Unit 1.2.4

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  • Created by: neleanor
  • Created on: 22-04-14 15:56
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  • Unit 1.2.4
    • Immediate effects of exercise
      • Aerobic exercise the blood is able to supply fuel (O2/glycogen) and remove CO2.
      • If demand for O2 is too high to provide enough, lactic acid builds up.
        • Causes aches and cramps.
        • Regular exercise can help muscle scope better.
    • Muscles
      • Two types of muscle contraction:
        • Isotonic: Muscle contraction that results in movement.
        • Isometric: Muscle contraction that result in increased tension, but not movement.
    • Long term effects of exercise
      • Hypertrophy: Increase in muscle size.
      • Stress on muscle causes tiny fibre tears. When tear are rebuilt, they are stronger.
      • Firmer-looking body, Better posture, Stronger tendons, Lower risk of injury.
    • Potential injuries
      • Atrophy: Muscles get weaker when exercise stops.
      • Soft tissue: Strain from over-stretching muscle. Use RICE.
      • Prevention of strains: Warm up (Pulse raiser warms muscles, stretches)
    • Rest
      • Rest allows muscle to repair damage and strengthen.
    • Diet
      • Carbohydrates replenish energy stores.
      • Protein helps muscle repair and growth.
    • Role
      • Muscles contract and lengthen to provide movement.
      • Define body shape, Maintain posture.
      • Work voluntarily: Conscious control
      • Work involuntarily: On their own.

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