Lever systems

• Describe the three classes of lever systems within the human body. • Identify first-class levers (e.g., at the neck), second-class levers (e.g., at the ankle), and third-class levers (e.g., at the elbow). • Define the concept of mechanical advantage and disadvantage in biomechanical lever systems. • Apply knowledge of lever systems and mechanical advantage to optimize performance in physical activity and sport.