Explain the difference between isotonic and isometric muscle contractions with examples.

• A. Isometric involves movement with joint angle change; isotonic involves no length change.
• B. Isotonic involves movement with joint angle change (Concentric/Eccentric phases), isometric involves contraction without length change.
• C. Both are identical.
• D. Isometric contractions require moving a weight through a range of motion.

Answer: (B)