Which statement most accurately distinguishes dynamic stretching from static stretching?

• A. Dynamic stretching involves holding a position for a period.
• B. Static stretching involves moving joints through ranges of motion.
• C. Dynamic stretching involves moving joints through ranges of motion.
• D. Static stretching is used to prepare the body for activity.

Answer: (C)

The key idea here is whether the stretch involves moving during the action or simply holding a stretch. Dynamic stretching uses active movement of the joints through their full range of motion with controlled momentum, usually in a warm-up to raise muscle temperature and blood flow and to mimic the movements of the upcoming activity. This means you’re actively moving, not staying still, and the range of motion is being increased gradually in a fluid sequence. In contrast, static stretching involves lengthening a muscle and holding that position for a period of time, which is typically better suited for cooldown or flexibility work after exercise. Because of that, saying that dynamic stretching involves moving joints through ranges of motion correctly identifies the defining difference. The statement that dynamic stretching involves holding a position would describe static stretching, while saying static involves moving through ranges of motion is the opposite of what static stretching is. And static stretching is not usually used to prepare the body for activity, since it won’t raise heart rate or activate the nervous system in the way dynamic moves do.