VCP 34 Revision Lecture Notes

Introduction

• Presenter: Angelica
• AAR Notes founded in 2007 to support VC students.
• Focus shifted to online lectures post-COVID.
• Resources: Study notes, videos, newsletters, ATAR calculator, articles, past student tips.
• Angelica's background: Graduated in 2019, Biomedical Science graduate, studying medicine.

Lecture Objectives

• Cover Unit 3 topics: Movement skills, coaching practices, feedback, biomechanics, energy systems, and acute responses.

ATP and Energy Systems

• ATP (Adenosine Triphosphate): Energy currency of the cell.
• Energy Systems:
  • ATP-PC System
  • Anaerobic Glycolysis System
  • Aerobic System

ATP-PC System

• Uses phosphocreatine (PC) to convert ADP back to ATP.
• Quick energy release, lasts 10-15 seconds.
• Used during high-intensity activities like sprinting.

Anaerobic Glycolysis System

• Breaks down carbohydrates (glycogen to glucose) without oxygen.
• Produces lactic acid and hydrogen ions causing muscle fatigue.
• Dominant in activities lasting up to 60 seconds at high intensity.

Aerobic System

• Uses oxygen to break down carbohydrates and fats.
• Produces more ATP, slower rate, less fatigue.
• Suitable for lower intensity, longer duration activities.

Fuels for Energy Systems

• Chemical Fuel: Phosphocreatine.
• Food Fuels: Carbohydrates (glycogen), fats (triglycerides), proteins (rarely used).

Fatigue and Recovery

• Causes of Fatigue:
  • Energy system fuel depletion.
  • Metabolic by-products (hydrogen ions) accumulation.
  • Elevated body temperature.
• Recovery Methods:
  • Passive recovery for ATP-PC system.
  • Active recovery for anaerobic glycolysis and aerobic systems.

Acute Responses to Exercise

• Respiratory Responses:

  • Increased respiratory rate.
  • Increased tidal volume.
  • Increased ventilation.
  • Increased pulmonary diffusion.

• Cardiovascular Responses:

  • Increased heart rate and stroke volume.
  • Increased cardiac output.
  • Increased blood pressure.
  • Increased venous return and AV02 difference.
  • Blood redistribution to working muscles.

• Muscular Responses:

  • Increased motor unit recruitment.
  • Increased muscle temperature.
  • Increased by-products production.
  • Decreased energy substrate levels.

Study Tips

• Utilize VCAA past exams and reports.
• Engage in active study techniques (flashcards, practice questions).
• Consider using online forums for additional support and explanations.
• Aim for quality study sessions over quantity.
• Completing approximately 20 past exams can solidify exam preparedness.

Conclusion

• Encourages use of online resources and forums.
• Stay proactive in seeking clarification and practicing problem areas.
• Good luck with VC studies!