Qu. 1 & 2 3. Read and highlight article ‘Couch potato’ and revision notes on the effect of exercise including How to Analyse Data. 4. Use this and your notes and book to work through Activity 7. 19 ‘Too much or Too Little’ data analysis.