The document discusses the muscular system and provides information on: 1. The immediate and long-term effects of exercise on muscles, including increased muscle mass, strength, endurance and power from long-term exercise and the build up of lactic acid from immediate exercise. 2. Potential soft tissue injuries to muscles like pulls, tears, strains and sprains and their treatment of RICE (Rest, Ice, Compression, Elevation). 3. How drugs, diet and rest can impact the muscular system, with drugs like anabolic steroids building muscle and strength, diet providing protein for repair after exercise, and rest repairing and adapting muscles.

1. Muscular System Revision 2011

2. What do I need to know? You need to be able to: Explain the immediate and long term effects of exercise on the muscular system Describe potential injuries to the muscular system Understand how diet, rest and drugs can impact on the muscular system. Names of major muscle groups. Actions of major muscles (use textbook).

3. 1. Immediate and Long term effects Long Term Effects of Exercise Immediate Effects of Exercise

4. 1. Immediate and Long term effects Muscle hypertrophy (increase muscle mass) can lead to: Increase in strength Increase endurance Increase power Improved posture Build up of lactic acid (cramp) Can you explain why? Long Term Effects of Exercise (regular training) Immediate Effects of Exercise

5. 1. Immediate and Long term effects Muscle hypertrophy (increase muscle mass) can lead to: Increase in strength Increase endurance Increase power Improved posture Build up of lactic acid (cramp) When aerobic respiration is know longer possible due to high demand of Oxygen; Anaerobic respiration must occur to produce energy. One waste product is LA. Long Term Effects of Exercise (regular training) Immediate Effects of Exercise

6. 2. Soft Tissue injuries to Muscles ? Pulls Tears Strains Sprains This is Skeletal!! Damage to a ligament e.g. Twisted ankle

7. 2. Soft Tissue injuries to Muscles ? Pulls Tears Strains Sprains This is Skeletal!! Damage to a ligament e.g. Twisted ankle WHATS THE TREATMENT? WHAT HAPPENS TO THE MUSCLES WHEN YOU STOP REGULAR EXERCISE?

8. 3.Can you remember treatment for muscular injuries: tears pulls strains Edexcel pg160 E C I R

9. 3. Effects Rest, Diet & Drugs on MS. Drugs Diet Rest

10. 3. Effects Rest, Diet & Drugs on MS. Anabolic Steroids to… - To build muscle -Build strength -Speed up hypertrophy -Speed up recovery Explain how these effects improve performance. Protein to repair & adapt within two hours after exerise. Name two sports performers for whom protein is essential . Repair Adapt Can you explain how? Drugs Diet Rest