Unit 1.2.4
- 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.
- Two types of muscle contraction:
- 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.
- Immediate effects of exercise
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