Neuromuscular System

• Slow oxidative (Type 1)

  • SLOW contraction speed
  • LOW force of contraction
  • HIGH fatigue resistance
  • HIGH aerobic capacity
  • LOW anaerobic capacity
• Fast Oxidative Glycolytic (Type 2A)

  • FAST contraction speed
  • HIGH force of contraction
  • MODERATE fatigue resistance
  • MODERATE aerobic capacity
  • MODERATE anaerobic capacity
• Fast Glycolytic (Type 2B/X)

  • FAST contraction speed
  • HIGH force of contraction
  • LOW fatigue resistance
  • LOW aerobic capacity
  • HIGH anaerobic capacity
• Slow Oxidative (Type 1)

  • HIGH myoglobin content
  • LOW PC stores
  • HIGH mitochondrial density
  • HIGH capillary density
  • SMALL neurone size
  • FEW fibres per neuron
• Fast Oxidative Glycolytic (Type 2 A)

  • MODERATE myoglobin content
  • HIGH PC stores
  • MODERATE mitochondrial density
  • HIGH capillary density
  • LARGE neurone size
  • MANY fibres per neuron
• Fast Glycolytic (Type 2B/X)

  • LOW myoglobin content
  • HIGH PC stores
  • LOW mitochondrial density
  • LOW capillary density
  • LARGE neurone size
  • MANY fibres per neuron
• What does the Sympathetic Nervous System do?

  • Increases HR
  • Increases frequency of breathing
  • Increases breathing depth
  • Releases adrenaline
  • Muscles contract