Which type of stretching is typically used as part of a warm-up to increase joint flexibility?

• A. Ballistic stretching
• B. Static stretching
• C. Dynamic stretching
• D. Isometric stretching

Answer: (C)

Dynamic stretching is used in a warm-up because it combines movement with a full range of motion, waking up the neuromuscular system and increasing muscle temperature while the joints move through their functional ranges. This helps improve joint flexibility in a way that matches the demands of activity, without reducing immediate performance.

Static stretching, while it can improve flexibility, is typically reserved for after activity because holding a stretch can temporarily weaken muscles and reduce power if done before exercise. Ballistic stretching involves bouncing and can increase injury risk, making it unsuitable for a warm-up. Isometric stretching uses a held contraction without movement, which isn’t as effective for preparing joints for dynamic activity and is not as functional for warm-ups.