What is the term for a sudden burst of power during physical activity?

The term that best describes a sudden burst of power during physical activity is "explosive power." This concept refers to the ability to exert maximal force in the shortest amount of time, which is crucial in various sports and physical activities that require quick and forceful movements. Explosive power involves a combination of strength and speed, allowing an athlete to perform actions like sprinting, jumping, or throwing with high intensity.

While "explosive strength" focuses specifically on the ability to generate force rapidly, it does not encompass the speed component as effectively as explosive power. "Explosive endurance" might imply maintaining power over a longer period, which is not relevant to the idea of a sudden burst. "Explosive technique" would pertain more to the proficiency in performing a specific movement explosively rather than the power aspect itself. Thus, explosive power is the most accurate term for describing that sudden and intense effort in physical activity.