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The Muscular System (Muscle Types (Cardiac Muscles (Found in the heart,…

- - - - Useful to
        
        Useful for long-distance performers such as marathon runners
      - Application to an athlete
        
        The dense myoglobin content in the muscles means type I muscle fibres can store more oxygen for use during aerobic respiration.
        
        This means they don't fatigue so easily and are especially suited to endurance suited to endurance-based athletes.
        
        However, they don't enable quick, powerful contractions, so the runner may not be a quick sprint finisher.
  - - - Useful to
        
        Useful for games players who use both aerobic and anaerobic respiration
      - Application to an athlete
        
        Type IIa muscle fibres have high density of myoglobin for aerobic respiration; however, they can also use anaerobic respiration and can produce fast contraction.
        
        This is beneficial for a footballer who will need to go through intervals of high-intensity sprints to the ball and lower-intensity jogging for the duration of 90 minutes.
  - - - Useful to
        
        Useful for explosive events such as weightlifting and sprinting
      - Application to an athlete
        
        These have a low myoglobin and mitochondria content, and have less oxygen stores, so they use anaerobic respiration.
        
        This results in fast, powerful contractions, great for sprinters, but fatigue quickly due to lack of oxygen.
- - - - Movement - Flexion
        
        Agonist - Hip flexors
        
        Antagonist - Gluteus maximus
      - Movement - Extention
        
        Agonist - Gluteus maximus
        
        Antagonist - Hip flexors
    - - Movement - Flexion
        
        Agonist - Hamstrings
        
        Antagonist - Qaudriceps
      - Movement - Extension
        
        Agonist - Qaudriceps
        
        Antagonist - Hamstrings
    - - Movement - Plantar flexion
        
        Agonist - Gastrocnemius
        
        Antagonist - Tibialis anterior
      - Movement - Dorsiflexion
        
        Agonist - Tibialis anterior
        
        Antagonist - Gastrocnemius